CN1092411C - Voltage regulating dc power supply used for high power laser - Google Patents
Voltage regulating dc power supply used for high power laser Download PDFInfo
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- CN1092411C CN1092411C CN98110968A CN98110968A CN1092411C CN 1092411 C CN1092411 C CN 1092411C CN 98110968 A CN98110968 A CN 98110968A CN 98110968 A CN98110968 A CN 98110968A CN 1092411 C CN1092411 C CN 1092411C
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- laser
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- power
- control unit
- analog switch
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Abstract
The present invention relates to a voltage regulating dc power supply used for high-power lasers, which mainly comprises a module with analogue switches, the module is arranged between a mutual inductor and a main transformer for boosting voltage, the analogue switches are respectively connected with a control unit and a trigger, the main transformer for boosting voltage is a transformer with a Y/Y type structure, and the control unit is a manual control structure or an electric control structure or an optical control structure or a digital automatic control structure. The present invention has the characteristics of simple and reasonable structure, high practicality, small volume, light weight, convenient maintenance, reliable operation, high efficiency and low cost, and is particularly suitable for high-power lasers.
Description
The present invention relates to a kind of adjusting pressuring dc power that is used for superpower laser, mainly be applicable to superpower laser.
The structure of prior art power supply as shown in Figure 1.It has adopted 3 synchrotrans 13, form circuit through sawtooth and produced sawtooth signal in 14 minutes three the tunnel, through differential circuit 15 differential, with monostable reshaper 18 paired pulses shapings, oscillating circuit 19 is modulated in addition again, by AND circuit 20, amplify by Darlington compound transistor as amplifying circuit 21, be coupled to primary as pulsed triggering circuit 22, the secondary output of pulse transformer is used to control the angle of flow of the ghyristor circuit 8 that antiparallel six controllable silicons constitute, the unfilled corner ripple of controllable silicon output is added to three the synthetic △ types input of the main transformer 9 of boosting that constitutes of transformer elementary independently, secondary is that the Y type is exported high pressure, by rectified three-phase circuit 10 output ripple direct currents, go out more level and smooth high direct voltage by inductance filter 11 filtering, be used for CO
2Laser 12 work.The formation of above-mentioned prior art power supply needs three groups of synchrotrans 13, three covers are by 14～21 phase shift plates of forming, pulsed triggering circuit 22 with six pulse transformers formations, find out this complex circuit thus, be to be made of discrete component and small scale integrated circuit entirely, the element discreteness is big, debug difficulties, if there are not commissioning devices such as oscilloscope, can't be to the circuit tracking.The adjustment precision of circuit is low, be easy to generate the output imbalance of three-phase electricity, will cause the imbalance of the magnetic flux of silicon steel sheet as adopt conventional three-phase transformer in circuit this moment, cause the transformer heating, be very easy to damage transformer,, again they are combined into the △ type and import so negatively three-phase transformer is divided independently transformer of three of coileds, the transformer of Y type output, this structure rises cost of equipment, and is whole heavy, bulky.Even so, three this transformer device structures that separated transformer combines can not bear serious imbalance, cause controllable silicon and rectifying tube to damage through regular meeting, even burn transformer.
Present high power CO
2Laser, the overwhelming majority is used for automobile industry, in motor cylinder block cancellation technology, the laser power of often using is 300W～400W, and electric current 2A～3A will produce with the load of laser for the power supply of above-mentioned prior art and to vibrate, can cause the cylinder cancellation inhomogeneous like this, quality can't guarantee.
Because the complexity of prior art power supply architecture, unstable properties makes a lot of users feel simply helpless to its breakdown maintenance, must the professional show up and could keep in repair.
Purpose of the present invention is the deficiency that overcomes above-mentioned prior art, provide a kind of simple and reasonable for structure, practical, volume is less, body weight is lighter, easy to maintenance, operation is reliable, cost is lower, efficient the is higher continuously adjustable DC power supply of the voltage that is used for superpower laser.
DC power supply of the present invention is seen accompanying drawing 2.It comprises the phase sequence cognition circuit 3 of linking three phase network 1 through fusible link 2, phase sequence cognition circuit 3 is the anti-and positive voltage monitors 4 that are connected to by neon lamp indication three-phase electricity phase sequence, voltage monitor 4 is in order to monitor the voltage in line voltage and the Power Operating Process, voltage monitor 4 is connected on the contactor, contactor 6 is connected respectively to operating unit 5 and instrument transformer 7, one tunnel module 32 of instrument transformer 7 output through having analog switch 31, main transformer 9 boosts, three-phase rectifier 10 and inductance filter 11 are up to the laser 12 as power source loads.Another road of instrument transformer 7 outputs is connected to rectifying tube 23, comparator 25.Comparator 25 is received overcurrent setting apparatus 24 and trigger 26 respectively.Trigger 26 links to each other with analog switch 31.Laser 12 is connected to by sample circuit 27, current stabilization setting apparatus 28, the control unit 34 that adder 29 and error amplifier 30 constitute.Error amplifier 30 in the control unit 34 links to each other with analog switch 31.
The above-mentioned main transformer 9 that boosts is single Y/Y type structure transformers only.
Above-mentioned module 32 is transistor intelligent objects, can select the module of different model according to the varying in size of power.It has the MJYS-JL-40 type to the MJYS-JL-350 type.
Above-mentioned instrument transformer 7 picks up the current signal in the course of work as the sample circuit of overcurrent protection, gives rectifying tube 23 rectifications, and provides comparator 25 as real-time measuring-signal.The value of overcurrent protection is set by overcurrent setting apparatus 24; give comparator 25 as reference signal; when measuring-signal during less than reference signal comparator 25 be failure to actuate; when measuring-signal during greater than reference signal; comparator 25 actions also promote trigger 26 upsets, thereby turn-off analog switch 31, and module 32 is output as zero-signal; whole power supply no signal is exported, thereby reaches the purpose of overcurrent protection.In the contingency overcurrent protector component wear is arranged, circuit is malfunctioning, at this moment also has fusible link 2 to protect the safety of whole power supply.
---multiple versions such as manual operation control and " automatically controlled "---electronic control is steady Current Control, and " light-operated "---permanent light power stabilize or the automatic control of numeral that the present invention has " manual control ".
During as manual control structure, the potentiometer that is connected in the current stabilization setting apparatus 28 on the adder 29 links to each other with module 32 control ends by analog switch 31, at this moment regulator potentiometer, module 32 just has correspondent voltage output, main transformer 9 boosts through boosting, by three-phase rectifier 10 rectifications, directly make laser 12 work through inductance filter 7 filtering.Manually the employing of structure is an inspection and maintenance of being convenient to major loop.
Select " automatically controlled "---when being electronic control structure, regulate current stabilization setting apparatus 28 setting voltage values earlier, through anti-phase difference signal of adder 29 outputs, amplify the control end that is added to module 32 by analog switch 31 by error amplifier 30, module 32 is input to the main transformer 9 that boosts and boosts, and the Y type output terminal of transformer 9 output high pressure is by three-phase rectifier 10 rectifications and export the high-pressure pulsating direct current, obtain direct current by inductance filter 11 filtering, provide laser 12 work.Because when " automatically controlled ", whole power supply has been carried out closed-loop control, at this moment cause the operating current of laser 12 that variation has taken place by certain reason, the variation of electric current is obtained by sample circuit 27, send the input of adder 29, adder 29 compares sampled signal and current stabilization setting signal, draw margin of error signal, carrying out error signal through amplifier 30 again amplifies, signal after the amplification is by analog switch 31, module 32 is carried out negative feedback, and then output signal is adjusted, thereby make the operating current of whole power supply obtain constant.
By analog switch 31, also can select the version of " light-operated ", at this moment external laser power meter 33 constitutes a closed loop controlling structure with whole regulator between analog switch 31 and laser 12, regulate the controlled quentity controlled variable of power meter 33 this moment earlier, through analog switch 31, and driver module 32, the output of module 32 is boosted by transformer 9, give three-phase rectifier 10 rectifications output high-voltage pulse direct current,, provide laser 12 work by inductance filter 11 filtering.Laser 12 is because certain factor causes laser power meter 33 to rise or descend this moment, all will carry out the Error Calculation of luminous power in the power meter, output error signal is adjusted through 31 pairs of module 32 control ends of analog switch, thereby make laser power meter 33 stable, reach power stabilize control.
Power supply of the present invention adds D/A converter at the control end of module 32 when adopting digital automatic control structure, just can implement numeral control automatically to whole power supply, and can be connected with computer, carries out computer controlled automatic.
Advantage of the present invention:
1) reduced volume and weight
From the structure of the power supply of the present invention of the structure of the prior art power supply of accompanying drawing 1 and accompanying drawing 2 more as can be known, three △ that independently transformer constituted/Y types of prior art main transformer 9 that boosts is replaced by list of the present invention Y/Y type transformer only, 8,13,14,15,16,17,18,19,20,21,22 each unit in the accompanying drawing 1 are removed in accompanying drawing 2 fully.
Owing to adopted module 32, make power supply of the present invention obtain optimization, circuit is simple, and operation is simplified, and has saved for 1/3 making man-hour than prior art, and volume has also dwindled 1/2, and weight has reduced 1/3, and the cost of raw material has reduced by 1/4.
2) save the energy, improved the efficient of power supply
Consider especially CO of laser 12
2The certain loads character of laser, the present invention has designed the boost coupling parameter of main transformer 9 (accompanying drawing 2 shows it) and integration module 32 of the Y/Y type that is complementary, guaranteed the equilibrium of operating voltage, the efficient of power supply of the present invention has been improved about 15% than existing power supply.
Power work efficient comparative example:
Its operating load laser 12 of the power supply of prior art and power supply of the present invention is same 2kW CO
2Laser.
Prior art power supply power supply input power of the present invention:
P
Go into=3 * 33A * 22V=21780W power output: P
Go out=3000V * 5A=15000W P
Go out=15000W operating efficiency:
The two efficient differs about 18%.3) voltage is adjustable continuously, and load characteristic is good, has expanded the range of application of laser.
Because the factors such as limitation of discrete component phase-shift circuit structure itself in the prior art power supply have caused the vibration in a certain current range.And this scope current C O exactly
2In the laser application motor cylinder block cancellation the most widely technology, the factor that causes quality to guarantee.The present invention has optimized design owing to adopted integration module 32, has realized that output voltage is adjustable continuously, and working stability is reliable, has expanded CO
2The range of application of laser.
4) debugging is convenient, and maintenance is simplified, and working stability is reliable.
Learn by above-mentioned being not difficult, the present invention is owing to adopted the structure of the main transformer 9 that boosts of integrated module 32 and optimum Match, in power supply debugging and maintenance, need not to use special instrument (as oscilloscope) and need not the professional and technical personnel and show up, thereby embodied optimal design of the present invention, also guaranteed that the working stability of power supply is reliable.
Description of drawings:
Accompanying drawing 1 is a prior art power supply architecture schematic diagram
Accompanying drawing 2 is power supply architecture schematic diagrames of the present invention
Accompanying drawing 3 is structure diagrams in the embodiment of the invention
Embodiment:
The main transformer 9 that boosts adopts Y/Y type structure.Maximum 5A～the 150A of the continuous adjustable output current of the highest 1000V～2200V of single-phase output voltage has selected single-phase maximum output voltage 1800V for use, electric current＞50A among the embodiment.
Phase sequence cognition circuit 3 is that employing electric capacity phase-shift theory designs, and with the neon lamp indication, electric capacity adopts CBB type 0.047 μ F/630V, and resistance adopts RJ14/0.25 W type metalfilmresistor, and resistance is 75K2, and 39K2,150K1 only.
That voltage monitor 4 adopts is 85L
1The type gauge outfit.
What operating unit 5 adopted is KD-ND and LA19-11A switch.
What contactor 6 was selected for use is 3TB41-17,3TH82-53 and CJ20-100 type contactor.
Three-phase rectifier 10 is to select for use the 2CL20A/10kV silicon stack to constitute bridge rectifier.
Inductance filter 11, inductance value＞2H, electric current＞8A.
Rectifying tube 23 is RS206 row bridge.
Trigger 26 is to constitute with the CD4011 integrated package.
Current stabilization setting apparatus 28, that select for use is WXD
2-534K7 potentiometer.
Present embodiment is taked the structure of " manual control " and " automatically controlled ", and " manual control " generally provides maintenance and emergency operation at ordinary times, and " automatically controlled " uses when then providing day-to-day operation.
Claims (7)
1. adjusting pressuring dc power that is used for superpower laser, mainly contain three phase network (1) and be connected to phase sequence cognition circuit (3) through fusible link (2), phase sequence cognition circuit (3) is received voltage monitor (4), voltage monitor (4) joins with contactor (6), contactor (6) is connected with operating unit (5) and instrument transformer (7) respectively, the output one tunnel of instrument transformer (7) is through the main transformer that boosts (9), three-phase rectifier (10) and inductance filter (11) are input on the laser (12) as power source loads, another road of instrument transformer (7) output is connected to rectifying tube (23), comparator (25), comparator (25) is connected to overcurrent setting apparatus (24) and trigger (26) respectively, laser (12) is connected to by sample circuit (27), current stabilization setting apparatus (28), the control unit (34) that adder (29) and error amplifier (30) constitute is characterized in that being equipped with module (32) between instrument transformer (7) and the main transformer that boosts (9); Module (32) is connected to analog switch (31); Analog switch (31) is connected respectively to error amplifier (30) and the trigger (26) in the control unit (34); The main transformer (9) that boosts is the transformer of single Y/Y type structure.
2. according to the adjusting pressuring dc power of claim 1, it is characterized in that analog switch (31) is the analogue transmission device.
3. according to the adjusting pressuring dc power of claim 1, it is characterized in that control unit (34) is manual control structure, or electronic control structure, or the photocontrol structure, or digital automatic control structure.
4. according to the adjusting pressuring dc power of claim 1 or 3, when it is characterized in that control unit (34) is manual control structure, the sample circuit (27) that is connected to laser (12) is received on the adder (29), links to each other with the control end of module (32) by analog switch (31) with potentiometer in the current stabilization setting apparatus (28) that adder (29) links to each other.
5. according to the adjusting pressuring dc power of claim 1 or 3, when it is characterized in that control unit (34) is electronic control structure, the sample circuit (27) that is connected to laser (12) is received on the adder (29), the adder (29) that links to each other with current stabilization setting apparatus (28) links to each other with the control end of analog switch (31) with module (32) by error amplifier (30), from laser (12) process control unit (34) and module (32), main transformer (9) boosts, three-phase rectifier (10), inductance filter (11) constitutes closed loop controlling structure up to laser (12).
6. according to the adjusting pressuring dc power of claim 1 or 3, when it is characterized in that control unit (34) is the photocontrol structure, between laser (12) and analog switch (31), be equipped with laser power meter (33), it and module (32), three-phase rectifier (10), inductance filter (11) constitutes a closed loop controlling structure up to laser (12).
7. according to the adjusting pressuring dc power of claim 1 or 3, when it is characterized in that control unit (34) is digital automatic control structure, the sample circuit (27) that is connected to laser (12) is received on the adder (29) that has current stabilization setting apparatus (28), adder (29) links to each other with the control end that module (32) has D/A converter with analog switch (31) by error amplifier (30), and D/A converter links to each other with computer again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98110968A CN1092411C (en) | 1998-07-20 | 1998-07-20 | Voltage regulating dc power supply used for high power laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98110968A CN1092411C (en) | 1998-07-20 | 1998-07-20 | Voltage regulating dc power supply used for high power laser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1242631A CN1242631A (en) | 2000-01-26 |
| CN1092411C true CN1092411C (en) | 2002-10-09 |
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ID=5220980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98110968A Expired - Fee Related CN1092411C (en) | 1998-07-20 | 1998-07-20 | Voltage regulating dc power supply used for high power laser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1092411C (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3896396A (en) * | 1973-05-14 | 1975-07-22 | Raytheon Co | Laser power supply |
| CN1042031A (en) * | 1989-06-20 | 1990-05-09 | 中国科学院上海光学精密机械研究所 | High-power pulse solid laser power source |
-
1998
- 1998-07-20 CN CN98110968A patent/CN1092411C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3896396A (en) * | 1973-05-14 | 1975-07-22 | Raytheon Co | Laser power supply |
| CN1042031A (en) * | 1989-06-20 | 1990-05-09 | 中国科学院上海光学精密机械研究所 | High-power pulse solid laser power source |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1242631A (en) | 2000-01-26 |
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