CN101635530A - Single-stage forward type high-frequency linked inverter - Google Patents
Single-stage forward type high-frequency linked inverter Download PDFInfo
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- CN101635530A CN101635530A CN200910184507A CN200910184507A CN101635530A CN 101635530 A CN101635530 A CN 101635530A CN 200910184507 A CN200910184507 A CN 200910184507A CN 200910184507 A CN200910184507 A CN 200910184507A CN 101635530 A CN101635530 A CN 101635530A
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Abstract
The invention discloses a single-stage forward type high-frequency linked inverter belonging to the field of power electronic inverter and comprising a primary side circuit, a first high-frequency transformer, a second high-frequency transformer and a secondary side circuit, wherein the primary side circuit comprises a power supply, two voltage-dividing capacitors and four power switch pipes; the first high-frequency transformer and the second high-frequency transformer both comprise primary side windings and secondary side windings; and the secondary side circuit comprises three four-quadrant high-frequency power switch, a filter inductor, a filter capacitor and a load. The single-stage forward type high-frequency linked inverter is formed in such a way that two two-way power flow forward converter units are in series connected at input ends in a staggered way and in parallel connected at output ends in the staggered way, the two two-way power flow forward converter units work in the staggered way all the time, and diodes of switch pipe bodies realize the magnetic resetting of the high-frequency transformers. The invention has low voltage stress of primary and secondary side switch pipes, low capacity of the voltage-dividing capacitors and high transformation efficiency and reliability, is suitable for a medium voltage input occasion and a high voltage input occasion and especially has extensive application prospect in a new energy power generation field.
Description
Technical field
The present invention relates to a kind of inverter, relate in particular to a kind of single-stage forward type high-frequency linked inverter, belong to the converters field.
Background technology
Inverter is that the applied power semiconductor device is transformed into the power conversion unit that alternating current uses for AC load with direct current.The inverter that high frequency electrical isolation is arranged between output AC load and input DC power, be called high-frequency chain inverter, the high frequency electrical isolation element mainly plays following effect in inverter: (1) has realized the electrical equipment isolation between inverter output and the input, has improved fail safe, reliability and the Electro Magnetic Compatibility of invertor operation; (2) realized coupling between inverter output voltage and the input voltage, guaranteed the quality of output voltage when promptly allowing input voltage in wide region, to change, its range of application is widened greatly; (3) operating frequency of high frequency transformer is more than 20kHz, and its volume, weight and audio-frequency noise are greatly diminished, and has overcome the defective of low frequency chain inverter effectively.Therefore, be the inversion occasion of main dc power supply with DC generator, storage battery, solar cell and fuel cell, high-frequency chain inverter is with a wide range of applications, and particularly has the inversion occasion of high request that prior using value is arranged to volume and weight.
High-frequency chain inverter is made of high frequency electrical isolation DC-DC converter and the cascade of inverter bridge two-stage circuit structure usually, and electric energy has passed through Two Stages, and its conversion efficiency must be lower than the efficient of single-stage high-frequency isolation DC-DC converter.
Chinese patent CN1758521A has proposed one group of single-stage two-way step down DC converter type high frequency link inverter, Chinese patent CN101414791A has proposed one group of differential decompression DC chopper type high-frequency chain inverter, the high-frequency chain inverter basic thought of mentioning in above-mentioned two patents is all identical by two, the high frequency electrical isolation bidirectional power flow DC converter of exporting anti-phase low frequency sinuous pulsation direct voltage constitutes inverter, the positive half cycle waveform and the negative half period waveform of two DC converter difference sine wave outputs, therefore at any half cycle of sine wave output, always have a DC converter to be in idle state, so the utilance of device does not reach maximization.Also mentioned the high-frequency chain inverter that is made of the positive activation type converter in above-mentioned two patents, caused the maximum duty cycle of switching tube to be restricted owing to the specific question of forward converter transformer magnetic reset exists, the voltage stress of switching tube is higher simultaneously.
Summary of the invention
The present invention is directed to the defective that background technology medium-high frequency chain inverter exists and propose a kind of conversion efficiency height, single-stage forward type high-frequency linked inverter that reliability is high.
Single-stage forward type high-frequency linked inverter of the present invention, its structure comprises: former limit circuit, first high frequency transformer, second high frequency transformer and secondary circuit, wherein: former limit circuit comprises DC power supply, the first dividing potential drop electric capacity, the second dividing potential drop electric capacity, first power switch pipe, second power switch pipe, the 3rd power switch pipe and the 4th power switch pipe, the positive pole of DC power supply connects an end of the first dividing potential drop electric capacity respectively, the drain electrode of the drain electrode of first power switch pipe and second power switch pipe, the negative pole of DC power supply connect an end of the second dividing potential drop electric capacity respectively, the source electrode of the source electrode of the 4th power switch pipe and the 3rd power switch pipe; First high frequency transformer comprises the first former limit winding and the first secondary winding, second high frequency transformer comprises the second former limit winding and the second secondary winding, the end of the same name of the first former limit winding connects the drain electrode of the source electrode and the 4th power switch pipe of first power switch pipe respectively, the non-same polarity of the first former limit winding connects the end of the same name of the second former limit winding, the other end of the first dividing potential drop electric capacity and the other end of the second dividing potential drop electric capacity respectively, and the non-same polarity of the second former limit winding connects the drain electrode of the source electrode and the 3rd power switch pipe of second power switch pipe respectively; Secondary circuit comprises the first four-quadrant high frequency power switch, the second four-quadrant high frequency power switch, the 3rd four-quadrant high frequency power switch, filter inductance, filter capacitor and load, one end of the first four-quadrant high frequency power switch connects the end of the same name of the first secondary winding, the other end of the first four-quadrant high frequency power switch connects an end of the second four-quadrant high frequency power switch respectively, one end of the 3rd four-quadrant high frequency power switch and an end of filter inductance, the other end of the second four-quadrant high frequency power switch connects the end of the same name of the second secondary winding, the non-same polarity of the second secondary winding connects the non-same polarity of the first secondary winding respectively, the other end of the 3rd four-quadrant high frequency power switch, one end of filter capacitor and an end of load, the other end of filter inductance connects the other end of filter capacitor and the other end of load respectively.
The present invention is at the input interleaved series by two bidirectional power flow forward converter unit, the output crisscross parallel constitutes, the body diode of power switch pipe has been realized the magnetic reset of two high frequency transformers, realized the multiplexing of switching tube, significantly reduced the quantity of switching tube, two staggered all the time work in normal shock unit, the structure of input interleaved series makes that input dividing potential drop electric capacity is high frequency capacitance, the volume and the size of dividing potential drop electric capacity have been reduced greatly, the structure of output crisscross parallel has improved equivalent switching frequency and equivalent duty ratio, reduce inductive current ripple and output voltage ripple greatly, reduced the voltage stress of switching tube simultaneously.In sum, the present invention has following beneficial effect:
(1) input, output high frequency electrical isolation, output is strong with the input voltage matching capacity;
(2) high frequency transformer is finished magnetic reset by the body diode of switching tube, does not need extra magnetic reset winding or magnetic reset circuit, does not also need the magnetic reset diode of conventional two-transistor forward converter, and circuit structure is simple;
(3) transformer in the two-way magnetization in the cycle of whole output voltage, has improved the magnetic core utilance in HF switch unidirectional magnetiztion in the cycle;
(4) input dividing potential drop electric capacity is high frequency capacitance, has reduced the volume and the size of dividing potential drop electric capacity greatly;
(5) secondary crisscross parallel output has improved equivalent duty inductive current pulsation frequency when, helps reducing the output filter volume, reduces output voltage ripple, improves power density, reduces cost.
Description of drawings
Fig. 1 is the circuit theory diagrams of single-stage forward type high-frequency linked inverter of the present invention.
Fig. 2 (a)～(d) is respectively the circuit diagram of four kinds of four-quadrant high frequency power switches.
Fig. 3 is the embodiment circuit theory diagrams of the present invention when adopting four-quadrant high frequency power switch shown in Fig. 2 (a).
Fig. 4 is the main oscillogram of embodiment circuit under four kinds of mode of operations (A-D-C-B) shown in Figure 3 when zero load,
Among the figure: V
GS1～V
GS10Be respectively switching tube S
1～S
10Drive signal; v
c-control voltage; v
t-triangle wave voltage; v
o-output voltage; i
o-output current.
Fig. 5 (a) is the equivalent circuit theory figure of embodiment circuit under mode of operation A and D shown in Figure 3 when zero load, and Fig. 5 (b) is the equivalent circuit theory figure of embodiment circuit under mode of operation C and B shown in Figure 3 when zero load.
Fig. 6 is the circuit theory diagrams of single-stage positive activation type semi-bridge type high-frequency chain inverter.
Label title among Fig. 1, Fig. 3, Fig. 5, Fig. 6: the former limit of 10-circuit; The 20-secondary circuit; S
1～S
4It is respectively first, second, third, fourth power switch pipe; T
1, T
2It is respectively first, second high frequency transformer; N
P1, N
P2It is respectively first, second former limit winding; N
S1, N
S2It is respectively first, second secondary winding; C
1, C
2Be respectively first, second dividing potential drop electric capacity; S
D1～S
D3It is respectively first, second, third four-quadrant high frequency power switch; S
5～S
10All are the switch mosfet pipes that constitute four-quadrant high frequency power switch; V
In-DC power supply (input voltage); L
o-filter inductance; C
o-filter capacitor; R
o-load.
Embodiment
As shown in Figure 1, the structure of single-stage forward type high-frequency linked inverter of the present invention comprises: former limit circuit 10, the first high frequency transformer T
1, the second high frequency transformer T
2With secondary circuit 20, wherein: former limit circuit 10 comprises DC power supply V
In, the first dividing potential drop capacitor C
1, the second dividing potential drop capacitor C
2, first power switch tube S
1, second power switch tube S
2, the 3rd power switch tube S
3With the 4th power switch tube S
4, DC power supply V
InPositive pole connect the first dividing potential drop capacitor C respectively
1An end, first power switch tube S
1The drain electrode and second power switch tube S
2Drain electrode, DC power supply V
InNegative pole connect the second dividing potential drop capacitor C respectively
2An end, the 4th power switch tube S
4Source electrode and the 3rd power switch tube S
3Source electrode; The first high frequency transformer T
1Comprise the first former limit winding N
P1With the first secondary winding N
S1, the second high frequency transformer T
2Comprise the second former limit winding N
P2With the second secondary winding N
S2, the first former limit winding N
P1End of the same name connect first power switch tube S respectively
1Source electrode and the 4th power switch tube S
4Drain electrode, the first former limit winding N
P1Non-same polarity connect the second former limit winding N respectively
P2End of the same name, the first dividing potential drop capacitor C
1The other end and the second dividing potential drop capacitor C
2The other end, the second former limit winding N
P2Non-same polarity connect second power switch tube S respectively
2Source electrode and the 3rd power switch tube S
3Drain electrode; Secondary circuit 20 comprises the first four-quadrant high frequency power switch S
D1, the second four-quadrant high frequency power switch S
D2, the 3rd four-quadrant high frequency power switch S
D3, filter inductance L
o, filter capacitor C
oWith load R
o, the first four-quadrant high frequency power switch S
D1An end connect the first secondary winding N
S1End of the same name, the first four-quadrant high frequency power switch S
D1The other end connect the second four-quadrant high frequency power switch S respectively
D2An end, the 3rd four-quadrant high frequency power switch S
D3An end and filter inductance L
oAn end, the second four-quadrant high frequency power switch S
D2The other end connect the second secondary winding N
S2End of the same name, the second secondary winding N
S2Non-same polarity connect the first secondary winding N respectively
S1Non-same polarity, the 3rd four-quadrant high frequency power switch S
D3The other end, filter capacitor C
oAn end and load R
oAn end, filter inductance L
oThe other end connect filter capacitor C respectively
oThe other end and load R
oThe other end.
In specific implementation process, has a numerous embodiments according to the implementation of the four-quadrant high frequency power switch of the power switch pipe of former limit circuit and secondary circuit is different, wherein: power switch pipe can adopt MOSFET or have the common IGBT of body diode in the circuit of former limit, Fig. 2 (a)～(d) has provided four kinds of implementations of four-quadrant high frequency power switch in the secondary circuit, and wherein: Fig. 2 (a) is the four-quadrant high frequency power switch that adopts common emitter formula structure to constitute by two MOSFET or common IGBT; Fig. 2 (b) is the four-quadrant high frequency power switch that adopts common collector formula structure to constitute by two MOSFET or common IGBT; Fig. 2 (c) is the four-quadrant high frequency power switch that adopts the inverse parallel structure to constitute by two inverse resistance type IGBT; Fig. 2 (d) is the four-quadrant high frequency power switch that is made of inverse resistance type IGBT and diode bridge structure.
Be that the four-quadrant high frequency power switch of secondary circuit adopts two MOSFET common emitter formula structures, all switching tubes shown in Fig. 2 (a) all to adopt the embodiment circuit theory diagrams of the single-stage forward type high-frequency linked inverter of MOSFET as shown in Figure 3.
Be the control principle and the concrete course of work that example illustrates this single-stage forward type high-frequency linked inverter with circuit shown in Figure 3 below:
The drive signal of switching tube is relatively obtained by control voltage and triangle wave voltage, the pwm control signal that switching tube and triangle wave voltage relatively obtain obtains two staggered normal shock cell operation of two-way pwm control signal control through frequency division, by control, make the on off state of switching tube satisfy following rule: at the positive half cycle of output voltage, switching tube S
1With S
3Staggered 180 ° of high frequency chopping work, S
2With S
4Drive signal remain 0, switching tube S
5As S
1Synchronous rectifier and S
1Open simultaneously and turn-off, S
7As S
3Synchronous rectifier and S
3Open simultaneously and turn-off, S
9As the action of synchronous freewheeling pipe HF switch, work as S
5With S
7When turn-offing simultaneously, S
9Conducting, otherwise S
9Turn-off S
6, S
8, S
10Conducting always; At the negative half period of output voltage, switching tube S
2With S
4Staggered 180 ° of high frequency chopping work, S
1With S
3Drive signal remain 0, switching tube S
6As S
2Synchronous rectifier and S
2Open simultaneously and turn-off, S
8As S
4Synchronous rectifier and S
4Open simultaneously and turn-off, S
10As the action of synchronous freewheeling pipe HF switch, work as S
6With S
8When turn-offing simultaneously, S
10Conducting, otherwise S
10Turn-off S
5, S
7, S
9Conducting always.
At the positive half cycle of sine wave output, transformer T
1With T
2In each switch periods, pass through S respectively
4With S
2Body diode finish magnetic reset; At the negative half period of sine wave output, transformer T
1With T
2In each switch periods, pass through S respectively
1With S
3Body diode finish magnetic reset.
Because inverter has the four-quadrant operation ability, therefore can be with perception, capacitive, resistive and rectified load.In cycle, inverter has the work of respectively corresponding four quadrants of four kinds of mode of operations at an output voltage, and the mode of operation of inverter order is different under the different loading conditions.
Fig. 4 is the main oscillogram of embodiment circuit under four kinds of mode of operations (A-D-C-B) shown in Figure 3 when zero load.
Below in conjunction with Fig. 4 and Fig. 5 the embodiment circuit shown in Figure 3 operation principle and the course of work under four kinds of mode of operations is described:
1. energy output mode (A, C)
Mode A (v
o＞0, i
o＞0)
In mode of operation A, power switch tube S
1, S
3Staggered 180 ° of high frequency chopping work, S
5, S
7Synchronous rectification, S
9Synchronous freewheeling, power switch tube S
2, S
4Drive signal is 0, S
4, S
6, S
8Conducting always, transformer T
1Pass through S
4Body diode finish magnetic reset, transformer T
2Pass through S
2Body diode finish magnetic reset.DC power supply V
InTo load R
oTransmission of power is shown in Fig. 5 (a).
Pattern C (v
o＜0, i
o＜0)
In mode of operation C, power switch tube S
2, S
4Staggered 180 ° of high frequency chopping work, S
6, S
8Synchronous rectification, S
10Synchronous freewheeling, power switch tube S
1, S
3Drive signal is 0, S
5, S
7, S
9Conducting always, transformer T
1Pass through S
1Body diode finish magnetic reset, transformer T
2Pass through S
3Body diode finish magnetic reset.DC power supply V
InTo load R
oTransmission of power is shown in Fig. 5 (b).
2. energy feedback pattern (B, D)
Mode B (v
o＜0, i
o＞0)
In mode of operation B, power switch tube S
6, S
8, S
10High frequency chopping work, S
2, S
4Synchronous rectification, power switch tube S
1, S
3Drive signal is 0, S
5, S
7, S
9Conducting always, transformer T
1Pass through S
1Body diode finish magnetic reset, transformer T
2Pass through S
3Body diode finish magnetic reset.Load R
oTo input power supply feedback energy, shown in Fig. 5 (b).
Pattern D (v
o＞0, i
o＜0)
In mode of operation D, power switch tube S
5, S
7, S
9High frequency chopping work, S
1, S
3Synchronous rectification, power switch tube S
2, S
4Drive signal is 0, S
4, S
6, S
10Conducting always, transformer T
1Pass through S
4Body diode finish magnetic reset, transformer T
2Pass through S
2Body diode finish magnetic reset.Load R
oTo input power supply feedback energy, shown in Fig. 5 (a).
When inverter band inductive load, the order of mode of operation is A-B-C-D; When inverter band capacitive load, the order of mode of operation is A-D-C-B.
Lower for output voltage, dividing potential drop electric capacity there is not the application scenario of specific (special) requirements, can use single-stage positive activation type semi-bridge type high-frequency chain inverter shown in Figure 6.Actual of having used in two bidirectional power flow forward converters of single-stage forward type high-frequency linked inverter shown in Figure 1 unit of this inverter, be applicable to mesolow output occasion, since only used wherein a road, the quantity of switching tube significantly reduces, greatly reduce cost.
Owing to only used a normal shock unit, therefore the dividing potential drop electric capacity of this inverter needs the voltage ripple of filtering output voltage frequency, with respect to single-stage forward type high-frequency linked inverter, it is big that the capacity of its dividing potential drop electric capacity and volume are wanted, in addition, under identical output voltage, the voltage stress of secondary-side switch pipe will double with respect to the secondary-side switch pipe of single-stage forward type high-frequency linked inverter, when adopting identical filter inductance and filter capacitor, the size of inductive current and capacitance voltage ripple also will double, but than the one pole forward type high-frequency linked inverter, the semi-bridge type high-frequency chain inverter nearly can reduce switching tube and the high frequency transformer of half, therefore reduced the cost of converter greatly, in addition, the characteristic of the characteristic of single-stage positive activation type semi-bridge type high-frequency chain inverter and single-stage forward type high-frequency linked inverter is just the same.
Claims (1)
1, a kind of single-stage forward type high-frequency linked inverter is characterized in that: comprise former limit circuit (10), the first high frequency transformer (T
1), the second high frequency transformer (T
2) and secondary circuit (20), wherein: former limit circuit (10) comprises DC power supply (V
In), the first dividing potential drop electric capacity (C
1) the second dividing potential drop electric capacity (C
2), the first power switch pipe (S
1), the second power switch pipe (S
2), the 3rd power switch pipe (S
3) and the 4th power switch pipe (S
4), DC power supply (V
In) positive pole connect the first dividing potential drop electric capacity (C respectively
1) an end, the first power switch pipe (S
1) the drain electrode and the second power switch pipe (S
2) drain electrode, DC power supply (V
In) negative pole connect the second dividing potential drop electric capacity (C respectively
2) an end, the 4th power switch pipe (S
4) source electrode and the 3rd power switch pipe (S
3) source electrode; First high frequency transformer (the T
1) comprise the first former limit winding (N
P1) and the first secondary winding (N
S1), the second high frequency transformer (T
2) comprise the second former limit winding (N
P2) and the second secondary winding (N
S2), the first former limit winding (N
P1) end of the same name connect the first power switch pipe (S respectively
1) source electrode and the 4th power switch pipe (S
4) drain electrode, the first former limit winding (N
P1) non-same polarity connect the second former limit winding (N respectively
P2) end of the same name, the first dividing potential drop electric capacity (C
1) the other end and the second dividing potential drop electric capacity (C
2) the other end, the second former limit winding (N
P2) non-same polarity connect the second power switch pipe (S respectively
2) source electrode and the 3rd power switch pipe (S
3) drain electrode; Secondary circuit (20) comprises the first four-quadrant high frequency power switch (S
D1), the second four-quadrant high frequency power switch (S
D2), the 3rd four-quadrant high frequency power switch (S
D3), filter inductance (L
o), filter capacitor (C
o) and load (R
o), the first four-quadrant high frequency power switch (S
D1) an end connect the first secondary winding (N
S1) end of the same name, the first four-quadrant high frequency power switch (S
D1) the other end connect the second four-quadrant high frequency power switch (S respectively
D2) an end, the 3rd four-quadrant high frequency power switch (S
D3) an end and filter inductance (L
o) an end, the second four-quadrant high frequency power switch (S
D2) the other end connect the second secondary winding (N
S2) end of the same name, the second secondary winding (N
S2) non-same polarity connect the first secondary winding (N respectively
S1) non-same polarity, the 3rd four-quadrant high frequency power switch (S
D3) the other end, filter capacitor (C
o) an end and load (R
o) an end, filter inductance (L
o) the other end connect filter capacitor (C respectively
o) the other end and load (R
o) the other end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101845076A CN101635530B (en) | 2009-08-28 | 2009-08-28 | Single-stage forward type high-frequency linked inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101845076A CN101635530B (en) | 2009-08-28 | 2009-08-28 | Single-stage forward type high-frequency linked inverter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101635530A true CN101635530A (en) | 2010-01-27 |
| CN101635530B CN101635530B (en) | 2011-05-04 |
Family
ID=41594617
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101845076A Expired - Fee Related CN101635530B (en) | 2009-08-28 | 2009-08-28 | Single-stage forward type high-frequency linked inverter |
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|---|---|
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| CN101841252A (en) * | 2010-05-11 | 2010-09-22 | 英伟力新能源科技(上海)有限公司 | Photovoltaic grid-connected inverter for active energy decoupling |
| CN104575989A (en) * | 2013-10-28 | 2015-04-29 | 三星电机株式会社 | Transformer, power supply device, and display device including the same |
| CN104917198A (en) * | 2015-06-08 | 2015-09-16 | 南车青岛四方机车车辆股份有限公司 | Energy storage system control device and method |
| CN105024567A (en) * | 2015-07-30 | 2015-11-04 | 华中科技大学 | Direct current switch type current source |
| CN105141167A (en) * | 2014-12-05 | 2015-12-09 | 艾思玛新能源技术（上海）有限公司苏州高新区分公司 | Interleaving phase-shift control method for photovoltaic inverter and photovoltaic inverter |
| CN105680715A (en) * | 2016-03-24 | 2016-06-15 | 南京工业大学 | Three-phase single-stage inverter |
| CN105703652A (en) * | 2016-03-01 | 2016-06-22 | 北京交通大学 | Control method of high-frequency isolation DC/AC inverter circuit and high-frequency isolation DC/AC inverter circuit |
| CN105703645A (en) * | 2016-03-01 | 2016-06-22 | 北京交通大学 | High-frequency isolation DC/AC inverter circuit and control method thereof |
| CN107171564A (en) * | 2017-07-02 | 2017-09-15 | 中国航空工业集团公司雷华电子技术研究所 | A kind of Active Clamped Forward Converters |
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| CN101841252B (en) * | 2010-05-11 | 2012-11-07 | 盈威力新能源科技(上海)有限公司 | Photovoltaic grid-connected inverter for active energy decoupling |
| CN101841252A (en) * | 2010-05-11 | 2010-09-22 | 英伟力新能源科技(上海)有限公司 | Photovoltaic grid-connected inverter for active energy decoupling |
| CN104575989A (en) * | 2013-10-28 | 2015-04-29 | 三星电机株式会社 | Transformer, power supply device, and display device including the same |
| CN105141167B (en) * | 2014-12-05 | 2019-05-03 | 爱士惟新能源技术(扬中)有限公司 | A kind of photovoltaic DC-to-AC converter interlocks the control method and photovoltaic DC-to-AC converter of phase shift |
| CN105141167A (en) * | 2014-12-05 | 2015-12-09 | 艾思玛新能源技术（上海）有限公司苏州高新区分公司 | Interleaving phase-shift control method for photovoltaic inverter and photovoltaic inverter |
| CN104917198A (en) * | 2015-06-08 | 2015-09-16 | 南车青岛四方机车车辆股份有限公司 | Energy storage system control device and method |
| CN105024567A (en) * | 2015-07-30 | 2015-11-04 | 华中科技大学 | Direct current switch type current source |
| CN105703652A (en) * | 2016-03-01 | 2016-06-22 | 北京交通大学 | Control method of high-frequency isolation DC/AC inverter circuit and high-frequency isolation DC/AC inverter circuit |
| CN105703645A (en) * | 2016-03-01 | 2016-06-22 | 北京交通大学 | High-frequency isolation DC/AC inverter circuit and control method thereof |
| CN105680715A (en) * | 2016-03-24 | 2016-06-15 | 南京工业大学 | Three-phase single-stage inverter |
| CN107171564A (en) * | 2017-07-02 | 2017-09-15 | 中国航空工业集团公司雷华电子技术研究所 | A kind of Active Clamped Forward Converters |
| CN109756145A (en) * | 2017-11-03 | 2019-05-14 | 施耐德电气It公司 | DC-AC bidirectional transducer |
| CN109756145B (en) * | 2017-11-03 | 2024-03-19 | 施耐德电气It公司 | DC-AC bidirectional converter |
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