WO2011022870A1

WO2011022870A1 - Ballast control apparatus and ballast apparatus configured for high intensity gas discharge lamp

Info

Publication number: WO2011022870A1
Application number: PCT/CN2009/073454
Authority: WO
Inventors: 王绿沙
Original assignee: Wang Lvsha
Priority date: 2009-08-24
Filing date: 2009-08-24
Publication date: 2011-03-03
Also published as: WO2011022937A1

Abstract

A ballast control apparatus configured for an inductance ballast of a high intensity gas discharge lamp (HID) and a ballast apparatus including the ballast control apparatus are provided. The ballast control apparatus includes an energy conversion inductance and an energy conversion capacitor. The energy conversion inductance and the energy conversion capacitor form a T-type network with the inductance ballast or a ballast inductance. The energy conversion capacitor generates a bootstrap boost effect adapting to the HID, meets the especial demands of HID boost firing startup and repeating firing startup, and restrains cathode sputtering and rectification effect effectively. The ballast apparatus creates a new operation mode that a low inductive reactance ballast equipment adapts to a high impedance high intensity gas discharge lamp. The ballast apparatus can adjust equivalent capacitor value of the energy conversion capacitor using an energy conversion control module, and can control electric signal of the high intensity gas discharge lamp accurately, thereby can realize soft startup and time-section energy-saving light-regulating functions.

Description

Ballast control device and ballast device configured for high-intensity discharge lamps

Technical field

The invention relates to a ballast device configured for a gas discharge lamp, in particular to a principle and a method for reconstructing a ballast impedance and a lamp impedance ratio model of a high-intensity gas discharge lamp system; and relates to an existing high-intensity gas discharge lamp and More advanced ballast devices than electronic ballasts and controls for existing ballasts. Background technique

High Intensity Discharge Lamps, referred to as HID, include high pressure sodium lamps, metal halide lamps, mercury lamps, xenon lamps, electrodeless lamps, etc. Among them, high-pressure sodium lamps and metal halide lamps are high-tech and mainstream products that have developed rapidly in recent years. The invention mainly relates to a high pressure sodium lamp, a metal halide lamp and a high pressure mercury lamp. HID is widely used in urban road lighting, economic development zones, ports, shopping malls, factories, streets, schools, car headlights, etc. Lighting and agriculture, medicine and many aspects. Taking China as an example, the amount of HID used accounts for more than 55% of the total electricity consumption in the country, and the market demand is growing at a rate of more than 10%. HID is also the main source of illumination for countries around the world. For this reason, the long-term research on HID high-power electronic ballasts and the research on HID light sources have become major technical issues and key technical fields for the research and development of human resources and financial resources in research institutes in the world, especially in developed countries.

The main interior of the HID is a discharge tube, that is, an arc tube, which is made of a transparent or translucent material, and has closed electrodes at both ends, and the discharge tube is filled with an inert gas and metal vapor. A basic form of prior art HID includes an inductive ballast in series with a discharge lamp and a trigger coupled in parallel across the high intensity gas discharge lamp, as shown in FIG. The volt-ampere characteristic of the gas discharge is negative and the resistance can be slightly changed. This slight change trend eventually develops to a short circuit, that is, the current is infinite until the discharge tube is burned, and the ballast acts as a ballast. The HID discharge illuminating requires a high-voltage breakdown condition, that is, an ignition voltage condition, and the instantaneous switching action of the trigger causes a self-induced electromotive force of 1 - 5 kV at the end of the ballast coil to be applied to both ends of the discharge tube. This voltage is called ignition. Voltage, which causes the free electrons of the electrode to obtain sufficient kinetic energy to strike the gas atom and rapidly form avalanche ionization to form sufficient stable discharge luminescence; at the beginning of the ignition success, the HID is short-circuited, and the ballast is required to limit the startup short-circuit current; In the alternating current supply, the two electrodes of the discharge tube are alternately converted into an anode and a cathode, and the current is zero or approximately zero during a period of time at the junction of the negative half cycle of the current and the vicinity of the current. Extinguish the time text, as shown in Figure 6, to reduce the extinguishing time or prevent complete flameout, the ballast is required to provide the lamp with a voltage higher than the power supply, that is, repeat the ignition voltage. Therefore, the ballast functions to generate ignition high voltage, limit startup short circuit current, and heavy The role of re-ignition.

The ballast has several types of inductive, inductive and capacitive series and electronic type. Inductive ballasts are one type of electromagnetic ballasts and are widely used. The main defects of the ballast ballast are low power factor and large loss. The electric ballast is also essentially an inductive ballast. The essential difference is the high frequency inductance of tens of kHz. Therefore, the volume is much smaller than the magnetic ballast, so the L loss is much smaller. Its power factor is usually 0.90. the above. The high-power electronic ballast's own loss has no obvious advantage compared with the energy-saving ballast. The rated loss of the 250W high-pressure sodium lamp energy-saving magnetic ballast is reduced to 10%; and it is used as the electron of the fluorescent lamp as a low-pressure gas discharge lamp. Ballasts can increase light efficiency by 10%-15%, but electronic ballasts for HID can only increase light efficiency by 2%^%; the ballast ballast material recovery rate can reach more than 95%. More importantly, HID electronic ballast technology is much more complicated than fluorescent electronic ballasts. Acoustic resonance, PFC harmonics, startup reliability, anti-interference and other difficult problems are still disturbing human power HID electronic ballasts幵Common issues of development and promotion. Therefore, more powerful power ballasts are used for human power HIDs, especially electronic ballasts rarely used above 100W.

There are still many mutually restricting factors between the lamp and the ballast used in the prior art for the HID system, thereby greatly limiting the large improvement of the HID light efficiency and life, and the outstanding performance is as follows -

Sputtering and rectification effect

When HID is ignited, there is a transition from a glow discharge of a small current to an arc discharge of a large current, in which a cathode sputtering and rectification effect is generated. The cathode sputtering means that some of the metal particles are splashed from the surface of the cathode and adhered to the parts near the cathode and the glass shell due to the strong bombardment of the cathode by positive ions or the like, causing the lower part of the tube to become black, affecting the luminous efficiency, and causing the electrode. Loss; the most severe sputtering occurs during the short transition from the glow discharge to the high current arc discharge. If the ignition voltage is not high enough, the electric field energy is insufficient, the glow discharge process is prolonged; and the ignition voltage energy is too large. The positive particles will have a higher acceleration on the cathode bombardment, making the sputtering more serious. The rectification effect refers to a rectification effect in which the lamp current is not equal in the positive and negative half cycles during the ignition start process of the rolling gas discharge lamp, and the rectification effect of the severe severe distortion occurs, and the waveform thereof is as shown in FIG. The effect is caused by the unbalanced ability of the two electrodes to emit electrons due to the loss of the enthalpy, which shows that the current suddenly fluctuates and violently impacts, and finally tends to slow down with time. The cathode sputtering and rectification effects are important factors affecting the luminous efficiency and lifetime. This is related to the excessive loss of the electrode caused by the HID ignition start mode, and the excessive voltage causes the excessive heat and the ignition to initiate the rectification effect. There is a direct relationship between the increase. Therefore, the cathode sputtering and rectification effects present an attempt to generate an adaptive S-optimized ignition soft-start and re-ignition voltage for the ballast, but prior art ballasts or auxiliary electrodes are not sufficient to satisfy this claim.

2. The effect of the prior art ballast on the lamp voltage greatly limits the improvement of light efficiency and life.

In addition, for inductive ballasts, reducing the inductive reactance reduces active losses and increases the power factor of the power supply; On the other hand, for the discharge tube, by appropriately increasing the inert gas pressure, the number of electrons emitted by the electrode collides with the gas atoms to increase the radiation light energy and the luminous efficiency. At the same time, the length of the positive column region between the electrodes can be increased. The column area impedance is increased to reduce lamp current, reduce electrode loss and heat loss, resulting in improved light efficiency and lifetime. However, these measures will increase the barrier between the electrodes, and thus, in order to obtain a higher ignition voltage, it is necessary to increase the inductance inductance; therefore, there is a mutual constraint between the reduction of the ballast reactance and the improvement of the ignition voltage.

3. Effect of voltage fluctuation on rectification effect and power

Existing theories and experiments suggest that the voltage is higher than 10% and has no effect on the life of the high pressure sodium lamp. This conclusion is a mistake. The experimental results of the old high-pressure sodium lamp of the present invention show that if a significant rectification effect occurs at a rated voltage of 3⁄4, a voltage increase of 10% causes a rectification effect to be significantly increased, and sputtering is intensified; and a voltage of 10% is rectified after ignition. The effect is significantly reduced. The startup quickly entered a steady state. The voltage adopts the HID of the magnetic ballast, when the power supply voltage rises by 5%, the lamp power increases by 12%; when the power supply voltage rises by 10%, the lamp power will increase by more than 25%, and the heat of the ballast increases sharply. An important reason for the impact of HID life.

For the road lighting system, the sub-node auto-decompression transformer is used to centrally adjust the voltage control at the power supply point to solve the problem of high voltage and achieve step-down energy saving. However, the drawback of this centralized control technology is that the reliability and safety are relatively poor, and the long-distance line control will cause the voltage imbalance between the front and rear sections of the street lamp, and even some of the taillights will be extinguished, especially for metal halide lamps and mercury. The light is not suitable.

4. Series Inductor Dimming Control

In order to adapt to energy conservation, the prior art has begun to adopt one or more inductive timing adjustment lamp power methods in series. As shown in Figure 8, for this type of circuit to obtain multi-level or high-precision voltage and power control, multiple independent coils or quadrature split winding inductors are required, otherwise the switching transient power-off process will cause instability. However, it is very difficult to manufacture multi-winding orthogonal split inductors, and the volume is large, the inductance is difficult to control, and it is unsafe to lead out multiple series main lines, which will reduce reliability; and the use of a single segment control will generate power. Large jumps have a serious impact on lamp life, which is not technically desirable. Another significant drawback of this circuit is that the power supply factor is progressively decreasing and the loss ratio is increasing.

5. The contradiction between reactive power compensation and EMI

The inductance ballast power factor of the gas discharge lamp is relatively low. For example, the high-power sodium lamp 3⁄4 source power factor is only 0.4~0.43, so the reactive power compensation is very heavy. However, compensation generates a large amount of higher harmonics, which increase the loss of each component of the entire line, including transformers and wires, and seriously pollute the grid. The technology now eliminates these harmonics by means of an active power filter. However, the current mature active power filter products are very expensive, and are rarely used in low-voltage power distribution in China, and the poor quality active filters will increase harmonics. Summary of the invention

The technical problem to be solved by the invention is to establish a new mode of high-intensity gas discharge lamp HID for improving tube pressure, reducing inductance and voltage regulation operation, organically realizing overall improvement of overall performance such as HID loss, light efficiency, life and power factor.自适应Using adaptive boost ignition method to solve the problem of ignition and re-ignition difficulties encountered by traditional HID charging high pressure, adopt soft start method to reduce the rectification effect of high-pressure sodium lamp; realize automatic control of HID voltage regulation operation; realize HID preset Multi-level constant brightness energy-saving operation during the time period, and the power adjustment range of the high-pressure sodium lamp reaches a reasonable maximum of 45%; the HID rated power factor correction PFC reaches 0.95, and meets EMI compatibility requirements.

The present invention provides a ballast control device configured for an inductive ballast adapted to a high intensity gas discharge lamp, improving an existing inductive ballast to produce an adaptive optimized ignition voltage and a repetitive ignition voltage; The ballast device configured for the high-intensity discharge lamp not only generates adaptive optimization of the ignition voltage and the repeated ignition voltage, but also provides the possibility of increasing the inert gas pressure of the high-intensity discharge lamp and increasing the length of the positive column between the electrodes; At the same time, based on the above device, a method for realizing soft start of high-intensity gas discharge lamp and a method for energy-saving dimming by time division are proposed.

The technical problem of the present invention can be achieved by adopting the following technical solutions:

Designing and manufacturing a ballast control device for an inductive ballast configuration adapted to a high-intensity gas discharge lamp, electrically connected between a series branch of a high-intensity gas discharge lamp and an inductive ballast and a power supply A high-intensity gas discharge lamp is also provided with a trigger in parallel at both ends. In particular, the ballast control device includes an energy conversion inductor, an energy conversion capacitor, a first output electrically coupled to the inductive ballast, a second output electrically coupled to the high intensity gas discharge lamp, and a respective a two-input terminal electrically connected to an output terminal of the power supply; one end of the energy conversion inductor, one end of the energy conversion capacitor, and a first output end of the ballast control device are electrically connected to the first node, the energy conversion inductor The other end is electrically coupled to the first input of the ballast control device, and the other end of the energy conversion capacitor, the second input and the second output of the ballast control device are electrically coupled to the second node.

The technical problem of the present invention can also be achieved by adopting the following technical solutions:

A ballast device for designing a high-intensity gas discharge lamp with S is electrically connected between the high-intensity gas discharge lamp and a power supply, and a trigger is connected in parallel at both ends of the high-intensity discharge lamp. In particular, the ballast device includes a ballast inductor, a ballast control device, two output terminals respectively electrically connected to both ends of the xenon intensity gas discharge lamp, and an input terminal electrically connected to an output terminal of the power supply source; The ballast control device includes an energy conversion inductor and an energy conversion capacitor. One end of each of the ballast inductor, the energy conversion inductor and the energy conversion capacitor is connected to the first node, and the other end of the ballast inductor is electrically connected to the first output of the ballast device. End, the other end of the energy conversion inductor is electrically connected to the first input end of the ballast device, the other end of the energy conversion capacitor, the second output end of the ballast device, and the second input end are electrically Connected to the second node.

The ballast control device and the ballast device further include an energy conversion control module that controls the adjustment of the capacitance value of the energy conversion capacitor based on an electrical signal collected from the power supply and the first node.

The energy conversion capacitor includes n capacitors connected in parallel between the first node and the second node, and n controlled switching devices connected in series in parallel branches of the capacitors for controlling the respective branches to be turned on and off The energy conversion control module includes a signal acquisition sub-module, a signal comparison analysis sub-module, and a drive signal sub-module. The signal acquisition sub-module collects an electrical signal from the power supply and the first node and transmits the electrical signal to the signal comparison analysis sub-module; the signal comparison analysis sub-module compares and analyzes the collected electrical signal And the control signal for closing or breaking the parallel branch of each capacitor is sent to the driving signal sub-module according to the timing; the driving signal sub-module sends a closed or disconnected driving to the corresponding controlled switching device according to the control signal. a signal to thereby adjust an equivalent capacitance value of the energy conversion capacitor.

The signal acquisition submodule includes a signal detection submodule for collecting a voltage and a current signal from the power supply and the first node, and a harmonic detection submodule for acquiring a harmonic signal from the first node; the signal comparison analyzer The module comprises a micro control unit and a comparator electrically connected to the micro control unit; the electrical signal collected by the signal acquisition submodule is input to the micro control unit and/or the comparator; the micro control unit is controlled by the timing output by signal analysis The controlled switching device can be a thyristor, a relay, or other semiconductor switching device.

A method of soft-starting a high-intensity discharge lamp, based on the above-described ballast control device, comprising an energy conversion inductor and an energy conversion capacitor electrically connected between the first node and the second node, in particular comprising the steps of:

A. setting an energy conversion control module and modifying the energy conversion capacitor, so that the energy conversion control module can adjust a capacitance value of the energy conversion capacitor according to an electrical signal collected from the power supply and the first node;

B. When the high-intensity gas discharge lamp is illuminated, the energy conversion control module determines the capacitance value of the energy conversion capacitor after the ignition of the high-intensity gas discharge lamp is successful according to the electrical signal collected from the power supply and the first node. Gradually increasing, thereby adjusting the voltage of the first node, so that the arc current of the high-intensity discharge lamp after the glow discharge is slowly increased to the steady-state operating current.

The step A includes the following sub-steps: Manufacturing the energy using n capacitors connected in parallel between the first node and the second node, and n controlled switching devices connected in series to control the switching of the respective branches in the parallel branch of each capacitor Conversion capacitor

A2. a signal acquisition submodule, a signal comparison analysis submodule, and a driving signal submodule are disposed in the energy conversion control module; the signal collection submodule collects an electric signal from the power supply and the first node, and the electric The signal is transmitted to the signal comparison analysis sub-module; the signal comparison analysis sub-module compares and analyzes the collected electrical signals, and sends the control signals of the parallel branches of the closed or broken capacitors to the driving signals according to the timing. a sub-module; the driving signal sub-module sends a closed or broken driving signal to the corresponding controlled switching device according to the control signal;

Then, the step B includes the following steps:

B1. When the high-intensity discharge lamp is illuminated, the signal acquisition sub-module collects an electrical signal from the power supply and the first node and transmits the electrical signal to the signal comparison analysis sub-module;

B2. The signal comparison analysis sub-module determines that the high-intensity gas discharge lamp is successfully ignited according to the electric signal collected in step B1, and issues a driving letter for sequentially closing the controlled switching device to the driving signal sub-module according to a fixed time interval;

B3. The driving signal sub-module controls each of the controlled switching devices to be sequentially closed, so that the parallel branches of the capacitors are sequentially turned on, thereby gradually increasing the equivalent capacitance between the first node and the second node. The capacitance value of the energy conversion capacitor is gradually increased.

Implementing a method for adjusting the brightness of a high-intensity gas discharge lamp by a period of time, based on the above-described ballast control device, comprising an energy conversion inductor and an energy conversion capacitor electrically connected between the first node and the second node, in particular including the following steps :

A. setting an energy conversion control module and modifying the energy conversion capacitor, such that the energy conversion control module can eliminate the capacitance value of the energy conversion container according to an electrical signal collected from the power supply and the node.

B. The energy conversion control module adjusts a capacitance value of the energy conversion capacitor according to a preset time period, and makes a voltage value of the first node constant in a respective time period according to an electrical signal collected from the first node. A voltage value is set to adjust the voltage across the high-intensity discharge lamp such that the high-intensity discharge lamp has a corresponding luminance during each period of time.

The step A includes the following sub-steps:

A1. Using n capacitors connected in parallel between the first node and the second node, and connecting in series to each capacitor Manufacturing the energy conversion capacitor in n controlled switching devices of the parallel branch for controlling the switching of the respective branches; A2. setting a signal acquisition submodule, a signal comparison analysis submodule, and The signal acquisition sub-module collects an electrical signal from the power supply and the first node and transmits the electrical signal to the signal comparison analysis sub-module; the signal comparison analysis sub-module collects the generated electricity The signals are compared and analyzed, and the control signals for closing or disconnecting the parallel branches of the capacitors are sequentially sent to the driving signal sub-modules; the driving signal sub-modules are issued to the corresponding controlled switching devices according to the control signals. Or a broken drive signal;

Then, the step B includes the following sub-steps:

B1. At a start time of the preset time period, the signal acquisition sub-module collects the electrical signal from the first node and transmits the electrical signal to the signal comparison analysis sub-module;

B2. The signal comparison analysis sub-module compares the electrical signal collected to the first node with a voltage value of the preset first node in the time period, and determines, between the first node and the second node, according to the comparison situation. The equivalent capacitance value should be set, and send a control signal to the driving signal sub-module that the parallel branch of each capacitor needs to be turned on or off, that is, the respective driving signals of the controlled switching device;

B3. The driving signal sub-module controls each of the controlled switching devices to be closed or broken according to the driving signal, so that the parallel branches of the respective capacitors are turned on or off, thereby adjusting the first node and the second node. The equivalent capacitance value between the nodes is such that the energy conversion capacitor equivalent capacitance value reaches the set equivalent capacitance value described in step B2.

Compared with the prior art, the technical effects of the "ballast control device and ballast device for high-intensity gas discharge lamps" of the present invention are as follows:

1. The ballast device establishes a new HID mode of high-intensity gas discharge lamp for suppressing discharge tube pressure, reducing inductance and stabilizing operation of high-intensity gas discharge lamp. The energy conversion inductor and the energy conversion capacitor greatly increase the ignition voltage even in the case where the inductive reactance of the magnetic ballast and the ballast inductance is reduced, so that the ballast device can be used not only for the prior art high-intensity gas The discharge lamp can also be used to overcome the HID ballast pair by increasing the inert gas pressure and/or increasing the length of the positive column between the electrodes to obtain high-intensity, low-electrode loss high-intensity gas discharge lamps with high impedance. Developed and manufactured the high-impedance high-intensity discharge lamp to form a new high-intensity discharge lamp HID mode.

2. The energy conversion inductor mainly functions as an energy conversion, the energy conversion capacitor provides a condition for energy conversion, and the energy release of the energy conversion capacitor does not consume electrical energy, but a small variable can cause a voltage of the S conversion inductor. Large changes occur, which makes it easy and reliable to change the power distribution to high-intensity gas discharges. The voltage of the lamp HID realizes the effective control of the functional quantity of HID, and produces a bootstrap boosting effect suitable for HID, which satisfies the special requirements of HID boost ignition start and repeated ignition start, effectively suppressing the cathode splash Shot and rectification effect;

3. The energy conversion control module can control the energy conversion capacitor according to the power supply and the electrical signal of the first node, adjust the capacitance value, gradually increase the starting voltage of the high-intensity discharge lamp, and realize the high-intensity discharge lamp. Soft start

4. By adjusting the capacitance value of the energy conversion capacitor, the voltage at both ends of the high-intensity gas discharge lamp can be accurately and efficiently adjusted, and the automatic operation of the voltage regulation operation and the multi-level constant brightness energy-saving operation of the preset multi-time period can be realized;

5. The energy conversion capacitor completes the reactive power compensation and filtering function, so that the rated power factor correction of the high-intensity gas discharge lamp reaches 0.95, which satisfies the EMI electromagnetic compatibility requirements and fills the technical blank. DRAWINGS

1 is a schematic view of an electrical principle of a first embodiment of the present invention;

2 is a schematic diagram of an electrical principle of a second embodiment of the present invention;

3 is a schematic diagram of an electrical principle of a third embodiment of the present invention;

4 is a schematic diagram of functional modules of a third embodiment of the present invention;

Figure 5 is a schematic view of a prior art high intensity gas discharge lamp illumination system;

6 is a schematic waveform diagram of a prior art high-intensity gas discharge lamp;

7 is a schematic diagram of a rectification effect waveform of a prior art high-intensity gas discharge lamp;

FIG. 8 is a schematic diagram of an electrical principle of a multi-period dimming control using a preset power ballast in the prior art. Detailed ways

The following is a detailed description of the embodiments shown in the drawings.

A first embodiment of the present invention, as shown in FIG. 1, proposes an optimization scheme implemented on the basis of a prior art magnetic ballast, that is, an inductive ballast L configuration for a high-intensity gas discharge lamp The ballast control device 30 is electrically connected between the high-intensity gas discharge lamp 10 and the series branch of the ballast ballast L and the power supply V _N , and the thirteen intensity gas discharge lamp 10 is also connected in parallel with a trigger 20. The ballast control device 30 includes an energy conversion inductor L1, an energy conversion capacitor 50, a first output terminal OUT1 electrically connected to the inductor ballast L, and a second output terminal electrically connected to the high intensity gas discharge lamp 10. OUT2 and two input terminals IN1 and IN2 respectively electrically connected to an output terminal of the power supply V _N ; one end of the energy conversion inductor L1 and the energy conversion capacitor 50 One end is electrically connected to the first output terminal OUT1 of the ballast control device 30 to the first node a, and the other end of the energy conversion inductor L1 is electrically connected to the first input terminal IN1 of the ballast control device 30, The other end of the energy conversion capacitor 50, the second input terminal IN2 of the ballast control device 30, and the second output terminal OUT2 are electrically connected to the second node b.

The magnetic ballast L, the energy conversion inductor L1 and the energy conversion capacitor 50 form a T-shaped network, the energy conversion inductor L1 functions as an energy conversion, and the energy conversion capacitor 50 provides a condition for energy conversion. The energy conversion capacitor 50 generates a bootstrap boosting effect adapted to the high intensity gas discharge lamp HID 10, which satisfies the special requirement of the boosting ignition start and the repeated ignition start of the high intensity gas discharge lamp 10, and effectively suppresses cathode sputtering. And ballast effects.

A second embodiment of the present invention, as shown in FIG. 2, proposes a new ballast device for a high-intensity discharge lamp, that is, a ballast device configured for a high-intensity discharge lamp, electrically connected Between the high-intensity discharge lamp 10 and the power supply V _N , a trigger 20 is further connected in parallel across the high-intensity discharge lamp 10 . In particular, the ballast device 40 includes a ballast inductor L2, a ballast control device 30, two output terminals OUT3, OUT4 electrically connected to both ends of the high-intensity discharge lamp 10, respectively, and a power supply V _N The input terminals are electrically connected to the input terminals IN3, IN4; the ballast control device 30 includes an energy conversion inductor L1 and an energy conversion capacitor 50; and one end of each of the ballast inductor L2, the energy conversion inductor L1 and the energy conversion capacitor 50 is electrically Connected to the first node a, the other end F of the ballast inductor L2 is connected to the first output terminal OUT3 of the ballast device 40, and the other end of the energy conversion inductor L1 is electrically connected to the ballast device. The first input terminal IN3 of 40, the other end of the energy conversion capacitor 50, the second output terminal OUT4 of the ballast device 40 and the second input terminal IN4 are electrically connected to the second node b. The ballast inductor L2 The inductance value should be greater than the inductance value of the energy conversion inductor L1.

The second embodiment is substantially the same as the first embodiment, except that the first embodiment is an optimized solution for the prior art 髙 intensity gas discharge lamp 10 and its magnetic ballast L, that is, no replacement The magnetic ballast! ^. The ballast device 40 of the second embodiment completely replaces the prior art inductive ballast L. The advantage is that the ballast inductor L2 and the energy conversion inductor L1 can be manufactured in one body, and in order to minimize the active consumption on the ballast inductor L2, the inductive reactance of the ballast inductor L2 can be reduced as much as possible. Due to the presence of the energy conversion capacitor 50, even in the case where the inductive reactance of the ballast inductance L2 is reduced, the voltage can be ignited while the energy conversion capacitor 50 produces a high-intensity discharge lamp HID 10 The bootstrap boosting effect satisfies the special requirements of the booster ignition start and the repeated ignition start of the high-intensity discharge lamp 10, effectively suppressing cathode sputtering and ballasting effects. However, in the first embodiment, the inductive reactance of the inductive ballast L cannot be reduced, and the first embodiment is inferior to the second implementation in reducing the active loss on the inductive ballast L. example. Therefore, the technical effect of the second embodiment will be superior to the first embodiment.

The ballast device 40 provides a new mode of operation for a high intensity gas discharge lamp. As mentioned above, prior art magnetic ballasts cannot be upgraded to higher ignition high voltages, thus limiting the development trend of high impedance high intensity gas discharge lamps. The high impedance of the high intensity gas discharge lamp can be achieved by increasing the charge pressure of the inert gas and/or increasing the length of the positive column between the electrodes. The high-impedance high-intensity discharge lamp improves luminous efficiency and reduces electrode loss. Therefore, the ballast device 40 creates a new operation mode of the low-sensitivity anti-rectifier device for adapting the high-impedance high-intensity gas discharge lamp to reduce the active loss of the ballast and improve the luminous efficiency of the high-intensity discharge lamp. .

Taking the second embodiment as an example, the energy of the energy conversion inductor L1 and the ballast inductor L2 is given in four ways: all provided by the power supply VN, simultaneously supplied by the power supply VN and the energy conversion capacitor 50, all by energy The transform capacitor 50 provides a surplus reference to the energy conversion capacitor 50. These four different energy setting methods cause the supply voltage of the ballast inductor L2 to change, that is, the change of the Va point voltage Va shown in Fig. 2. Because the active current vector differs from the inductive reactance vector, the active current does not work on the inductor, so the energy conversion Ftl senses on L1.

2

The voltage drop is only related to the reactive current flowing through it. By changing the ratio of the power supply to the ballast 3⁄4 sense L2, the power consumption of the energy conversion inductor L1 can be significantly changed and converted into a high-intensity gas discharge lamp 10 with a significant change in the amount of function for control purposes. The effect of this energy converter can be measured by the voltage Va. The relationship between Va and the energy conversion inductor L1 and the equivalent capacitance C of the energy conversion capacitor 50 and the relationship between Va and the lamp voltage VI, the lamp current II and the lamp power Pla are determined by the following five equations:

Va=V _N — Il .jcoU

I _c - Va-jroC,

Vl= Va— Il-jcoL ₂ ,

Ll ² = Va ² / { ( oL ₂ ) ² +Rla ² }

Pla= Il ² -Rla PFla = Va ² / { ( oL ₂ ) ² +Rla ² } - Rla-PFla

Where V _N is for the supply voltage, Va is the supply voltage of the ballast inductor L2, VI is the lamp voltage, II is the current flowing through the inductor L1, II is the lamp current, and l _c is the current released by the energy conversion capacitor 50. Pla is the active power of the lamp, Rla is the lamp resistance, and Pfla is the power factor of the lamp. In (1) (2) (3), V _N , Va, VI, II, 11,

Ic is a vector.

The variation of Va in four different energy given modes is as follows:

1 The energy conversion inductor and the 3⁄4 work current absorbed by the ballast inductor L _{2 are} all supplied by the power supply: at this time, the voltage drop of the energy conversion inductor L1 is '1'cocoL, the maximum, Va is the smallest; Va<V _N ; 2 The part of the reactive current of the ballast inductor L2 is given by the power supply ¥, and the other part of the mountain energy conversion capacitor 50 is given. At this time, the voltage drop Il'jcoLl on the energy conversion inductor L1 is due to the reactive power flowing through The current decreases and decreases, Va increases, Va < V _{N ;}

The reactive current of the ballast inductor L ₂ is all given by the energy conversion capacitor 50, and the reactive current of the energy conversion inductor is given by the power supply V _N , at which time Va is equal to the power supply voltage V _N minus IlcoLl, at this time due to self absorption The reactive current is small, so Va is slightly smaller than V _{N ;}

3 The reactive currents of the energy conversion inductor L1 and the ballast inductor L2 are all given by the energy conversion capacitor 50, and I _c =I _u +Ic ILI is the current flowing through the energy conversion inductor L1, and 1 ₁₂ is the flow through the ballast inductor The current of L2, then Va = V _N ;

4 When the energy conversion capacitor 50 supplies excess reactive current, the energy conversion capacitor 50 feeds the power supply, AIC = I _C -ILI-IL2>0, at which time the phase of AK>jcoLl is opposite to the phase of the inductive current. Va = V _N ten! ^)!^ ^ .

The law that Va changes with I _c , that is, the law of change with the change of the equivalent capacitance C of the energy conversion capacitor 50 proves that the magnitude of the equivalent capacitance C of the adjustment energy conversion capacitor 50 enables Va to be greater than, equal to, and The grading adjustment is within a wide range of less than ¥;^, so that the 卨 intensity gas can be activated and operated in a wide range to achieve effective precise control.

Therefore, if the equivalent capacitance value C of the energy conversion capacitor 50 can be adjusted according to a certain timing and manner, the reactive power amount of the energy conversion capacitor 50 released to the inductor L2 can be adjusted, thereby realizing soft start, time-division energy-saving dimming, for example. And other functions.

According to a third embodiment of the present invention, as shown in FIG. 3, the ballast control device 30 further includes an energy conversion control module 60. The energy S: conversion control module 60 is configured to collect from the power supply V _N and the first node a. The electrical signal control adjusts the capacitance value of the energy conversion capacitor 50. The energy conversion control module 60 can be implemented by pure hardware or by a microprocessor supplemented by software. The microprocessor can be a microcontroller or a programmable logic device. The third embodiment of the present invention adopts the following specific circuit structure. As shown in FIG. 3, the energy conversion capacitor 50 includes n capacitors C1, ..., Cn connected in parallel between the first node a and the second node b. And n controlled switching devices K1 to Kn connected in parallel to each of the capacitors C1, ..., Cn for controlling the switching of the respective branches; the energy conversion control module 60 includes a signal acquisition sub-module 61, a signal The comparison analysis sub-module 62 and the drive signal sub-module 63 are combined. The signal acquisition sub-module 61 collects an electrical signal from the power supply V _N and the first node a and transmits the electrical signal to the signal comparison analysis sub-module 62; the signal comparison analysis sub-module 62 pairs the collected Electrical signals are compared and analyzed, and each power is turned off or disconnected The control signal of the parallel branch of the capacitor CI Cn is sent to the driving signal sub-module 63 in time series; the driving signal sub-module 63 sends a closed or broken driving signal to the corresponding controlled switching device K l Kn according to the control signal. Thereby adjusting the equivalent capacitance value of the energy conversion capacitor 50.

More specifically, the signal acquisition sub-module 61 includes a signal detection sub-module 611 that collects a voltage and a current signal from the power supply V _N and the first node a, and a harmonic that collects a harmonic signal from the first node a. The detection sub-module 612 includes a micro control unit 621 and a comparator 622 electrically connected to the micro control unit 621; the electrical signal collected by the signal acquisition sub-module 61 is input to the micro control unit 621 and / Or a comparator 622; the micro control unit 621 outputs the control signal in time series by signal analysis. In the third embodiment of the present invention, the controlled switching device K l Kn is a thyristor, and of course, a relay can also be implemented. In order to prevent a voltage overload between the first node a and the second node b from causing damage to the energy conversion capacitor 50, an overvoltage protection device TVS is electrically connected between the first node a and the second node b.

It is easily contemplated that the energy conversion control module 60 can also be applied to the energy conversion capacitor 50 of the first embodiment to effect an adjustment of the non-functional amount released to the energy conversion inductor L1 and the ballast inductor L2.

As shown in FIG. 4, the detection signal is obtained from the ballast device, and the harmonic limit function, the reactive power compensation function, the brightness control function, the stable voltage function, and the adaptive optimization ignition function are selected according to the result of the signal detection, and adaptive optimization is performed. After the ignition is successful, the soft start function is executed. The above various functions adjust the energy conversion capacitor 50 in the rectifier device through the energy conversion control module, thereby realizing the control of the ballast device and controlling the high intensity gas discharge lamp. The energy conversion control module 60 adjusts the equivalent capacitance value C of the energy conversion capacitor 50 according to the requirements of different functional modules according to a certain timing and manner, and then adjusts the reactive power amount released to the energy conversion inductor L1 and the ballast inductor L2. The energy release of the energy conversion capacitor 50 does not consume electrical energy, but a small variable can cause a large change in the voltage drop of the energy conversion inductor L1, thereby conveniently and reliably changing the voltage of the power supply to the high-intensity gas discharge Ftl lamp 10, The effective control of the functional quantity of the high-intensity discharge lamp 10 completes the tasks specified by the various functional modules, such as soft start and time-division energy-saving dimming.

The signal detected by the signal detecting sub-module 61 1 includes a power supply voltage V _N detection, voltage and current detection of the first node a. The harmonic detection sub-module 612 is configured to detect a harmonic signal of the first node a. The signals 111 detected by the two modules need to be implemented to determine the signals, and the signals are not necessarily signals that must be detected or all detected signals.

With the function of the energy conversion control module 60, the soft start of the high intensity gas discharge lamp 10 can be achieved. The present invention provides a method for soft-starting a high-intensity gas discharge lamp. The ballast control device 30 according to the above embodiments includes an energy conversion inductor L1 and is electrically connected between the first node a and the second node b. Energy conversion Capacitor 50. The method for soft-starting a high-intensity discharge lamp includes the following steps:

A. The energy conversion control module 60 is provided and the energy conversion capacitor 50 is modified to enable the energy conversion control module 60 to adjust the energy conversion capacitor 50 based on electrical signals collected from the power supply V _N and the first node a. Capacitance value;

B. When the high-intensity discharge lamp 10 is turned on, the energy conversion control module 60 determines that the high-intensity discharge lamp 10 is successfully ignited based on the electrical signal collected from the power supply _[ ^ and the first node a, The capacitance value of the energy conversion capacitor 50 is gradually increased to adjust the voltage of the first node a, so that the arc current of the high-intensity discharge lamp 10 after the glow discharge is slowly increased to the steady-state operating current.

The energy conversion control module 60 is set up in step A and the energy conversion capacitor 50 is modified. The electrical structure of the third embodiment can be used, but it is not limited thereto, because step A can be implemented as described above. The devices of the functions of the energy conversion control module 60 and the energy conversion capacitor 50 are in a variety of circuit forms, and the present invention encompasses any simple hardware circuit and software hardware hardware that can implement the functions of the energy conversion control module 60 and the energy conversion capacitor 50. Therefore, taking the third embodiment as an example, the step A includes the following sub-steps: A1. Using n capacitors C1, ..., Cn connected in parallel between the first node a and the second node b, and The energy conversion capacitors 50 are fabricated in series by n controlled switching devices K1, ..., η of the parallel branches of the respective capacitors CI Cn for controlling the switching of the respective branches;

Α2. The energy conversion control module 60 is provided with a signal acquisition sub-module 61, a signal comparison analysis sub-module 62 and a drive signal sub-module 63; the signal acquisition sub-module 61 is collected from the power supply V _N and the first node a The electrical signal is transmitted to the signal comparison analysis sub-module 62; the signal comparison analysis sub-module 62 compares and analyzes the collected electrical signals, and closes or disconnects the parallel branch of each capacitor CI Cn The control signal is sent to the driving signal sub-module 63 in time series; the driving signal sub-module 63 sends a closed or open driving signal to the corresponding controlled switching device K1 Kn according to the control signal; then, the step B Including the following sub-steps:

B1. When the high-intensity discharge lamp 10 is illuminated, the signal acquisition sub-module 61 collects an electrical signal from the power supply and the first node a and transmits the electrical signal to the signal comparison analysis sub-module 62;

B2. The signal comparison analysis sub-module 62 determines, according to the electrical signal collected in step B1, that after the ignition of the 卨 intensity gas discharge lamp 10 is successful, the driving signal sub-module 63 is sequentially driven to drive the controlled switching device K1 Kn according to a fixed time interval. Signal

For the third embodiment, the micro control unit 621 issues an ignition reference voltage to the ignition comparator 622, and can be formed by comparing the power supply V _N and the first node a to collect the electrical signal with the reference voltage. The ignition is successful or the ignition is unsuccessful. When the determination that the ignition is unsuccessful occurs, the micro control unit 621 further determines whether the ignition is unsuccessful due to the ignition voltage being too low or the ignition is unsuccessful due to the ignition voltage being too high, based on the comparison result of the ignition comparator 622. If the ignition is unsuccessful due to the ignition voltage being too low, the energy conversion capacitor 50 is adjusted by the drive signal sub-module 63 to increase the ignition voltage; if the ignition is unsuccessful due to the excessive ignition voltage, the high-intensity discharge lamp 10 is judged. In the event of a fault, the energy conversion capacitor 50 needs to be opened by the drive signal sub-module 63 to protect the energy conversion capacitor 50. When it is judged that the ignition is successful, the equivalent capacitance value of the energy conversion capacitor 50 is not adjusted once, because the soft start means that the high-intensity discharge lamp 10 ignites from the glow to the arc discharge, and the power is supplied when the arc current starts to increase rapidly. The voltage drops immediately and then gradually rises. In order to achieve the effect of gradual recovery, it is necessary to adjust the equivalent capacitance value of the energy conversion capacitor 50 several times. Therefore, the signal comparison analysis sub-module 62 drives to the fixed time interval. The signal sub-module 63 issues a drive signal that sequentially closes the controlled switching device K1 Kn. Of course, not all parallel branches need to be closed, and the number of parallel branch closures and which parallel branch closures are controlled by the signal comparison analysis sub-module 62.

驱动3. The driving signal sub-module 63 controls each of the controlled switching devices K1 to Kn to be sequentially closed, so that the parallel branches of the capacitors CI Cn are sequentially turned on, thereby gradually increasing the first node a and the second node b. The equivalent capacitance value between the two gradually increases the capacitance of the energy conversion capacitor 50.

With the function of the energy conversion control module 60, it is also possible to adjust the brightness of the high-intensity discharge lamp in a time-division manner. The present invention provides a method for adjusting the brightness of a high-intensity gas-discharge lamp in a time-phased manner, based on the ballast control device 30, including an energy conversion inductor L1 and an energy conversion electrically connected between the first node a and the second node b Capacitor 50. The method for adjusting the brightness of a high intensity gas discharge lamp in a time division manner comprises the following steps:

A. Set the energy conversion and control module 60 transform the energy conversion capacitor 50, the power conversion control module 60 transforms the container 50 can be adjusted according to the electrical energy from the power supply and the first node V _N a collection Capacitance value;

B. The energy conversion control module 60 adjusts the capacitance value of the energy conversion capacitor 50 according to a preset time period, and makes the voltage value of the first node a constant at respective times according to the electrical signal collected from the first node a. The preset voltage value in the segment adjusts the voltage across the high-intensity discharge lamp 10 such that the high-intensity discharge lamp 10 has a corresponding luminance during each time period.

The energy conversion control module 60 is disposed in step A and the energy conversion capacitor 50 is modified. The method is not limited to the electrical structure of the third embodiment. The step A includes the following steps:

A1. Using n capacitors CI Cn connected in parallel between the first node a and the second node b, And manufacturing the energy conversion capacitor 50 in series with n controlled switching devices K1 Kn for controlling the switching of the respective branches in the parallel branch of each capacitor CI Cn;

Α2. The signal acquisition sub-module 61, the signal comparison analysis sub-module 62 and the driving signal sub-module 63 are disposed in the energy conversion control module 60; the signal acquisition sub-module 61 is from the power supply V _N and the first node a Collecting an electrical signal and transmitting the electrical signal to a signal comparison analysis sub-module 62; the signal comparison analysis sub-module

62 comparing and analyzing the collected electrical signals, and transmitting or closing the control signals of the parallel branches of the capacitors CI Cn to the driving signal sub-module 63; the driving signal sub-module 63 is The control signal sends a closed or open drive signal to the corresponding controlled switching device K1 Kn; then, the step B comprises the following sub-steps:

B1. At the beginning of the preset time period, the signal acquisition sub-module 61 collects the electrical signal from the first node a and transmits the electrical signal to the signal comparison analysis sub-module 62;

B2. The signal comparison analysis sub-module 62 compares the electrical signal collected to the first node a with the voltage value of the preset first node a of the inter-segment, and determines the first node a according to the comparison situation. The equivalent capacitance value to be set between the second node b, and to the drive signal sub-module 63, the control signal that the parallel branches of the capacitors C1, ..., Cn need to be turned on or off, that is, controlled The respective driving signals of the device Kl Kn;

In the third embodiment of the present invention, the micro control unit 621 issues a reference voltage to the voltage regulator comparator 623 for a predetermined period of time, and judges whether the voltage regulation is completed by the comparison result of the voltage regulator comparator 623.

B3. The driving signal sub-module 63 controls the controlled switching devices K1, ..., Kn to be closed or broken according to the driving signal, so that the parallel branches of the respective capacitors CI Cn are turned on or off. Thereby, the equivalent capacitance value between the first node a and the second node b is adjusted such that the equivalent capacitance value of the energy conversion capacitor 50 reaches the set equivalent capacitance value described in step B2.

It can be seen that for a single, relatively fixed reference voltage, the above method can be used to achieve voltage regulation control of the high intensity gas discharge lamp 10.

Claims

Rights request

1. A ballast control device configured for an inductive ballast adapted to a high intensity gas discharge lamp, electrically connected to a series branch of a high intensity gas discharge lamp (10) and an inductive ballast (L) Between the power supply (V _N ), the high-intensity discharge lamp (10) is further connected with a trigger (20) at both ends thereof;

The ballast control device (30) includes an energy conversion inductor (L1), an energy conversion capacitor (50), a first output terminal (OUT1) electrically connected to the inductance ballast (L), and the high intensity a second output end (OUT2) electrically connected to the gas discharge lamp (10) and two input terminals (IN1, IN2) respectively electrically connected to an output terminal of the power supply (V _N );

One end of the energy conversion inductor (L1), one end of the energy conversion capacitor (50), and a first output terminal (OUT1) of the ballast control device (30) are electrically connected to the first node (a), the energy The other end of the conversion inductor (L1) is electrically coupled to a first input (IN1) of the ballast control device (30), the other end of the energy conversion capacitor (50), the second input of the ballast control device (30) The terminal (IN2) and the second output terminal (OUT2) are electrically connected to the second node (b).

2. A ballast control device configured for an inductive ballast adapted to a high intensity gas discharge lamp according to claim 1 wherein:

Also included is an energy conversion control module (60) that controls the capacitance of the energy conversion capacitor (50) according to an electrical signal collected from the power supply (V _N ) and the first node (a). .

3. A ballast control device configured for an inductive ballast adapted to a high intensity gas discharge lamp according to claim 2, wherein:

The energy conversion capacitor (50) includes n capacitors (Cl, ..., Cn) connected in parallel between the first node (a) and the second node (b), and series capacitors (Cl, ..., Cn) n controlled switching devices (K1 n) for controlling the switching of the respective branches in the parallel branch _; the energy conversion control module (60) includes a signal acquisition sub-module (61), a signal Comparative analysis sub-module (62) and drive signal sub-module (63);

The signal acquisition sub-module (61) collects an electrical signal from the power supply (VN) and the first node (a) and transmits the telecommunications to a signal comparison analysis sub-module (62); the signal comparison analysis sub-module ( 62) comparing and analyzing the collected electrical signals, and transmitting control signals for closing or disconnecting the parallel branches of the capacitors (C1, ..., Cn) to the driving signal sub-module (63); Drive signal The sub-module (63) sends a closed or open drive signal to the corresponding controlled switching device (K1 Kn) according to the control signal, thereby adjusting the equivalent capacitance value of the energy conversion capacitor (50).

4. A ballast control device configured for an inductive ballast adapted to a high intensity gas discharge lamp according to claim 3, wherein:

The signal acquisition sub-module (61) includes a signal detection sub-module (611) for collecting voltage and current signals from the supply voltage (V _N ) and the first node (a) and from the first node (a) a harmonic detection sub-module (612) for acquiring a harmonic signal; the signal comparison analysis sub-module (62) includes a micro control unit (621) and a comparator (622) electrically coupled to the micro control unit (621); The electrical signal collected by the signal acquisition sub-module (61) is input to the micro control unit (621) and/or the comparator (622); the micro control unit (621) outputs the control signal in time series by signal analysis; the controlled switch The device (K1, ..., Kn) is a thyristor or a relay.

5. A ballast device configured for a high-intensity discharge lamp, electrically connected between the high-intensity discharge lamp (10) and a power supply (V _N ), the high-intensity discharge lamp (10) The terminal is also connected in parallel with a trigger (20);

The ballast device (40) includes a ballast inductor (L2), a ballast control device (30), two output terminals (OUT3, OUT4) respectively connected to the two ends of the high-intensity discharge lamp (10), and An input terminal (IN3, IN4) electrically connected to an output terminal of a power supply (V _N ); the ballast control device (30) includes an energy conversion inductor (L1) and an energy conversion capacitor (50);

One end of each of the ballast inductor (L2), the energy conversion inductor (L1), and the energy conversion capacitor (50) is electrically connected to the first node (a), and the other end of the ballast inductor (L2) is connected. An output end (OUT3) of the ballast device (40), the other end of the energy conversion inductor (L1) is electrically connected to a first input end (IN3) of the ballast device (40), the energy conversion The other end of the capacitor (50), the second output terminal (OUT4) of the ballast device (40), and the second input terminal (IN4) are electrically connected to the second node (b).

6. The ballast device configured for a high intensity gas discharge lamp according to claim 5, wherein:

7. The ballast device configured for a high intensity gas discharge lamp according to claim 6, wherein:

The energy conversion capacitor (50) includes n parallel connections at the first node (a) and the second node (b) a capacitance between (CI Cn) and n controlled switching devices (K1 Kn) connected in series to each of the capacitors (Cl, ..., Cn) for controlling the switching of the respective branches; The energy conversion control module (60) comprises a signal acquisition sub-module (61), a signal comparison analysis sub-module (62) and a drive signal sub-module (63);

The signal acquisition sub-module (61) collects an electrical signal from the power supply (V _N ) and the first node (a) and transmits the electrical signal to the signal comparison analysis sub-module (62); the signal comparison analyzer The module (62) compares and analyzes the collected electrical signals, and sends the control signals of the parallel branches of the closed or broken capacitors (C1, ..., Cn) to the driving signal sub-module in time series ( 63); the driving signal sub-module (63) sends a closed or broken driving signal to the corresponding controlled switching device (K1 Kn) according to the control signal, thereby adjusting the energy conversion capacitor (50), etc. Effective capacitance value.

8. The ballast device configured for a high intensity gas discharge lamp according to claim 7, wherein:

The signal acquisition sub-module (61) includes a signal detection sub-module (611) for collecting voltage and current signals from the power supply (V _N ) and the first node (a) and collecting from the first node (a) a harmonic detection sub-module of the harmonic signal (612); the signal comparison analysis sub-module (62) includes a micro control unit (621) and a comparator (622, 623) electrically connected to the micro control unit (621); Signal acquisition sub-module

(61) The collected electrical signal is input to the micro control unit (621) and/or the comparator (622); the micro control unit (621) outputs the control signal in time series by signal analysis; the controlled switching device (K1)

Kn) is a thyristor or a relay.

9. A method for soft start of a neon intensity gas discharge lamp, the ballast control device (30) according to claim 1 and claim 5, comprising an energy conversion inductor (L1) and an electrical connection at the first node (a And an energy conversion capacitor (50) between the second node (b); characterized by comprising the following steps:

A. setting an energy conversion control module (60) and modifying the energy conversion capacitor (50) to cause the energy conversion control module (60) to be collected from the power supply (V _N ) and the first node (a) An electrical signal can adjust a capacitance value of the energy conversion capacitor (50);

B. When the high-intensity discharge lamp (10) is illuminated, the energy conversion control module (60) determines the 髙 intensity gas discharge lamp based on the electrical signals collected from the power supply (V _N ) and the first node (a) (10) after the ignition is successful, the capacitance value of the energy conversion capacitor (50) is gradually increased, thereby adjusting the voltage of the first node (a), and the high-intensity discharge lamp (10) is discharged after the glow discharge The arc current slowly increases to the steady state operating current.

10. The method of soft start of a high intensity gas discharge lamp according to claim 9, wherein: The step A includes the following sub-steps:

A1. Using n capacitors (Cl, ..., connected in parallel between the first node (a) and the second node (b)

Cn), and n controlled switching devices (K l Kn) connected in parallel to each of the capacitors (CI Cn) for controlling the switching of the respective branches to manufacture the energy conversion capacitor (50);

Α2. The signal acquisition sub-module (61), the signal comparison analysis sub-module (62) and the driving signal sub-module (63) are disposed in the energy conversion control module (60); the signal acquisition sub-module (61) The power supply (V _N ) and the first node (a) collect an electrical signal and transmit the electrical signal to the signal comparison analysis sub-module (62); the signal comparison analysis sub-module (62) pairs the collected electrical The signals are compared and analyzed, and the control signals of the parallel branches of the closed or disconnected capacitors (CI Cn) are sent to the drive signal sub-module (63) in sequence; the drive signal sub-module (63) is The control signal sends a closed or broken drive signal to the corresponding controlled switching device (Kl Kn);

Then, the step B includes the following sub-steps:

B1. When the high-intensity discharge lamp (10) is illuminated, the signal acquisition sub-module (61) collects an electrical signal from the power supply (V _N ) and the first node (a) and transmits the electrical signal to the signal Comparative analysis sub-module (62);

B2. The signal comparison analysis sub-module (62) determines, according to the electrical signal collected in step B1, that the high-intensity gas discharge lamp (10) is successfully fired, and then sequentially sends the drive signal sub-module (63) to the drive signal sub-module (63) according to a fixed time interval. The drive signal of the control device (Kl Kn);

B3. The driving signal sub-module (63) controls each of the controlled switching devices (Kl, .... Kn) to be sequentially closed, so that the parallel branches of the capacitors (Cl, ..., Cn) are sequentially turned on. Thereby, the equivalent capacitance value between the first node (a) and the second node (b) is gradually increased, and the capacitance value of the energy conversion capacitor (50) is gradually increased.

1 1. A method for adjusting the brightness of a high-intensity gas discharge lamp by a time division, the ballast control device (30) according to claim 1 and claim 5, comprising an energy conversion inductor (L1) and an electrical connection at the first An energy conversion capacitor (50) between the node (a) and the second node (b); characterized by comprising the steps of:

A. setting an energy conversion control module (60) and modifying the energy conversion capacitor (50) such that the energy conversion control module (60) is collected from the power supply (V _N ) and the first node (a) An electrical signal capable of adjusting a capacitance value of the energy conversion capacitor (50);

B. The energy conversion control module (60) adjusts the capacitance value of the energy conversion capacitor (50) according to a preset time period, and makes the first node according to the F11 signal collected from the first node (a) Voltage value The preset 3⁄4 pressure values are constant in the respective time periods, thereby adjusting the voltage across the high-intensity discharge lamp (10) such that the high-intensity discharge lamp (10) has a corresponding luminous brightness in each time period.

12. The method of adjusting the luminance of a neon intensity gas discharge lamp according to claim 11, wherein:

The step A includes the following sub-steps:

A1. Using n capacitors (C1, ..., connected in parallel between the first node (a) and the second node (b)

Cn), and n controlled switching devices (Kl Kn) connected in parallel to each of the capacitors (CI Cn) for controlling the switching of the respective branches to manufacture the energy conversion capacitor (50);

Α2. The signal acquisition sub-module (61), the signal comparison analysis sub-module (62) and the driving signal sub-module (63) are disposed in the energy conversion control module (60); the signal acquisition sub-module (61) The power supply (V _N ) and the node (a) collect electrical signals and transmit the electrical signals to the signal comparison analysis sub-module (62); the signal comparison analysis sub-module (62) pairs the collected electrical signals Comparing and analyzing, and transmitting or closing the control signal of the parallel branch where each capacitor (CI Cn) is located to the driving signal sub-module (63) in time series; the driving signal sub-module (63) is according to the control signal Sending a closed or open drive signal to the corresponding controlled switching device (Kl Kn);

Then, the step B includes the following sub-steps:

B1. At the beginning of the preset time period, the signal acquisition sub-module (61) collects an electrical signal from the first node (a) and transmits the electrical signal to the signal comparison analysis sub-module (62);

B2. The signal comparison analysis sub-module (62) compares the electrical signal collected to the first node (a) with the voltage value of the preset first node (a) of the time period, and determines the The equivalent capacitance value to be set between the first node (a) and the second node (b), and the parallel branch of the capacitor (CI Cn) to be sent to the drive signal sub-module (63) needs to be turned on or The broken control signal, that is, the respective driving signals of the controlled switching device (Kl Kn);

B3. The driving signal sub-module (63) controls each of the controlled switching devices (KK ..., Kn) to be closed or opened according to the driving signal, so that the respective capacitors (CI Cn) are connected in parallel Turning on or off, thereby adjusting an equivalent capacitance value between the first node (a) and the second node (b), so that the energy conversion capacitor (50) equivalent capacitance value reaches the step B2 Set the equivalent capacitance value.