CN102005957A - Single-power supply cascade multi-level converter - Google Patents
Single-power supply cascade multi-level converter Download PDFInfo
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- CN102005957A CN102005957A CN 201010534173 CN201010534173A CN102005957A CN 102005957 A CN102005957 A CN 102005957A CN 201010534173 CN201010534173 CN 201010534173 CN 201010534173 A CN201010534173 A CN 201010534173A CN 102005957 A CN102005957 A CN 102005957A
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Abstract
The invention belongs to a multi-level power converter technique, particularly relating to a topological structure of a cascade multi-level converter. In the invention, the amount of using direct current power supply is reduced under the condition of outputting the level amount which is the same as that output by the traditional cascade type converter. The implementation method is as follows: a capacitance is used to replace the direct voltage source in the traditional topology, and the capacitance voltage is maintained through disconnected charging for the capacitance. The topological structure is mainly used for a high-voltage and high-power situation, and a multi secondary transformer in the original cascade circuit is omitted. Under the condition that small harmonic wave of the traditional multi-level converter is retained and each power transistor only bears the haploid power supply voltage, sine wave output which is triple as big as power supply voltage amplitude can be obtained, and high-capacity and energy bidirectional circulation are easy to realize.
Description
Technical field:
The present invention relates to many level power inversion transformation technique, adopt the method for booting to realize the topological structure of the cascade connection multi-level current transformer of single supply.
Background technology:
The thought of multi-level converter becomes a research focus in high-power frequency conversion field in recent years.Many level current transformers output voltage staircase waveform, thus can make the voltage waveform of output have less harmonic wave and lower du/dt.Along with the increase of output level number, the harmonic wave of output voltage will reduce.In addition, the multi-level inverse conversion technology is at switching loss that reduces system and conduction loss, and the EMI aspect performance of the withstand voltage and system of reduction pipe is all very good.
Many level current transformers can be divided into three kinds of structural topologies such as diode-clamped, capacitor-clamped type and cascade connection type, the diode-clamped current transformer is because increasing along with level number, therefore its switching device and a large amount of increase of clamping diode meeting only are suitable for the following many level topology of five level usually.And capacitor-clamped type current transformer has the problem of the charging/discharging voltage balance of electric capacity, and when level number increases, can need more clamping capacitance, therefore also has certain weakness.The mode that the cascading multiple electrical level frequency converter adopts some low pressure pwm powers unit to be in series realizes direct high pressure output, less to harmonic pollution in electric power net, current harmonic content is lower, input power factor is higher, and needn't adopt input harmonics filter and power factor correction, use comparatively extensive in the high-power field.
But concerning the cascading multiple electrical level current transformer, when needs obtain a plurality of level, can need more DC power supply, or adopt many secondary transformer respectively rectification obtain, or adopt a plurality of independent current sources.The operating frequency of many secondary transformer is power frequency, and is bulky, the line complexity, and cost an arm and a leg; And adopt a plurality of independent current sources, and if adopt battery as independent current source then total capacity is limited, and the voltage of battery is not high yet, is difficult for realizing big capacity, and then its volume is huge especially to adopt a plurality of independent rectifier power sources in this way, and price is more expensive.This makes this kind topology be restricted on using.
The tradition cascade connection multi-level can not be realized the connection back-to-back in the AC-DC-AC power converter, and therefore the application of cascade connection multi-level also is restricted aspect frequency converter.
Summary of the invention:
In order to overcome the above-mentioned problems in the prior art, the present invention proposes a kind of topological structure and all better simply single supply cascade connection multi-level of control strategy current transformer.This topology has realized only needing single DC power supply to import seven level cascade connection multi-level current transformers, and this topology is only born at all switching tubes under the situation of single times of supply voltage, output AC sine voltage amplitude is risen to be three times in DC power supply voltage.This topology has realized the connection back-to-back of cascade connection multi-level current transformer.
The technical scheme that the present invention solves its technical problem employing is:
The cascade of three inverter bridge phases partly adopts 12 switching tubes to connect into three inverter bridge structures, and the DC side of the DC side of first inverter bridge and the 3rd inverter bridge connects an electric capacity respectively, direct voltage source of the direct current side joint of second inverter bridge.The negative or positive electrode of DC power supply links to each other with the capacitance cathode or the negative pole of the DC side of first, the 3rd inverter bridge respectively through auxiliary switch or single-way switch pipe.
The invention has the beneficial effects as follows: this topological great advantage is only to need single power supply just can obtain the multi-level circuit of three inverter bridge cascades, simultaneously this topology has significantly improved the direct voltage utilance, only bears seven level sine voltages of three times of outputs under the single times of voltage condition and DC power supply voltage at switching tube.
Advantage:
(1) the design only just can save many output isolation transformers with a power supply, so the volume of complete machine, weight reduces greatly, and cost obviously reduces.The input of circuit can directly obtain by the electrical network rectification, need not transformer.
(2) under same input voltage, improve output voltage, significantly improved the direct voltage utilance.Bear at each switching tube under the condition of supply voltage and can obtain the sinewave output that amplitude is three times of supply voltages.
(3) can realize the two-way flow of energy, save electric energy.
(4),, be easy to expansion so realize modularization easily because adopted bridge circuit.
(5) can realize the connection back-to-back of cascade connection multi-level.
(6) frequency of switching device work is low, and loss is little, the efficient height of circuit, and the harmonic content in the output voltage waveforms is few, compares with clamp circuit, does not need clamping diode and clamping capacitance.When the output level number was identical, required component number was few.
Description of drawings:
Fig. 1 auxiliary switch all connects the circuit topology of power cathode
Fig. 2 auxiliary switch all connects the circuit topology of positive source
Connect positive source on Fig. 3 auxiliary switch, connect the circuit topology of power cathode down
Connect power cathode on Fig. 4 auxiliary switch, connect the circuit topology of positive source down
V is a direct-current input power supplying in above-mentioned figure, S11, S12, S13, S14 are the switching tube of first inverter bridge of inverse parallel diode in the belt body, S21, S22, S23, S24 are the switching tube of second inverter bridge of inverse parallel diode in the belt body, and S31, S32, S33, S34 are the switching tube of the 3rd inverter bridge of inverse parallel diode in the belt body.C1 is the DC side filter capacitor of first inverter bridge, and C3 is the DC side filter capacitor of the 3rd inverter bridge.Sc1 is the auxiliary switch of capacitor C 1, and Sc3 is the auxiliary switch of capacitor C 3.Z is output loading.D1, D2 are the diode of bidirectional switch pipe combination in parallel.D3, D4 are the diode of bidirectional switch pipe tandem compound.D5, D6, D7, D8 are the diode of bidirectional switch pipe bridge formula combination.T1, T2 are the switching tube of bidirectional switch pipe combination in parallel.T3, T4 are the switching tube of bidirectional switch pipe tandem compound.T5 is the switching tube of bidirectional switch pipe bridge formula combination.
Embodiment:
In Fig. 1, this topology comprises inverter bridge (1), inverter bridge (2), inverter bridge (3), auxiliary switch (4) and auxiliary switch (5), wherein inverter bridge (1) is: the collector electrode of a termination switching tube (S11) of electric capacity (C1) and the collector electrode of switching tube (S13), the emitter of the emitter of another termination switching tube (S12) and switching tube (S14), the emitter of switching tube (S11) connects the collector electrode of switching tube (S12), and the emitter of switching tube (S13) connects the collector electrode of switching tube (S14); Inverter bridge (2) is: the direct voltage source positive pole connects the collector electrode of switching tube (S21) and the collector electrode of switching tube (S23), negative pole connects the emitter of switching tube (S22) and the emitter of switching tube (S24), the emitter of switching tube (S21) connects the collector electrode of switching tube (S22), and the emitter of switching tube (S23) connects the collector electrode of switching tube (S24); Inverter bridge (3) is: the collector electrode of a termination switching tube (S31) of electric capacity (C3) and the collector electrode of switching tube (S33), the emitter of another termination switching tube (S32) emitter and switching tube (S34), the emitter of switching tube (S31) connects the collector electrode of switching tube (S32), and the emitter of switching tube (S33) connects the current collection of switching tube (S34); Auxiliary switch (4) is: be single-way switch pipe or bidirectional switch pipe; Auxiliary switch (5) is: be single-way switch pipe or bidirectional switch pipe; The emitter of the switching tube (S13) of inverter bridge (1) and the collector electrode of switching tube (S14) connect the emitter of switching tube (S21) of inverter bridge (2) and the collector electrode of switching tube (S22); The emitter of the switching tube (S23) of inverter bridge (2) and the collector electrode of switching tube (S24) connect the emitter of switching tube (S31) of inverter bridge (3) and the collector electrode of switching tube (S32); The emitter of the switching tube (S11) of inverter bridge (1) and the collector electrode of switching tube (S12) connect an end of load (Ro), and the emitter of the switching tube (S33) of inverter bridge (3) and the collector electrode of switching tube (S34) connect the other end of load; The emitter of the switching tube (S12) of one termination inverter bridge (1) of auxiliary switch (4) and the emitter of switching tube (S14), the negative level of another termination DC power supply of auxiliary switch (4); The emitter of the switching tube (S32) of one termination inverter bridge (3) of auxiliary switch (5) and the emitter of switching tube (S34), the negative level of another termination DC power supply of auxiliary switch (5);
The switching tube (S21, S22, S23, S24) of the switching tube of described inverter bridge (1) (S11, S12, S13, S14), inverter bridge (2) and the switching tube (S31, S32, S33, S34) of inverter bridge (3) are for having the switching tube of inverse parallel diode in the body or being formed by diodeless switching tube and diode combinations in the body; Auxiliary switch (4) and auxiliary switch (5) are single-way switch pipe or single-way switch combination or bidirectional switch pipe or bidirectional switch combination.
In Fig. 2, originally open up and comprise inverter bridge (1), inverter bridge (2), inverter bridge (3), auxiliary switch (4) and auxiliary switch (5), wherein inverter bridge (1) is: the collector electrode of a termination switching tube (S11) of electric capacity (C1) and the collector electrode of switching tube (S13), the emitter of the emitter of another termination switching tube (S12) and switching tube (S14), the emitter of switching tube (S11) connects the collector electrode of switching tube (S12), and the emitter of switching tube (S13) connects the collector electrode of switching tube (S14); Inverter bridge (2) is: the direct voltage source positive pole connects the collector electrode of switching tube (S21) and the collector electrode of switching tube (S23), negative pole connects the emitter of switching tube (S22) and the emitter of switching tube (S24), the emitter of switching tube (S21) connects the collector electrode of switching tube (S22), and the emitter of switching tube (S23) connects the collector electrode of switching tube (S24); Inverter bridge (3) is: the collector electrode of a termination switching tube (S31) of electric capacity (C3) and the collector electrode of switching tube (S33), the emitter of another termination switching tube (S32) emitter and switching tube (S34), the emitter of switching tube (S31) connects the collector electrode of switching tube (S32), and the emitter of switching tube (S33) connects the current collection of switching tube (S34); Auxiliary switch (4) is: the collector electrode of switching tube (Sc11) connects the collector electrode of switching tube (Sc12); Auxiliary switch (5) is: the collector electrode of switching tube (Sc31) connects the collector electrode of switching tube (Sc32); The emitter of the switching tube (S13) of inverter bridge (1) and the collector electrode of switching tube (S14) connect the emitter of switching tube (S21) of inverter bridge (2) and the collector electrode of switching tube (S22); The emitter of the switching tube (S23) of inverter bridge (2) and the collector electrode of switching tube (S24) connect the emitter of switching tube (S31) of inverter bridge (3) and the collector electrode of switching tube (S32); The emitter of the switching tube (S11) of inverter bridge (1) and the collector electrode of switching tube (S12) connect an end of load (Ro), and the emitter of the switching tube (S33) of inverter bridge (3) and the collector electrode of switching tube (S34) connect the other end of load; The collector electrode of the switching tube (S11) of one termination inverter bridge (1) of auxiliary switch (4) and the collector electrode of switching tube (S13), the positive level of another termination DC power supply of auxiliary switch (4); The collector electrode of the switching tube (S31) of one termination inverter bridge (3) of auxiliary switch (5) and the collector electrode of switching tube (S33), the positive level of another termination DC power supply of auxiliary switch (5);
The switching tube (S21, S22, S23, S24) of the switching tube of described inverter bridge (1) (S11, S12, S13, S14), inverter bridge (2) and the switching tube (S31, S32, S33, S34) of inverter bridge (3) are for having the switching tube of inverse parallel diode in the body or being formed by diodeless switching tube and diode combinations in the body; Auxiliary switch (4) and auxiliary switch (5) are single-way switch pipe or single-way switch combination or bidirectional switch pipe or bidirectional switch combination.
In Fig. 3, originally open up and comprise inverter bridge (1), inverter bridge (2), inverter bridge (3), auxiliary switch (4) and auxiliary switch (5), wherein inverter bridge (1) is: the collector electrode of a termination switching tube (S11) of electric capacity (C1) and the collector electrode of switching tube (S13), the emitter of the emitter of another termination switching tube (S12) and switching tube (S14), the emitter of switching tube (S11) connects the collector electrode of switching tube (S12), and the emitter of switching tube (S13) connects the collector electrode of switching tube (S14); Inverter bridge (2) is: the direct voltage source positive pole connects the collector electrode of switching tube (S21) and the collector electrode of switching tube (S23), negative pole connects the emitter of switching tube (S22) and the emitter of switching tube (S24), the emitter of switching tube (S21) connects the collector electrode of switching tube (S22), and the emitter of switching tube (S23) connects the collector electrode of switching tube (S24); Inverter bridge (3) is: the collector electrode of a termination switching tube (S31) of electric capacity (C3) and the collector electrode of switching tube (S33), the emitter of another termination switching tube (S32) emitter and switching tube (S34), the emitter of switching tube (S31) connects the collector electrode of switching tube (S32), and the emitter of switching tube (S33) connects the current collection of switching tube (S34); Auxiliary switch (4) is: the collector electrode of switching tube (Sc11) connects the collector electrode of switching tube (Sc12); Auxiliary switch (5) is: the collector electrode of switching tube (Sc31) connects the collector electrode of switching tube (Sc32); The emitter of the switching tube (S13) of inverter bridge (1) and the collector electrode of switching tube (S14) connect the emitter of switching tube (S21) of inverter bridge (2) and the collector electrode of switching tube (S22); The emitter of the switching tube (S23) of inverter bridge (2) and the collector electrode of switching tube (S24) connect the emitter of switching tube (S31) of inverter bridge (3) and the collector electrode of switching tube (S32); The emitter of the switching tube (S11) of inverter bridge (1) and the collector electrode of switching tube (S12) connect an end of load (Ro), and the emitter of the switching tube (S33) of inverter bridge (3) and the collector electrode of switching tube (S34) connect the other end of load; The collector electrode of the switching tube (S11) of one termination inverter bridge (1) of auxiliary switch (4) and the collector electrode of switching tube (S13), the positive level of another termination DC power supply of auxiliary switch (4); The emitter of the switching tube (S32) of one termination inverter bridge (3) of auxiliary switch (5) and the emitter of switching tube (S34), the negative level of another termination DC power supply of auxiliary switch (5);
The switching tube (S21, S22, S23, S24) of the switching tube of described inverter bridge (1) (S11, S12, S13, S14), inverter bridge (2) and the switching tube (S31, S32, S33, S34) of inverter bridge (3) are for having the switching tube of inverse parallel diode in the body or being formed by diodeless switching tube and diode combinations in the body; Auxiliary switch (4) and auxiliary switch (5) are single-way switch pipe or single-way switch combination or bidirectional switch pipe or bidirectional switch combination.
In Fig. 4, this topology belong to the cascade connection multi-level current transformer topological structure it comprise inverter bridge (1), inverter bridge (2), inverter bridge (3), auxiliary switch (4) and auxiliary switch (5), wherein inverter bridge (1) is: the collector electrode of a termination switching tube (S11) of electric capacity (C1) and the collector electrode of switching tube (S13), the emitter of the emitter of another termination switching tube (S12) and switching tube (S14), the emitter of switching tube (S11) connects the collector electrode of switching tube (S12), and the emitter of switching tube (S13) connects the collector electrode of switching tube (S14); Inverter bridge (2) is: the direct voltage source positive pole connects the collector electrode of switching tube (S21) and the collector electrode of switching tube (S23), negative pole connects the emitter of switching tube (S22) and the emitter of switching tube (S24), the emitter of switching tube (S21) connects the collector electrode of switching tube (S22), and the emitter of switching tube (S23) connects the collector electrode of switching tube (S24); Inverter bridge (3) is: the collector electrode of a termination switching tube (S31) of electric capacity (C3) and the collector electrode of switching tube (S33), the emitter of another termination switching tube (S32) emitter and switching tube (S34), the emitter of switching tube (S31) connects the collector electrode of switching tube (S32), and the emitter of switching tube (S33) connects the current collection of switching tube (S34); Auxiliary switch (4) is: the collector electrode of switching tube (Sc11) connects the collector electrode of switching tube (Sc12); Auxiliary switch (5) is: the collector electrode of switching tube (Sc31) connects the collector electrode of switching tube (Sc32); The emitter of the switching tube (S13) of inverter bridge (1) and the collector electrode of switching tube (S14) connect the emitter of switching tube (S21) of inverter bridge (2) and the collector electrode of switching tube (S22); The emitter of the switching tube (S23) of inverter bridge (2) and the collector electrode of switching tube (S24) connect the emitter of switching tube (S31) of inverter bridge (3) and the collector electrode of switching tube (S32); The emitter of the switching tube (S11) of inverter bridge (1) and the collector electrode of switching tube (S12) connect an end of load (Ro), and the emitter of the switching tube (S33) of inverter bridge (3) and the collector electrode of switching tube (S34) connect the other end of load; The emitter of the switching tube (S12) of one termination inverter bridge (1) of auxiliary switch (4) and the emitter of switching tube (S14), the negative level of another termination DC power supply of auxiliary switch (4); The collector electrode of the switching tube (S31) of one termination inverter bridge (3) of auxiliary switch (5) and the collector electrode of switching tube (S33), the positive level of another termination DC power supply of auxiliary switch (5).
The switching tube (S21, S22, S23, S24) of the switching tube of described inverter bridge (1) (S11, S12, S13, S14), inverter bridge (2) and the switching tube (S31, S32, S33, S34) of inverter bridge (3) are for having the switching tube of inverse parallel diode in the body or being formed by diodeless switching tube and diode combinations in the body; Auxiliary switch (4) and auxiliary switch (5) are single-way switch pipe or single-way switch combination or bidirectional switch pipe or bidirectional switch combination.
Claims (8)
1. the topological structure of a single supply cascaded multilevel inverter is characterized in that:
This inverter comprises inverter bridge (1), inverter bridge (2), inverter bridge (3), auxiliary switch (4) and auxiliary switch (5); Inverter bridge (1) is: the collector electrode of a termination main switch (S11) of electric capacity (C1) and the collector electrode of main switch (S13), the emitter of the emitter of another termination main switch (S12) and main switch (S14), the emitter of main switch (S11) connects the collector electrode of main switch (S12), and the emitter of main switch (S13) connects the collector electrode of main switch (S14); Inverter bridge (2) is: the direct voltage source positive pole connects the collector electrode of main switch (S21) and the collector electrode of main switch (S23), the direct voltage source negative pole connects the emitter of main switch (S22) and the emitter of main switch (S24), the emitter of main switch (S21) connects the collector electrode of main switch (S22), and the emitter of main switch (S23) connects the collector electrode of main switch (S24); Inverter bridge (3) is: the collector electrode of a termination main switch (S31) of electric capacity (C3) and the collector electrode of main switch (S33), the emitter of another termination main switch (S32) emitter and main switch (S34), the emitter of main switch (S31) connects the collector electrode of main switch (S32), and the emitter of main switch (S33) connects the current collection of main switch (S34); The emitter of the main switch (S13) of inverter bridge (1) and the collector electrode of main switch (S14) connect the emitter of main switch (S21) of inverter bridge (2) and the collector electrode of main switch (S22); The emitter of the main switch (S23) of inverter bridge (2) and the collector electrode of main switch (S24) connect the emitter of main switch (S31) of inverter bridge (3) and the collector electrode of main switch (S32); The emitter of the main switch (S11) of inverter bridge (1) and the collector electrode of main switch (S12) connect an end of load (Z), and the emitter of the main switch (S33) of inverter bridge (3) and the collector electrode of main switch (S34) connect the other end of load; Auxiliary switch (4) is single-way switch or bidirectional switch, an end of the electric capacity (C1) of a termination inverter bridge (1) of auxiliary switch (4), the anodal or negative level of another termination DC power supply of auxiliary switch (4); Auxiliary switch (5) is single-way switch or bidirectional switch, an end of the electric capacity of a termination inverter bridge (3) of auxiliary switch (5), the anodal or negative level of another termination DC power supply of auxiliary switch (5).
2. according to the cascade converter of claim 1, it is characterized in that: the main switch (S21, S22, S23, S24) of the main switch of inverter bridge (1) (S11, S12, S13, S14), inverter bridge (2) and the main switch (S31, S32, S33, S34) of inverter bridge (3) are MOSFET.
3. according to the cascade converter of claim 1, it is characterized in that: the main switch (S21, S22, S23, S24) of the main switch of inverter bridge (1) (S11, S12, S13, S14), inverter bridge (2) and the main switch (S31, S32, S33, S34) of inverter bridge (3) form for diodeless IGBT in the belt body or GTO and diode combinations.
4. according to the cascade converter of claim 1, it is characterized in that: auxiliary switch (4) and auxiliary switch (5) are in parallel with diode (D1, D2) respectively by IGBT or GTO (T1, T2), and both are in series again then.
5. according to the cascade converter of claim 1, it is characterized in that: auxiliary switch (4) and auxiliary switch (5) are connected with diode (D1, D2) respectively by IGBT or GTO or MOSFET semiconductor (T1, T2), and both are formed in parallel again then.
6. according to the cascade converter of claim 1, it is characterized in that: auxiliary switch (4) and auxiliary switch (5) are composed in series with diode (D1 or D2) by IGBT or GTO or MOSFET semiconductor (T1 or T2).
7. according to the cascade converter of claim 1, it is characterized in that: auxiliary switch (4) and auxiliary switch (5) are composed in parallel by the IGBT or the GTO of no inverse parallel diode in the body.
8. according to the cascade converter of claim 1, it is characterized in that: auxiliary switch (4) and auxiliary switch (5) are made up of full-wave rectification bridge and IGBT or GTO or MOSFET: the emitter/source electrode of switching tube (T5) connects the sun level of the anode and the diode (D6) of diode (D5); Collector electrode/the source electrode of switching tube (T5) connects the negative electrode of diode (D7) and the cathode of diode (D8); The anode of the negative electrode of diode (D5) and diode (D7) connects an end of input; The anode of the negative electrode of diode (D6) and diode (D8) connects the other end of input.
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| CN102170244A (en) * | 2011-04-28 | 2011-08-31 | 燕山大学 | Cascaded multi-level current transformer of shared power supply |
| CN107370466A (en) * | 2011-09-16 | 2017-11-21 | 意法半导体研发(深圳)有限公司 | Amplifying circuit |
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| CN103872936A (en) * | 2014-03-24 | 2014-06-18 | 长安大学 | Single-power multi-level mixed type inverter |
| CN105320196A (en) * | 2014-06-16 | 2016-02-10 | 香港城市大学 | Current control apparatus |
| CN105071682A (en) * | 2015-08-04 | 2015-11-18 | 苏州弘鹏新能源有限公司 | High-reliability inverter |
| US10218285B2 (en) | 2015-10-19 | 2019-02-26 | Siemens Aktiengesellschaft | Medium voltage hybrid multilevel converter and method for controlling a medium voltage hybrid multilevel converter |
| CN106533310A (en) * | 2016-12-30 | 2017-03-22 | 华中科技大学 | Direct current bias sinusoidal current motor controller |
| CN108540003A (en) * | 2018-05-18 | 2018-09-14 | 郑州大学 | A kind of multilevel photovoltaic grid-connected inverter of flexible T-type and its modulator approach |
| CN108540003B (en) * | 2018-05-18 | 2020-06-23 | 郑州大学 | Flexible T-shaped multi-level photovoltaic grid-connected inverter and modulation method thereof |
| CN108899942A (en) * | 2018-05-25 | 2018-11-27 | 李勇 | The adjustable charge/discharge control circuit of output voltage and its control method based on battery pack H bridge cascaded structure |
| CN110138005A (en) * | 2019-05-13 | 2019-08-16 | 郑州大学 | It is a kind of to cascade multi-modal photovoltaic combining inverter and its modulator approach |
| CN110138005B (en) * | 2019-05-13 | 2023-02-03 | 郑州大学 | Cascaded multi-mode photovoltaic grid-connected inverter and modulation method thereof |
| CN114301321A (en) * | 2021-12-30 | 2022-04-08 | 辽宁工程技术大学 | Hysteresis loop SVPWM reconfigurable fault-tolerant control method for single-phase voltage source multi-level inverter |
| CN114301321B (en) * | 2021-12-30 | 2024-01-19 | 辽宁工程技术大学 | Reconfigurable fault-tolerant control method for hysteresis SVPWM of single-phase voltage source multi-level inverter |
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