CN105553249B - Wide-voltage range low voltage stress current-injecting three-phase power factor correcting circuit - Google Patents
Wide-voltage range low voltage stress current-injecting three-phase power factor correcting circuit Download PDFInfo
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- CN105553249B CN105553249B CN201610001646.0A CN201610001646A CN105553249B CN 105553249 B CN105553249 B CN 105553249B CN 201610001646 A CN201610001646 A CN 201610001646A CN 105553249 B CN105553249 B CN 105553249B
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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
- H02M1/00—Details of apparatus for conversion
- H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
- H02M1/4208—Arrangements for improving power factor of AC input
- H02M1/4233—Arrangements for improving power factor of AC input using a bridge converter comprising active switches
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Engineering & Computer Science (AREA)
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Abstract
The present invention relates to a kind of wide-voltage range low voltage stress current-injecting three-phase power factor correcting circuits, according to input voltage working range, circuit is operable with boost patterns, is also operable with buck patterns, the voltage stress of switching tube is than directly using typical buck topology（buck‑boost、cuk、sepic、zeta）It is small, there is higher conversion efficiency.The converter of the present invention controls the corresponding phase voltage of current tracking of maximum, the minimum phase of input voltage instantaneous value respectively；According to three-phase symmetrical, in addition a phase current also follows its phase voltage, to realize that three-phase current sineization controls.By operating mode stage by stage, output voltage can rise to drop the circuit, input and output voltage can working range it is big, be suitable for the big application scenario of input and output voltage variation range.The present invention is without complicated vector controlled, as long as using DC/DC PWM control technologies, so that it may to realize three-phase input current positizing string, it is easy to accomplish.
Description
Technical field
The present invention relates to a kind of wide-voltage range low voltage stress current-injecting three-phase power factor correcting circuits.
Background technology
The harmonic current of net side input can lead to the normal work that power-supply system utilization rate is low, big influence electrical equipment is lost
Make or even jeopardize the stable operation of entire power grid, harmonic wave control increasingly obtains the attention of academia and national governments, put into effect
Many harmonic limit standards carry out the harmonic content of specification electrical equipment.Such as IEC61000-3-2, the standards such as GB17625.1 are bright
The really Harmonic Current Limits of regulation electronic equipment, only meeting the electronic equipment of code requirement just allows to list.
The large power-consuming equipment of 5 kilowatts or more power electrical equipment generally use three phase supplies, the harmonic pollution of generation
Greatly, PFC technologies do not obtain universal application but, and the development for being mostly derived from three-phase PFC technologies is not mature enough, is in practical application
Structure of uniting and control are complicated, realize difficult.Most common three-phase pfc circuit structure is PWM rectifier, can be divided into two major classes：Electricity
Die mould PWM rectifier and current-type PWM converter.The former is boost type arrangement, and output DC voltage need to be more than three-phase input line
The peak value of voltage, device voltage stress are big.For domestic Ull=380V（European 400V）Commercial power, output DC voltage are general
Reach 700 ~ 800V；The 480V of north America region（Or 600V）Power is powered, output voltage higher.Current-type PWM converter is drop
Pressure-type structure, output voltage.The VIENNA rectifier occurred in recent years is boost configuration, SWISS rectifiers
For buck configuration, the most three-phase pfc circuits being currently known are single boost or depressurization structure, and part has lifting
Press the three-phase pfc circuit device voltage stress of function excessive, control is complicated, and practical application is difficult.In output voltage not above-mentioned
Range or the big application scenario of input and output voltage variation range, the circuit of single boost or depressurization function cannot be satisfied
It is required that.
Invention content
In view of this, the purpose of the present invention is to provide a kind of wide-voltage range low voltage stress current-injecting three-phase work(
Rate factor correcting circuit solves liter that output voltage can only be single or drop and available circuit device voltage stress is excessive asks
Topic.
To achieve the above object, the present invention adopts the following technical scheme that：A kind of wide-voltage range low voltage stress electric current note
Enter type three-phase power factor correcting circuit, it is characterised in that：Including three-phase alternating current input power Uin, three-phase commutation bridge DB1, work(
Rate MOSFET pipes S1, power MOSFET tube S2, power MOSFET tube S3, power MOSFET tube S4, diode D1, diode D2,
Diode D3, harmonic current injection network, inductance L1, inductance L2, output filter capacitor Cf and load；The harmonic current injection
Network includes two-way switch Sy1, two-way switch Sy2 and two-way switch Sy3；Three of the three-phase alternating current input power Uin are defeated
Enter phase voltage to connect with three input terminals of three-phase commutation bridge DB1 respectively, three inputs of the three-phase alternating current input power Uin
Phase voltage is also connect with one end of one end of two-way switch Sy1, one end of two-way switch Sy2, two-way switch Sy3 respectively；It is described
The other end of the other end of two-way switch Sy1, the other end of two-way switch Sy2 and two-way switch Sy3 is connected in decanting point Y；Institute
The positive output end for stating three-phase commutation bridge DB1 is connect with the drain electrode of power MOSFET tube S1, the negative output of the three-phase commutation bridge DB1
End is connect with the source electrode of power MOSFET tube S2；The one of the source electrode of power MOSFET tube S1 and the cathode of diode D1 and inductance L1
End connection, the drain electrode of power MOSFET tube S2 are connect with one end of the anode of diode D2 and inductance L2；The other end of inductance L1
It is connect with the anode of the drain electrode of power MOSFET tube S3 and diode D3, the source of the other end and power MOSFET tube S4 of inductance L2
One end connection of pole, the cathode of output filter capacitor Cf and load RL, the cathode and output filter capacitor Cf of diode D3 are just
Pole and the other end connection for loading RL；The source electrode and work(of the anode of diode D1, the cathode of diode D2, power MOSFET tube S3
The drain electrode of rate MOSFET pipes S4 is connected and the decanting point Y.
Further, the power MOSFET tube S1 and power MOSFET tube S2 or be IGBT power switch tubes.
Further, the power MOSFET tube S3 and power MOSFET tube S4 or restore power diode soon for inverse parallel
IGBT power switch tubes.
Further, the diode D1, diode D2, diode D3 are fast recovery power diodes.
Further, the two-way switch Sy1, two-way switch Sy2 and two-way switch Sy3 by two power MOSFET tubes or
Two IGBT pipe differential concatenations form.
Further, the operating mode of the inductance L1 and inductance L2 is continuous current mode CCM, discontinuous current mode
DCM or critical current mode BCM.
Further, the output filter capacitor Cf is energy storage electrolytic capacitor.
The present invention has the advantages that compared with prior art：
1, the present invention is by different circuit work stage by stage, and output voltage, which can rise, to drop, input and output voltage working range
Greatly, more suitable for the big application scenario of input and output voltage variation range；
2, switch tube voltage stress of the invention is small, and any stage, is only operated in high frequency state there are two switching tube, opens
It is smaller to close loss, is conducive to improved efficiency；
3, the present invention is without complicated vector controlled, as long as using DC/DC PWM control technologies, so that it may to realize that three-phase is defeated
Enter electric current positizing string, it is easy to accomplish.
Description of the drawings
Fig. 1 is the specific implementation circuit diagram of the present invention.
Fig. 2 is the sequence diagram of the drive signal and three-phase input power supply of three two-way switch of the present invention.
Fig. 3 is voltage and current waveform of the present invention in steady operation.
Fig. 4 be the present invention section 1., equivalent circuit diagram when boost operating modes.
Fig. 5 is the simplified electrical circuit diagram of Fig. 4.
Fig. 6 a be the present invention section 1., the current path figure in stage 1 when boost operating modes.
Fig. 6 b be the present invention section 1., the current path figure in stage 2 when boost operating modes.
Fig. 6 c be the present invention section 1., the current path figure in stage 3 when boost operating modes.
Fig. 6 d be the present invention section 1., the current path figure in stage 4 when boost operating modes.
Fig. 7 be the present invention section 1., equivalent circuit diagram when buck operating modes.
Fig. 8 is the simplified electrical circuit diagram of Fig. 7.
Fig. 9 a be the present invention section 1., the current path figure in stage 1 when buck operating modes.
Fig. 9 b be the present invention section 1., the current path figure in stage 2 when buck operating modes.
Fig. 9 c be the present invention section 1., the current path figure in stage 3 when buck operating modes.
Fig. 9 d be the present invention section 1., the current path figure in stage 4 when buck operating modes.
Specific implementation mode
The present invention will be further described with reference to the accompanying drawings and embodiments.
Fig. 1 is please referred to, the present invention provides a kind of wide-voltage range low voltage stress current-injecting three-phase activity coefficient school
Positive circuit, it is characterised in that：Including three-phase alternating current input power Uin, three-phase commutation bridge DB1, power MOSFET tube S1, power
MOSFET pipes S2, power MOSFET tube S3, power MOSFET tube S4, diode D1, diode D2, diode D3, harmonic current
Injection network, inductance L1, inductance L2, output filter capacitor Cf and load；The harmonic current injection network includes two-way switch
Sy1, two-way switch Sy2 and two-way switch Sy3；Three of three-phase alternating current input power Uin input phase voltages are respectively with three
Three input terminals of commutating phase bridge DB1 connect, three input phase voltages of the three-phase alternating current input power Uin also respectively with it is double
It is connected to one end of one end of switch Sy1, one end of two-way switch Sy2, two-way switch Sy3；The two-way switch Sy1's is another
The other end at end, the other end of two-way switch Sy2 and two-way switch Sy3 is connected in decanting point Y；The three-phase commutation bridge DB1's
Positive output end is connect with the drain electrode of power MOSFET tube S1, the negative output terminal and power MOSFET tube of the three-phase commutation bridge DB1
The source electrode of S2 connects；The source electrode of power MOSFET tube S1 is connect with one end of the cathode of diode D1 and inductance L1, power
The drain electrode of MOSFET pipes S2 is connect with one end of the anode of diode D2 and inductance L2；The other end of inductance L1 and power MOSFET
The drain electrode of pipe S3 and the anode connection of diode D3, the other end of inductance L2 are filtered with the source electrode of power MOSFET tube S4, output
The cathode of capacitance Cf and one end connection for loading RL, the cathode of diode D3 and the anode of output filter capacitor Cf and load RL's
The other end connects；The anode of diode D1, the cathode of diode D2, the source electrode of power MOSFET tube S3 and power MOSFET tube S4
Drain electrode be connected with the decanting point Y.
Power MOSFET tube S1, power MOSFET tube S2, diode D1, diode D2 in Fig. 1, it is inductance L1, inductance L2, defeated
Go out filter capacitor Cf and constitutes two buck circuits；Power MOSFET tube S3, power MOSFET tube S4, diode D3, inductance L1, electricity
Feel L2, output filter capacitor Cf constitutes two boost circuits.
In this present embodiment, the power MOSFET tube S1 and power MOSFET tube S2 or be IGBT power switch tubes.
In this present embodiment, the power MOSFET tube S3 and power MOSFET tube S4 or restore power two soon for inverse parallel
The IGBT power switch tubes of pole pipe.
In this present embodiment, the diode D1, diode D2, diode D3 are fast recovery power diodes.
In this present embodiment, the two-way switch Sy1, two-way switch Sy2 and two-way switch Sy3 are by two power MOSFET
Pipe or two IGBT pipe differential concatenations form.
In this present embodiment, the operating mode of the inductance L1 and inductance L2 is continuous current mode CCM, inductive current breaks
Continuous DCM or critical current mode BCM.
In this present embodiment, the output filter capacitor Cf is energy storage electrolytic capacitor.
It is the drive signal and three-phase input power supply of the switching tube of the harmonic current injection network of the present invention as shown in Figure 2
Sequence diagram.The relationship of the control signal and three-phase input voltage instantaneous value of three two-way switch Sy1, Sy2, Sy3, injection branch
Two-way switch works in twice of supply frequency, belongs to low frequency operation power switch tube.One AC mains cycle is divided into 6 areas
Between, each section is 60 °, and in each section, that corresponding two-way switch of three-phase input voltage absolute value minimum is led
It is logical.Voltage current waveform when Fig. 3 is steady operation, u pY、u YnFor the piecewise combination of line voltage, it is similar to triangular wave.Below
Analysis by section 1. for, respectively analyze boost patterns and buck patterns detailed operation.This section c phase voltages are exhausted
It is minimum to value, two-way switch Sy3 conductings, Sy1, Sy2 shutdown.The positive maximum of a phase voltages,u pN=u aN, the negative minimum of b phase voltages,u nN=u bN.It can thus be appreciated thatu pn=u ab,u pY=u ac,u Yn=u cb,u pn=u ab。
One：Boost patterns
When three phase rectifier output voltageu pn<U oWhen, circuit works in boost patterns.With reference to attached drawing 4, power at this time
MOSFET pipes S1, S2 are held on, and the work of power MOSFET tube S3, S4 HF switch, simple equivalent circuit is as shown in figure 5, arrow
Head indicates the reference positive direction of each state variable.S3, S4 control signal and use trailing edge modulation, i.e., when each switch periods originate
It carves, while open-minded.
（1）S3, S4 are simultaneously turned on, equivalent circuit such as Fig. 6 a.Voltageu pY=u ac, it is added on L1；Voltageu Yn=u cb, it is added in L2
On；i L1、i L2Increase.D3 is reverse-biased, and RL is all by capacitance C for loadfPower supply.
（2）S3 conductings, S4 shutdowns, equivalent circuit such as Fig. 6 b.S3 is connected,i L1Increase；i L2Pass through S3（Wheni L2>i L1When, lead to
Cross S3 parasitic diodes）, D3 continuous current discharge electricities, in back-pressure（U o-u Yn）Effect is lower to be reduced.
（3）S3 shutdowns, S4 conductings, equivalent circuit such as Fig. 6 c.S4 is connected,i L2Increase；i L1Pass through S4（Wheni L1>i L2When, lead to
Cross S4 parasitic diodes）, D3 continuous current discharge electricities, in back-pressure（U o-u pY）Effect is lower to be reduced.
（4）S3, S4 are simultaneously turned off, equivalent circuit such as Fig. 6 d.The three kinds of situations in circuit point are actually turned on, a) S3, S4 are closed simultaneously
The disconnected moment,i L1>i L2, theni Y<0, S4 parasitic diode Ds4 conductings,i L2 u YnContinue to increase under effect,i L1In back-pressure（U o-u pY）Effect is lower to be reduced.If before the arrival of next switch periodsi L1=i L2, then S3, S4 parasitic diode are all obstructed,i Y=0,i L1、i L2Afterflow reduces together.B) S3, S4 simultaneously turn off the moment,i L1<i L2, theni Y>0, S3 parasitic diode Ds3 conductings,i L1 u pYContinue to increase under effect,i L2In back-pressure（U o-u Yn）Effect is lower to be reduced.If before the arrival of next switch periodsi L1=i L2, then S3, S4 parasitic diode are all obstructed,i Y=0,i L1、i L2Afterflow reduces together.C) S3, S4 simultaneously turn off the moment,i L1=i L2, then it is all obstructed to be directly transferred to S3, S4 parasitic diode,i Y=0,i L1、i L2The state that afterflow reduces together.
When power MOSFET tube S3 conductings, the electric current of inductance L1i L1Increase；When S3 is turned off,i L1Reduce；By controlling S3
Break-make can control the electric current i of inductance L1L1, the electric current of inductance L1 is a phase currents at this time,i p=ia=i L1.Therefore, can pass through
The break-make of control power MOSFET tube S3 makesi aTrack a phase voltagesu a.It similarly, can be by controlling the logical of power MOSFET tube S4
It is disconnected to makei bTrack b phase voltagesu b,i n=i b=-i L2.According to the node current equation of Y points, c phase currentsi c=i Y= i L2- i L1=-( i a
+ i b), when three-phase symmetrical, ifi a、i bTrack respective phase voltageu a、u b, theni cAlso phase voltage is trackedu c, to realize three-phase
Input current tracks three-phase input voltage.As can be seen that power MOSFET tube S3, S4 voltage stress is output voltageU o。
Two：Buck patterns
When three phase rectifier output voltageu pn>U oWhen, circuit works in buck patterns.With reference to attached drawing 7, power MOSFET at this time
Pipe S3, S4 are held off, and the work of power MOSFET tube S1, S2 HF switch, simple equivalent circuit is as shown in figure 8, arrow indicates
The reference positive direction of each state variable, since L1, L2 connect always, soi L1=i L2=i L.S1, S2 are controlled after signal uses along tune
System, i.e., each switch periods initial time, and meanwhile it is open-minded.
（1）S1, S2 are simultaneously turned on, current path such as Fig. 9 a.Voltage (u pn-U o) be added on L1, L2,i LRise, while to
Storage capacitorC f, load RL power supply.
（2）S1 conductings, S2 shutdowns, current path such as Fig. 9 b.Ifu pY> U o, theni LIncrease；Otherwise,i LReduce.
（3）S1 shutdowns, S2 conductings, current path such as Fig. 9 c.Ifu nY>U o, theni LIncrease；Otherwise,i LReduce.
（4）S1, S2 are simultaneously turned off, current path such as Fig. 9 d.Back-pressureU oIt is added on L1, L2,i LAfterflow reduces.
When power MOSFET tube S1 conductings, power MOSFET tube S1 electric currentsi S1= i L；When S1 is turned off,i S1=0；Pass through control
The break-make of S1 can control S1 electric currentsi S1, at this timei S1=i p=i a, therefore can be made by controlling the break-make of power MOSFET tube S1i aTrack a phase voltagesu a.Similarly, can be made by controlling the break-make of power MOSFET tube S2i bTrack b phase voltagesu b,-i S2=i n=i b.According to the node current equation of Y points,i c=i Y= i S2- i S1=-(i a+ i b), when three-phase symmetrical, ifi a、i bIt tracks respective
Phase voltageu a、u b, theni cAlso phase voltage is trackedu c, to realize that three-phase input current tracks three-phase input voltage.Power MOSFET
Pipe S1, S2 voltage stress is three phase rectifier output voltageu pnMaximum value.
The working condition in other sections is similar with the working condition of section 1., in terms of a complete power cycle, three-phase
Input current tracks three-phase input voltage.From figure 3, it can be seen thati pTrack three-phase commutation bridge positive output end and mains neutral line it
Between voltageu pN,i n Track the voltage between three-phase commutation bridge negative output terminal and mains neutral lineu nN,i YFor three times supply frequency
Approximate triangular wave.
The foregoing is merely presently preferred embodiments of the present invention, all equivalent changes done according to scope of the present invention patent with
Modification should all belong to the covering scope of the present invention.
Claims (7)
1. a kind of wide-voltage range low voltage stress current-injecting three-phase power factor correcting circuit, it is characterised in that：Including
Three-phase alternating current input power Uin, three-phase commutation bridge DB1, power MOSFET tube S1, power MOSFET tube S2, power MOSFET tube
S3, power MOSFET tube S4, diode D1, diode D2, diode D3, harmonic current injection network, inductance L1, inductance L2,
Output filter capacitor Cf and load；The harmonic current injection network includes two-way switch Sy1, two-way switch Sy2 and two-way opened
Close Sy3；Three of three-phase alternating current input power Uin input phase voltages respectively with three input terminals of three-phase commutation bridge DB1
Connection, three of three-phase alternating current input power Uin input phase voltages also respectively with one end of two-way switch Sy1, two-way opened
Close one end of Sy2, one end connection of two-way switch Sy3；The other end of the two-way switch Sy1, the other end of two-way switch Sy2
And the other end of two-way switch Sy3 is connected in decanting point Y；The positive output end and power MOSFET tube of the three-phase commutation bridge DB1
The drain electrode of S1 connects, and the negative output terminal of the three-phase commutation bridge DB1 is connect with the source electrode of power MOSFET tube S2；Power MOSFET
The source electrode of pipe S1 is connect with one end of the cathode of diode D1 and inductance L1, and the drain electrode of power MOSFET tube S2 is with diode D2's
One end of anode and inductance L2 connect；The other end of inductance L1 connects with the anode of the drain electrode of power MOSFET tube S3 and diode D3
It connects, the other end of inductance L2 and one end of the source electrode of power MOSFET tube S4, the cathode of output filter capacitor Cf and load RL connect
It connects, the cathode of diode D3 is connect with the other end of the anode of output filter capacitor Cf and load RL；The anode of diode D1, two
The drain electrode of the cathode of pole pipe D2, the source electrode of power MOSFET tube S3 and power MOSFET tube S4 is connected in the decanting point Y.
2. wide-voltage range low voltage stress current-injecting three-phase power factor correcting circuit according to claim 1,
It is characterized in that：The power MOSFET tube S1 and power MOSFET tube S2 is IGBT power switch tubes.
3. wide-voltage range low voltage stress current-injecting three-phase power factor correcting circuit according to claim 1,
It is characterized in that：The power MOSFET tube S3 and power MOSFET tube S4 or to restore power diode soon with inverse parallel
IGBT power switch tubes.
4. wide-voltage range low voltage stress current-injecting three-phase power factor correcting circuit according to claim 1,
It is characterized in that：The diode D1, diode D2, diode D3 are fast recovery power diodes.
5. wide-voltage range low voltage stress current-injecting three-phase power factor correcting circuit according to claim 1,
It is characterized in that：The two-way switch Sy1, two-way switch Sy2 and two-way switch Sy3 are by two power MOSFET tubes or two
IGBT pipe differential concatenations form.
6. wide-voltage range low voltage stress current-injecting three-phase power factor correcting circuit according to claim 1,
It is characterized in that：The operating mode of the inductance L1 and inductance L2 is continuous current mode CCM, discontinuous current mode DCM or electricity
The critical BCM of inducing current.
7. wide-voltage range low voltage stress current-injecting three-phase power factor correcting circuit according to claim 1,
It is characterized in that：The output filter capacitor Cf is energy storage electrolytic capacitor.
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| WO2020089419A1 (en) * | 2018-11-02 | 2020-05-07 | Prodrive Technologies B.V. | Electrical power converter |
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| CN107070196A (en) * | 2017-06-15 | 2017-08-18 | 南京航空航天大学 | A kind of three-phase PFC rectification circuits with center line |
| CN108462384B (en) * | 2018-06-09 | 2024-05-24 | 南昌航空大学 | Three-phase buck PFC rectification circuit |
| CN110829826A (en) * | 2019-12-03 | 2020-02-21 | 哈尔滨理工大学 | Buck three-phase power factor correction circuit with large direct-current voltage gain |
| CN110768527A (en) * | 2019-12-03 | 2020-02-07 | 哈尔滨理工大学 | Large-transformation-ratio Buck three-phase PFC circuit based on secondary Buck converter |
| CN112003466B (en) * | 2020-07-21 | 2021-12-17 | 西安理工大学 | Three-phase APFC rectifier capable of realizing voltage boosting and reducing and working method thereof |
| CN112671251B (en) * | 2021-01-13 | 2024-05-31 | 茂硕电源科技股份有限公司 | Time-sharing multiplexing low-ripple buck-boost PFC converter, switching power supply and buck-boost method |
| CN113328620B (en) * | 2021-06-11 | 2022-08-05 | 燕山大学 | Three-phase harmonic current injection type voltage-raising and voltage-dropping converter |
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| CN100471016C (en) * | 2006-12-19 | 2009-03-18 | 重庆大学 | Three phase rectifying bridge DC side parallel type active electric power filter |
| CN101582633B (en) * | 2008-05-14 | 2011-09-14 | 台达电子工业股份有限公司 | Three-phase boosting and deboosting power factor correction circuit and control method thereof |
| CN101860191B (en) * | 2009-04-07 | 2013-01-02 | 台达能源技术（上海）有限公司 | Single-phase and three-phase double voltage-boosting and reducing power factor correcting circuit and control method thereof |
| CN102694460B (en) * | 2011-03-24 | 2014-12-17 | 南京博兰得电子科技有限公司 | Three-phase boost-buck PFC converter |
| CN105162350B (en) * | 2015-08-03 | 2017-10-20 | 中南大学 | The three-phase micro inverter and its control method of a kind of wide loading range of high efficiency |
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| WO2020089419A1 (en) * | 2018-11-02 | 2020-05-07 | Prodrive Technologies B.V. | Electrical power converter |
| NL2021926B1 (en) * | 2018-11-02 | 2020-05-14 | Prodrive Tech Bv | Electrical power converter |
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