CN106992703A - Using the parallel three-level inverter circuit of carrier pulse modulation technique - Google Patents
Using the parallel three-level inverter circuit of carrier pulse modulation technique Download PDFInfo
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- CN106992703A CN106992703A CN201710291882.5A CN201710291882A CN106992703A CN 106992703 A CN106992703 A CN 106992703A CN 201710291882 A CN201710291882 A CN 201710291882A CN 106992703 A CN106992703 A CN 106992703A
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- inverter circuit
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- inverter
- circuit
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/493—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode the static converters being arranged for operation in parallel
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/483—Converters with outputs that each can have more than two voltages levels
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
- H02M7/53871—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
The invention discloses a kind of parallel three-level inverter circuit of use carrier pulse modulation technique, the inverter circuit includes：Bleeder circuit, multiple three-phase tri-level inverters, current detection circuit, controller and drive module.Direct current energy after partial pressure is converted to AC energy by the present invention under the driving of drive module respectively by multiple three-phase tri-level inverters, the feedback current that controller is detected according to current detection circuit generates drive signal, and send the drive signal to the drive module, it is limited in one's ability so as to avoid single grid-connected inverters output current, switching frequency need not be increased, reduce the loss to device, avoid and the stability and security of grid-connection control system are threatened, in addition, it inductance value need not be increased still can reach and filter out ripple harmonic, the volume and cost of inverter circuit will not be increased.
Description
Technical field
The present invention relates to parallel three level of technical field of power generation, more particularly to a kind of use carrier pulse modulation technique
Inverter circuit.
Background technology
Generation of electricity by new energy turns into instantly popular trend, and the clean energy resource such as photovoltaic, wind-force is inexhaustible, pollutes small spy
Point, country's substantial increase photovoltaic installed capacity, some photovoltaic inversion devices or other distributed power source Parallel Operation on Power System
Harmonic effects are very big, and single grid-connected inverters output current is limited in one's ability, and current ripples are inversely proportional with device for power switching frequency,
Switching frequency will be increased by reducing ripple, and the loss to device accordingly increases, and easily cause the stabilization for threatening grid-connection control system
Property and security.
With the raising of combining inverter power, output current increase, original inductor will suitably increase by contrast
Big inductance value can be only achieved the effect for filtering out ripple harmonic, but can increase inverter volume, while increasing cost.
The above is only used for auxiliary and understands technical scheme, does not represent and recognizes that the above is existing skill
Art.
The content of the invention
It is a primary object of the present invention to provide a kind of parallel tri-level inversion electricity of use carrier pulse modulation technique
Road, it is intended to solve the presence of the stability and security for threatening grid-connection control system in the prior art, and increase inverter volume
With the technical problem of cost.
To achieve the above object, the present invention provides a kind of parallel tri-level inversion electricity of use carrier pulse modulation technique
Road, the inverter circuit includes：Equalizer circuit, multiple three-phase tri-level inverters, current detection circuit, controller and driving mould
Block；
The equalizer circuit, carries out pressure for the direct current energy to input and handles, obtain DC side central point position, described
DC side central point position is connected with the N lines of AC；
Each three-phase tri-level inverter parallel, is respectively used to the direct current after the processing of pressure under the driving of drive module
AC energy can be converted to；
The current detection circuit, the current value for detecting the AC energy, and using the current value of detection as anti-
Supply current；
The controller, for generating drive signal according to the feedback current, and the drive signal is sent to institute
State drive module.
Preferably, the equalizer circuit includes：The electric capacity of two series connection, it is passive that each electric capacity is parallel with resistance identical respectively
Device.
Preferably, the three-phase tri-level inverter has two, and is connected in parallel on DC side respectively；
Preferably, the inverter circuit also includes：Filter outputting inductance；
The filtering outputting inductance, for being filtered to the AC energy, and filtered AC energy is exported.
Preferably, the filtering outputting inductance includes：Two groups from inductor and one group of total inductance device, it is described from inductor point
Dui Yingyu not the three-phase tri-level inverter；
Each group is connected from the first end of inductor and the output end of corresponding three-phase tri-level inverter, and each group is from inductor
The second end be connected with the first end of the total inductance device.
Preferably, first end of the second end and each group of the current detection circuit and the total inductance device from inductor
Connect respectively.
Preferably, each three-phase tri-level inverter includes multiple bridge arms respectively, and it is double that each bridge arm includes four insulated gates respectively
Bipolar transistor IGBT.
Preferably, the corresponding bridge arm between the three-phase tri-level inverter is connected in parallel, the drive between corresponding bridge arm
The carrier phase of dynamic signal is opposite and modulating wave is identical.
The present invention is respectively converted to direct current energy under the driving of drive module by multiple three-phase tri-level inverters
AC energy, the feedback current that controller is detected according to current detection circuit generates drive signal, and by the drive signal
Send to the drive module, so that it is limited in one's ability to avoid single grid-connected inverters output current, without increasing switching frequency,
The loss to device is reduced, it is to avoid stability and security to grid-connection control system threaten, in addition, without increase
Inductance value, which still can reach, filters out ripple harmonic, will not increase the volume and cost of inverter circuit.
Brief description of the drawings
Fig. 1 is the first embodiment of the parallel three-level inverter circuit of the use carrier pulse modulation technique of the present invention
Structured flowchart；
Fig. 2 is the total topology block diagram of the parallel three-level inverter of the embodiment of the present invention；
Fig. 3 is four triangular carrier generation figures of the embodiment of the present invention；
Fig. 4 is phase-shifting carrier wave modulation signal between carrier wave stacking modulation and parallel arm on the same bridge arm of the embodiment of the present invention
Figure；
Fig. 5 is the closed-loop current control figure of the embodiment of the present invention.
The realization, functional characteristics and advantage of the object of the invention will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
Reference picture 1, it is inverse that first embodiment of the invention provides a kind of parallel three level of use carrier pulse modulation technique
Become circuit, the inverter circuit includes：Equalizer circuit, multiple three-phase tri-level inverters, current detection circuit, controller and drive
Dynamic model block；
The equalizer circuit, carries out pressure for the direct current energy to input and handles, obtain DC side central point position, described
DC side central point position is connected with the N lines of AC；
Each three-phase tri-level inverter parallel, is respectively used to the direct current after the processing of pressure under the driving of drive module
AC energy can be converted to；
The current detection circuit, the current value for detecting the AC energy, and using the current value of detection as anti-
Supply current；
The controller, for generating drive signal according to the feedback current, and the drive signal is sent to institute
State drive module.
The present embodiment is respectively changed direct current energy under the driving of drive module by multiple three-phase tri-level inverters
For AC energy, the feedback current that controller is detected according to current detection circuit generates drive signal, and by the drive signal
Send to the drive module, so that it is limited in one's ability to avoid single grid-connected inverters output current, without increasing switching frequency,
The loss to device is reduced, it is to avoid stability and security to grid-connection control system threaten, in addition, without increase
Inductance value, which still can reach, filters out ripple harmonic, will not increase the volume and cost of inverter circuit.
For ease of ensureing voltage equalizing, reference picture 2, the equalizer circuit includes：The electric capacity of two series connection, each electric capacity difference
It is parallel with resistance identical passive device.
For ease of being changed to the direct current energy, in the present embodiment, the three-phase tri-level inverter has two,
And DC side is connected in parallel on respectively；
For ease of being filtered to the alternating current, in the present embodiment, the inverter circuit also includes：Filtering output electricity
Sense；
The filtering outputting inductance, for being filtered to the AC energy, and filtered AC energy is exported.
Be filtered respectively for ease of the AC power to the conversion of two three-phase tri-level inverters, and to converging after friendship
Stream power supply is filtered again, in the present embodiment, and the filtering outputting inductance includes：Two groups from inductor and one group of total inductance
Device, it is described to correspond respectively to the three-phase tri-level inverter from inductor；
Each group is connected from the first end of inductor and the output end of corresponding three-phase tri-level inverter, and each group is from inductor
The second end be connected with the first end of the total inductance device.
For ease of being detected from the electric current of inductor input, and the electric current of total inductance device output end is detected,
The current detection circuit is connected respectively with the second end of the total inductance device and each group from the first end of inductor.
In the specific implementation, each three-phase tri-level inverter includes multiple bridge arms respectively, each bridge arm includes four absolutely respectively
Edge grid bipolar transistor IGBT, four IGBT are connected in series, and are connected in parallel between multiple bridge arms.
Correspondingly, the corresponding bridge arm between the three-phase tri-level inverter is connected in parallel, the drive between corresponding bridge arm
The carrier phase of dynamic signal opposite (i.e. phase differs 180 °) and modulating wave is identical, due to using phase-shifting carrier wave between parallel connection bridge arm,
The current ripples amplitude of each parallel connection bridge arm connection inductor output is equal, and phase is caused by carrier phase difference on the contrary, therefore in parallel
What bridge arm output collected cancels out each other to current ripples on total inductance device.
Switching frequency be equivalent to current ripples on twice of single inverter, total inductance device and IGBT switching frequency and
Inductive drop △ uL are relevant, ripple frequency proximity switch frequency, then total output current ripple switching frequency compares single three level
Inverter switching frequency is much higher, and the cut-off frequency of filter inductance is far below the shunt chopper using phase-shifting carrier wave by contrast
Switching frequency, therefore inductance ripple current attenuation is big, and the ripple current for being output to power network is many less.
Modulated in addition, can use four IGBT on bridge arm between carrier wave lamination techniques, bridge arm in parallel using phase-shifting carrier wave
Output current switch frequency is improved, closed-loop current control, each shunt chopper are used after being sampled for whole inverter current
Closed-loop current control is carried out, the identical bridge arm output end of shunt chopper is connected respectively synthesizes one as output after inductor
It is connected with net side bus by total inductance device, this parallel three-level inverter is subject to closed-loop current control, reduces parallel connection
Circulation of the inverter caused by parallel, and inverter equivalent switching frequency is significantly improved, suppress the inversion after harmonic wave, furthermore parallel connection
Device output current is significantly improved, and ripple reduces.
Reference picture 2, the single bridge arm outlet side inductor of two inverters in parallel be connected again by total inductance device with exchange
Net side is connected, and it is respectively the three-phase alternating current output point of inverter 1, the three-phase alternating current output point of inverter 2 to have three current sampling points
And alternating current net side feeder line.Three portion of electrical current pass through current detection circuit 1, current detection circuit 2 and current detection circuit 3 respectively
Sampling, and transmit to controller, the controller uses programmable hardware logical device (FPGA), and FPGA mainly completes three-phase tune
Ripple generation processed, four triangular waves generation that three-level inverter phase-shifting carrier wave in parallel is used, and two each bridges of inverter of control
The IGBT of arm pwm signal generation.
It is illustrated in figure 3 four triangular carrier generation figures of A phases.Triangular carrier 1 is same phase with 2, is translated in Y-axis, triangle
The phase shift T/N of carrier wave 1 obtains triangular carrier 3, using two unit parallel connection N=2, and it is 180 °, triangle to obtain the phase shifting angle of triangular carrier 3
180 ° of 2 phase shift of carrier wave obtains triangular carrier 4.
As shown in figure 4, containing four switching device IGBT in the single bridge arm of three-level inverter, according to three-level control principle
Strategy, turn-on and turn-off mode is turned on for 1 and 2 pipes, the shut-off of 3 and 4 pipes, or the conducting of 2 and 3 pipes, and the shut-off of 1 and 4 pipes, or 1 and 2 pipes are closed
Disconnected, 3 and 4 pipes are open-minded.The present embodiment of use carrier wave stacking in to(for) four IGBT on A phase bridge arms is modulated, it is necessary to two triangles
Carrier wave.Pipe 1 and pipe 3 are a pair of complementation PWM ripples, and pipe 2 and pipe 4 are a pair of complementation PWM ripples, and the modulated signal of the bridge arm is identical.Three
Angle carrier wave 1 is identical with 2 frequencies, phase, and amplitude is translated in Y-axis.Triangular carrier 1 and modulating wave compare generation complementary PWM signals
Difference driving tube 1 and pipe 3, triangular carrier 2 and modulating wave compare generation complementary PWM signals difference driving tube 2 and pipe 4.It is in parallel inverse
Become device A phases bridge arm to be equally laminated using carrier wave, using two-way with mutually stacking triangular wave, but triangular carrier 3 is on the basis of triangular carrier 1
Upper 180 ° of phase shift, 180 ° of phase shift on the basis of triangular carrier 2 of triangular carrier 4, triangular carrier 3 and modulating wave compare generation two
The pipe 1 and pipe 3 of road PWM controls bridge arm in parallel, triangular carrier 4 and modulating wave compare the pipe 2 of generation two-way PWM controls bridge arm in parallel
With pipe 4, between bridge arm in parallel for phase-shifting carrier wave modulate.B phases and the C bridge arm that is in parallel are adjusted using B phases modulating wave with C phases respectively
Ripple processed is compared 8 IGBT for obtaining pwm signal driving B phases and C phases with triangular carrier.
The ripple of inverter output current is relevant with pressure drop △ U on switching frequency f and inductance,
△ U=U1-USsin (wt+ Φ), △ U=L*di/t, USsin (wt+ Φ) are voltage on line side, and U1 is inverter electricity
Voltage before sensor, embodiment uses tri-level inversion technology, and it is U/2,0 ,-U/2 to make AN current potentials, than two level output U ,-U
The small U/2 of voltage, then three level U1=U/2, two level U1=U.Then di/t phases of the three level △ U=L*di/t under same inductance
To smaller, electric current output ripple is smaller than two level, it is in parallel after use phase-shifting carrier wave, the output current ripple of inverter 1 and inverter 2
Output ripple amplitude is equal, opposite in phase, and the current ripples that output point is convergeed on total inductance device are cancelled out each other, and reduces inverter
Output current ripple.
As shown in figure 5, feedback current IfObtained by current sample module samples, make abc-dq changes to voltage on line side and obtain
With the phase angle of voltage on line side same-phase, real-time tracking locking net side phase gives inverter output current instruction amplitude, with net
Side phase angle is multiplied by multiplier obtains instruction current signal, with feedback current IfMake the difference, adjust Proportional coefficient K P, adjusted
Ripple processed.
It should be noted that herein, term " comprising ", "comprising" or its any other variant are intended to non-row
His property is included, so that process, method, article or system including a series of key elements not only include those key elements, and
And also including other key elements being not expressly set out, or also include for this process, method, article or system institute inherently
Key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that including this
Also there is other identical element in process, method, article or the system of key element.
The embodiments of the present invention are for illustration only, and the quality of embodiment is not represented.
The preferred embodiments of the present invention are these are only, are not intended to limit the scope of the invention, it is every to utilize this hair
Equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (8)
1. a kind of parallel three-level inverter circuit of use carrier pulse modulation technique, it is characterised in that the inverter circuit
Including：Equalizer circuit, multiple three-phase tri-level inverters, current detection circuit, controller and drive module；
The equalizer circuit, carries out pressure for the direct current energy to input and handles, obtain DC side central point position, the direct current
Side central point position is connected with the N lines of AC；
Each three-phase tri-level inverter parallel, is respectively used under the driving of drive module turn the direct current energy after the processing of pressure
It is changed to AC energy；
The current detection circuit, the current value for detecting the AC energy, and it regard the current value of detection as feedback electricity
Stream；
The controller, drives for generating drive signal according to the feedback current, and the drive signal being sent to described
Dynamic model block.
2. inverter circuit as claimed in claim 1, it is characterised in that the equalizer circuit includes：The electric capacity of two series connection, respectively
Electric capacity is parallel with resistance identical passive device respectively.
3. inverter circuit as claimed in claim 2, it is characterised in that the three-phase tri-level inverter has two, and divides
DC side is not connected in parallel on it.
4. inverter circuit as claimed in claim 3, it is characterised in that the inverter circuit also includes：Filter outputting inductance；
The filtering outputting inductance, for being filtered to the AC energy, and filtered AC energy is exported.
5. inverter circuit as claimed in claim 4, it is characterised in that the filtering outputting inductance includes：Two groups from inductor
With one group of total inductance device, it is described to correspond respectively to the three-phase tri-level inverter from inductor；
Each group is connected from the first end of inductor and the output end of corresponding three-phase tri-level inverter, each group from inductor the
Two ends are connected with the first end of the total inductance device.
6. inverter circuit as claimed in claim 4, it is characterised in that the of the current detection circuit and the total inductance device
Two ends and each group are connected respectively from the first end of inductor.
7. inverter circuit as claimed in claim 3, it is characterised in that each three-phase tri-level inverter includes multiple bridges respectively
Arm, each bridge arm includes four insulated gate bipolar transistor IGBTs respectively.
8. inverter circuit as claimed in claim 7, it is characterised in that the corresponding bridge arm between the three-phase tri-level inverter
It is connected in parallel, the carrier phase of the drive signal between corresponding bridge arm is opposite and modulating wave is identical.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710291882.5A CN106992703A (en) | 2017-04-26 | 2017-04-26 | Using the parallel three-level inverter circuit of carrier pulse modulation technique |
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| CN201710291882.5A CN106992703A (en) | 2017-04-26 | 2017-04-26 | Using the parallel three-level inverter circuit of carrier pulse modulation technique |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109245159A (en) * | 2018-10-10 | 2019-01-18 | 东莞理工学院 | One kind being suitable for micro-capacitance sensor multi-inverter parallel system |
| CN112187075A (en) * | 2020-11-05 | 2021-01-05 | 武汉理工大学 | Three-phase four-bridge arm inverter interference pulse width modulation system and method |
| WO2022252208A1 (en) * | 2021-06-04 | 2022-12-08 | 华为数字能源技术有限公司 | Power source system and power source system control method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0515166A (en) * | 1991-07-04 | 1993-01-22 | Mitsubishi Electric Corp | Pulse width modulation system for parallel multiplex inverter |
| CN103296907A (en) * | 2012-03-02 | 2013-09-11 | 台达电子企业管理（上海）有限公司 | Multilevel inverter and active power filter system |
| WO2014206092A1 (en) * | 2013-06-24 | 2014-12-31 | 华为技术有限公司 | Single-phase inverter and three-phase inverter |
-
2017
- 2017-04-26 CN CN201710291882.5A patent/CN106992703A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0515166A (en) * | 1991-07-04 | 1993-01-22 | Mitsubishi Electric Corp | Pulse width modulation system for parallel multiplex inverter |
| CN103296907A (en) * | 2012-03-02 | 2013-09-11 | 台达电子企业管理（上海）有限公司 | Multilevel inverter and active power filter system |
| WO2014206092A1 (en) * | 2013-06-24 | 2014-12-31 | 华为技术有限公司 | Single-phase inverter and three-phase inverter |
Non-Patent Citations (3)
| Title |
|---|
| 宋治楷;胥飞;王恒;: "基于下垂控制的三电平逆变器并联技术仿真研究" * |
| 张明锐;宋柏慧;林显琦;欧阳丽;孙华;: "直接并联模块化逆变器零序环流抑制" * |
| 王海欣;黄海宏;高格;傅鹏;: "载波移相在大容量并联逆变电源中的应用" * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109245159A (en) * | 2018-10-10 | 2019-01-18 | 东莞理工学院 | One kind being suitable for micro-capacitance sensor multi-inverter parallel system |
| CN109245159B (en) * | 2018-10-10 | 2020-05-01 | 东莞理工学院 | Multi-inverter parallel system suitable for micro-grid |
| CN112187075A (en) * | 2020-11-05 | 2021-01-05 | 武汉理工大学 | Three-phase four-bridge arm inverter interference pulse width modulation system and method |
| WO2022252208A1 (en) * | 2021-06-04 | 2022-12-08 | 华为数字能源技术有限公司 | Power source system and power source system control method |
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