CN110112902A - A kind of three-phase buck-boost type PFC rectification circuit - Google Patents
A kind of three-phase buck-boost type PFC rectification circuit Download PDFInfo
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- CN110112902A CN110112902A CN201910499345.9A CN201910499345A CN110112902A CN 110112902 A CN110112902 A CN 110112902A CN 201910499345 A CN201910499345 A CN 201910499345A CN 110112902 A CN110112902 A CN 110112902A
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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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Abstract
The invention discloses a kind of buck-boost type PFC rectification circuits, it includes three-phase voltage source circuit (1), three-phase uncontrollable rectifier circuit (2), two symmetrical stepping-up/stepping-down chopper circuits (3) and shunt circuit (4).Beneficial effects of the present invention: (1) compared with three-phase LC filters Passive Power factor correction circuit, power factor (PF) can reach 1.0, and output voltage is controllable；(2) compared with conventional boost type PFC rectification circuit, in the case where no rear class reduction voltage circuit not only can reduced output voltage, but also the output that can boost；(3) compared with triphase single-switch correcting circuit, current control is simple, and inductive current works in continuous mode, and input and output electric current ripple is small, only needs an inductance, is not required to realize that three-phase decoupling, control are simple；(4) compared with three-phase Multi- Switch power factor correction circuit, driving and control strategy are simple, and save the cost is easy to implement.
Description
Technical field
The present invention relates to power factor correction technology field, especially a kind of three-phase buck-boost type PFC rectification circuit.
Background technique
Power factor correction technology (Power Factor Correction Technique) is power electronics educational circles and work
One basic technology in industry field is caused for inhibiting harmonic pollution with reducing high order current harmonics to power grid and each electrical equipment
Harm.With the increase of electrical equipment, the requirement of high efficiency, High Power Factor also proposed to electrical energy transformer, therefore, respectively
The novel PFC transformation topology of kind also comes into being.
Currently, the research of single-phase power factor correcting technology is relatively more, it is all quite mature in terms of circuit topology and control,
And the research of three-phase activity coefficient adjustment is then relatively late less.Research recently as PFC technology is constantly goed deep into, three-phase
PFC has attracted increasing attention.Power factor correction technology is divided into passive power factor correction and active power factor correction
Two kinds.Passive power factor correction uses passive device, such as LC to filter, although circuit structure is simple, high-efficient, power
Factor is influenced by inductance value, only up to reach 0.95, and output voltage is uncontrollable, so not being used in most cases.
Conventional three-phase active power factor correction circuit usually has Boost circuit characteristic, it is ensured that realizes PFC
The higher DC bus-bar voltage of output simultaneously.Output voltage tune is required for requiring rectifier output voltage that can boost and can be depressured
The wider occasion of adjusting range needs to connect buck circuit in conventional three-phase active power factor correction circuit rear class.From making
From the point of view of the quantity of active power pipe, three-phase PFC can be divided into two classes, and one kind is single switch structure, and one kind is Multi- Switch structure.Three
Phase single switch Boost type pfc circuit, in order to realize the decoupling between three-phase, three inductance are placed on exchange and survey, and work in electric current
Discontinuous mode, its main feature is that current control is simple, but the input of the circuit, output current ripple are larger, want to filtered circuit
Ask higher, output voltage is excessively high, this brings certain difficulty to the selection of power tube, which is generally used for output power
Not stringent occasion is required less than 10kw and to electric current THD.Although three-phase Multi- Switch can input electricity with higher precision controlling
Stream obtains excellent performance, but drives, higher cost complicated with control strategy.
Summary of the invention
The purpose of the present invention is to provide a kind of three-phase buck-boost type PFC rectification circuits, and the circuit structure is simple, using point
The mode of stream realizes three-phase activity coefficient adjustment.
A kind of three-phase buck-boost type PFC rectification circuit provided by the invention, including three-phase voltage source circuit (1), three-phase are not
Control rectifying circuit (2), two symmetrical stepping-up/stepping-down chopper circuits (3) and shunt circuit (4)；Wherein,
Three-phase voltage source (1) is made of three sinusoidal voltage sources that A, B, C tri- is in 120 °, A, B, C three-phase voltage source
One end connects together, and the other end is connected with three-phase uncontrollable rectifier circuit (2) respectively；
Three-phase uncontrollable rectifier circuit (2) is by diode D1~D6Composition, D1Anode and D2Cathode be connected constitute first
Series circuit, D3Anode and D4Cathode be connected constitute Article 2 series circuit, D5Anode and D6Cathode be connected and constitute the
Three series circuits, above three series circuit cathodes are connected with cathode, anode is connected with anode, the other end in A phase voltage source
It is connected with the midpoint of first series circuit, the other end in B phase voltage source is connected with the midpoint of Article 2 series circuit, C phase electricity
The other end of potential source is connected with the midpoint of Article 3 series circuit；
Two symmetrical stepping-up/stepping-down chopper circuits (3) are by power switch tube Q1, power switch tube Q2, inductance L1, diode
D7, diode D8With capacitor C1Composition, Q1、D7、L1、C1Form first stepping-up/stepping-down chopper circuit, Q2、D8、L1、C1Composition second
Stepping-up/stepping-down chopper circuit, Q1Collector be connected with the common cathode of three-phase uncontrollable rectifier circuit (2), Q1Emitter and D7Yin
Pole, C1One end be connected, Q2Emitter be connected with the common-anode of three-phase uncontrollable rectifier circuit (2), Q2Collector and D8Sun
Pole and C1The other end be connected, L1One end and D7Anode be connected, L1The other end and D8Cathode be connected；
Shunt circuit (4) is by power switch tube Q3~Q14It forms, wherein Q3Emitter and first series circuit in
Point is connected, Q3Collector and Q4Collector be connected, Q4Emitter and D7Anode be connected, Q5Emitter and Article 2 string
The midpoint for joining circuit is connected, Q5Collector and Q6Collector be connected, Q6Emitter and D7Anode be connected, Q7Emitter
It is connected with the midpoint of Article 3 series circuit, Q7Collector and Q8Collector be connected, Q8Emitter and D7Anode phase
Even；Q9Emitter be connected with the midpoint of first series circuit, Q9Collector and Q10Collector be connected, Q10Emitter
With D8Cathode be connected, Q11Emitter be connected with the midpoint of Article 2 series circuit, Q11Collector and Q12Collector phase
Even, Q12Emitter and D8Cathode be connected, Q13Emitter be connected with the midpoint of Article 3 series circuit, Q13Collector
With Q14Collector be connected, Q14Emitter and D8Cathode be connected.
Preferably, power switch tube Q1~Q14It can be MOSFET or IGBT, and include anti-paralleled diode.
It preferably, further include input filter, the input filter is arranged before the three-phase uncontrollable rectifier circuit (2)
End.The power supply of three-phase voltage source circuit accesses the three-phase uncontrollable rectifier unit after input filter filters.Which kind of filtering connect
Device does not affect the working principle of the invention.
When circuit realizes reduced output voltage function, if a corresponding actual value of three-phase voltage maximum absolute value is positive
When, control Q1The low frequency component of upper electric current follows three-phase input voltage positive half cycle envelope, and control shunt circuit makes three respectively
The holding normal open state of corresponding switching tube selectivity, three-phase voltage actual value minimum are corresponding among phase voltage actual value
The low frequency component of electric current on switching tube follows three-phase input voltage negative half period envelope；If the one of three-phase voltage maximum absolute value
When corresponding actual value is negative, Q is controlled2The low frequency component of upper electric current follows three-phase input voltage negative half period envelope, control
Shunt circuit makes holding normal open state, the three-phase voltage of corresponding switching tube selectivity among three-phase voltage actual value respectively
The low frequency component of electric current on the maximum corresponding switching tube of actual value follows three-phase input voltage positive half cycle envelope.
When circuit realizes boosting output function, switching tube Q is kept1、Q2Normal off controls shunt circuit, realizes electricity under stable state
Reasonable distribution of the inducing current in three-phase, to realize three-phase activity coefficient adjustment.
Beneficial effects of the present invention: (1) compared with three-phase LC filters passive power factor correcting circuit, power factor is reachable
To 1.0, and output voltage is controllable.(2) compared with conventional boost type PFC rectification circuit, in the case where no rear class reduction voltage circuit i.e.
Can reduced output voltage, and the output that can boost.(3) compared with triphase single-switch correcting circuit, current control is simple, inductive current work
In continuous mode, input and output electric current ripple is small, only needs an inductance, is not required to realize that three-phase decoupling, control are simple.(4) with three
Phase Multi- Switch circuit of power factor correction is compared, and driving and control strategy are simple, and save the cost is easy to implement.
Detailed description of the invention
Fig. 1 is electrical block diagram of the invention (containing appended drawing reference).
Fig. 2 (a) is that A phase input voltage and input current of the invention emulates schematic diagram.
Fig. 2 (b) is that B phase input voltage and input current of the invention emulates schematic diagram.
Fig. 2 (c) is that C phase input voltage and input current of the invention emulates schematic diagram.
Fig. 3 (a)~(e) is network voltage Ua>Ub>UcWhen, under a kind of typical control methods, the present invention realizes reduced output voltage
Current loop mode.
Fig. 3 (f) is each switching tube drive waveforms schematic diagram that reduced output voltage is realized in one embodiment of the invention.
Fig. 4 (a)~(d) is network voltage Ua>Ub>UcWhen, under a kind of typical control methods, the present invention realizes boosting output
Current loop mode.
Fig. 4 (e) is each switching tube drive waveforms schematic diagram of output of boosting in one embodiment of the invention.
Fig. 5 is electrical block diagram of the invention.
Specific embodiment
In order to more specifically describe the present invention, with reference to the accompanying drawing and specific embodiment to technical solution of the present invention into
Row is described in detail.It is emphasized that following the description is only exemplary, the range that is not intended to be limiting of the invention and its
Using.
Referring to the following drawings, non-limiting and nonexcludability embodiment will be described, wherein identical appended drawing reference indicates
Identical component, unless stated otherwise.
As shown in Figure 1, a kind of three-phase buck-boost type PFC rectification circuit, comprising: three-phase voltage source circuit (1), three-phase are not controlled
Rectification circuit (2), two symmetrical stepping-up/stepping-down chopper circuits (3) and shunt circuit (4)；Wherein, three-phase voltage source (1) by A, B,
C tri- is in 120 ° of three sinusoidal voltage sources composition, and A, B, C three-phase voltage source one end connects together, and the other end is respectively with three
Phase uncontrollable rectifier circuit (2) is connected；Three-phase uncontrollable rectifier circuit (2) is by diode D1~D6Composition, D1Anode and D2Cathode
It is connected and constitutes first series circuit, D3Anode and D4Cathode be connected constitute Article 2 series circuit, D5Anode and D6's
Cathode, which is connected, constitutes Article 3 series circuit, composition that above three series circuit cathodes are connected with cathode, anode is connected with anode
The other end of three-phase uncontrollable rectifier circuit (2), A phase voltage source is connected with the midpoint of first series circuit, B phase voltage source it is another
One end is connected with the midpoint of Article 2 series circuit, and the other end in C phase voltage source is connected with the midpoint of Article 3 series circuit；Two
A symmetrical stepping-up/stepping-down chopper circuit (3) is by power switch tube Q1, power switch tube Q2, inductance L1, diode D7, diode D8With
Capacitor C1Composition, power switch tube Q1, diode D7, inductance L1, capacitor C1Form first stepping-up/stepping-down chopper circuit, power switch
Pipe Q2, diode D8, inductance L1, capacitor C1Form second stepping-up/stepping-down chopper circuit, Q1Collector and three-phase uncontrollable rectifier electricity
The common cathode on road (2) is connected, Q1Emitter and D7Cathode, C1One end be connected, Q2Emitter and three-phase uncontrollable rectifier electricity
The common-anode on road (2) is connected, Q2Collector and D8Anode and C1The other end be connected, L1One end and D7Anode be connected,
L1The other end and D8Cathode be connected；Shunt circuit (4) is by power switch tube Q3~Q14It forms, wherein Q3Emitter and
The midpoint of one series circuit is connected, Q3Collector and Q4Collector be connected, Q4Emitter and D7Anode be connected, Q5's
Emitter is connected with the midpoint of Article 2 series circuit, Q5Collector and Q6Collector be connected, Q6Emitter and D7Sun
Extremely it is connected, Q7Emitter be connected with the midpoint of Article 3 series circuit, Q7Collector and Q8Collector be connected, Q8Hair
Emitter-base bandgap grading and D7Anode be connected；Q9Emitter be connected with the midpoint of first series circuit, Q9Collector and Q10Collector
It is connected, Q10Emitter and D8Cathode be connected, Q11Emitter be connected with the midpoint of Article 2 series circuit, Q11Current collection
Pole and Q12Collector be connected, Q12Emitter and D8Cathode be connected, Q13Emitter and Article 3 series circuit midpoint
It is connected, Q13Collector and Q14Collector be connected, Q14Emitter and D8Cathode be connected.Power switch tube Q1~Q14It can
To be MOSFET or IGBT, and contain anti-paralleled diode.
It also includes input filter that Fig. 1, which shows three-phase buck-boost type PFC rectification circuit, and the input filter is arranged in institute
Three-phase uncontrollable rectifier circuit front-end is stated, rectifier bridge exports electric current and enters power grid after filter filtering.In other changes of the present embodiment
In logical embodiment, filter can also be added, meet essence of the invention.
In voltage-dropping type operating mode, switching tube Q4、Q6、Q8、Q9、Q11、Q13Always it is in an off state, it is only corresponding by its
Anti-paralleled diode is operable with switch state.
As shown in Fig. 2 (a~c), Fig. 2 (a) is three-phase input A phase voltage UaWith electric current ia, Fig. 2 (b) is three-phase input B phase
Voltage UbWith electric current ib, Fig. 2 (c) is three-phase input C phase voltage UcWith electric current ic.It can be seen that three-phase current from Fig. 2 (a~c)
Same-phase, i.e. realization PFC are kept with three-phase phase voltage.Fig. 3 (a~e) is reduced output voltage under typical control methods,
Network voltage Ua>Ub>UcWhen, the current loop of circuit work.Fig. 4 (a~d) is output of boosting under typical control methods, power grid electricity
Press Ua>Ub>UcWhen, the current loop of circuit work.
Three-phase buck-boost type PFC rectification circuit in the present embodiment realizes a kind of control mode of reduced output voltage are as follows: works as electricity
Net voltage Ua>0>Ub>UcWhen, system operation mode by Fig. 3 (a), Fig. 3 (b), Fig. 3 (e), complete by the reasonable distribution in switch periods.
As network voltage Ua>Ub>0>UcWhen, system operation mode reasonable distribution in switch periods by Fig. 3 (c), Fig. 3 (d), Fig. 3 (e)
It completes.
For simplifying the analysis, it is believed that three-phase power grid voltage is symmetrical, then for other network voltage situations, those skilled in the art
Member will be understood that a kind of control mode of the realization reduced output voltage in the present embodiment.First according to the result of product of three-phase voltage value
Sign judgement selection Q1Or Q2Carry out high-frequency PWM modulation, Q1Work Q in high-frequency PWM modulation condition2It disconnects, Q3、Q5、Q7
The high frequency modulated of selectivity, in these three switching tubes, corresponding switching tube is in normal open state among three-phase voltage actual value；
Q2Work Q in PWM modulation state1It disconnects, Q10、Q12、Q14The high frequency modulated of selectivity, in these three switching tubes, three-phase voltage
Corresponding switching tube is in normal open state among actual value.Due to three-phase symmetrical, then ia+ib+ic=0, and contrary sign phase current is exhausted
The sum of jack per line phase current absolute value is equal to value.With Ua>0>Ub>UcFor analyze, jack per line is mutually B phase and C phase, and contrary sign is mutually A
Phase, and three-phase voltage value result of product is positive value, selects Q1Carry out high-frequency PWM modulation, Q2It disconnects, the corresponding switching tube of jack per line
Reasonable high frequency modulated, the corresponding switching tube of B are Q5, Q5It is at this time normal open, the corresponding switching tube of C is Q7, Q7For high frequency modulation
System.With Ua>Ub>0>UcFor analyze, jack per line is mutually A phase and B phase, and contrary sign is mutually C phase, and three-phase voltage value result of product is negative
Value selects Q2High-frequency PWM modulation, the reasonable high frequency modulated of the corresponding switching tube of jack per line, the corresponding switching tube of A are Q10, Q10For
High frequency modulated, the corresponding switching tube of B are Q12, Q12It is at this time normal open.Remaining situation is similarly analyzed, and realizes that the function is corresponding
Shown in each detailed drive waveforms schematic diagram such as Fig. 3 (f) of switching tube.
Three-phase buck-boost type PFC rectification circuit in the present embodiment realizes another control mode of boosting output are as follows: when
Network voltage Ua>0>Ub>UcWhen, the reasonable distribution in switch periods is complete by Fig. 4 (a), Fig. 4 (b), Fig. 4 (d) for system operation mode
At.As network voltage Ua>Ub>0>UcWhen, system operation mode is rationally divided in switch periods by Fig. 4 (b), Fig. 4 (c), Fig. 4 (d)
With completion.Q1With Q2Normal off.
For simplifying the analysis, it is believed that three-phase power grid voltage is symmetrical, then for other network voltage situations, those skilled in the art
Member will be understood that a kind of control mode of the realization boosting output in the present embodiment.According to the difference of three-phase input voltage size,
The switching tube of work is reasonably selected, the maximum phase of three-phase input voltage actual value carries out PWM tune with a smallest phase respectively
System, the corresponding switching tube in input voltage actual value centre keep normal open state.With Ua>0>Ub>UcFor analyze, three-phase at this time
Maximum input voltage is mutually A phase, and the corresponding switching tube for carrying out high-frequency PWM modulation is Q10, three-phase input voltage interphase is B phase,
And B phase is negative value, the switching tube of corresponding normal open is Q5, minimum three-phase input voltage is mutually C phase, and corresponding high-frequency PWM modulation is opened
Guan Guanwei Q7, under the operating mode, rest switch pipe is all in off state.With Ua>Ub>0>UcFor analyze, three-phase is defeated at this time
It is mutually A phase that it is maximum, which to enter voltage, and the corresponding switching tube for carrying out PWM modulation is Q10, three-phase input voltage interphase is B phase, and B phase is
Positive value, the switching tube of corresponding normal open are Q12, minimum three-phase input voltage is mutually C phase, and the switching tube of corresponding high-frequency PWM modulation is
Q7, under the operating mode, rest switch pipe is all in off state.Remaining situation is similarly analyzed, and realizes that the function is corresponding each
Shown in the detailed drive waveforms schematic diagram such as Fig. 4 (e) of switching tube.
Simulation result shows that the pfc circuit realizes that reduced output voltage or boosting output Shi Junke make power factor reach 1.0.
Those skilled in the art will appreciate that.It is possible for making numerous accommodations to above description, so embodiment is only
For describing one or more particular implementations.
The above is only that preferred embodiments of the present invention will be described, is not limited the scope of the present invention
Fixed, without departing from the spirit of the design of the present invention, those of ordinary skill in the art make technical solution of the present invention
Various changes and improvements should all be fallen into the protection scope that claims of the present invention determines.
Claims (3)
1. a kind of three-phase buck-boost type PFC rectification circuit, which is characterized in that do not controlled including three-phase voltage source circuit (1), three-phase whole
Current circuit (2), two symmetrical stepping-up/stepping-down chopper circuits (3) and shunt circuit (4)；Wherein,
Three-phase voltage source (1) is made of three sinusoidal voltage sources that A, B, C tri- is in 120 °, A, B, C three-phase voltage source one end
It connects together, the other end is connected with three-phase uncontrollable rectifier circuit (2) respectively；
Three-phase uncontrollable rectifier circuit (2) is by diode D1~D6Composition, D1Anode and D2Cathode be connected constitute first series connection
Circuit, D3Anode and D4Cathode be connected constitute Article 2 series circuit, D5Anode and D6Cathode be connected constitute Article 3
Series circuit, above three series circuit cathodes are connected with cathode, anode is connected with anode, the other end in A phase voltage source and
The midpoint of one series circuit is connected, and the other end in B phase voltage source is connected with the midpoint of Article 2 series circuit, C phase voltage source
The other end be connected with the midpoint of Article 3 series circuit；
Two symmetrical stepping-up/stepping-down chopper circuits (3) are by power switch tube Q1, power switch tube Q2, inductance L1, diode D7, two poles
Pipe D8With capacitor C1Composition, Q1、D7、L1、C1Form first stepping-up/stepping-down chopper circuit, Q2、D8、L1、C1Form second buck
Chopper circuit, Q1Collector be connected with the common cathode of three-phase uncontrollable rectifier circuit (2), Q1Emitter and D7Cathode, C1's
One end is connected, Q2Emitter be connected with the common-anode of three-phase uncontrollable rectifier circuit (2), Q2Collector and D8Anode and C1
The other end be connected, L1One end and D7Anode be connected, L1The other end and D8Cathode be connected；
Shunt circuit (4) is by power switch tube Q3~Q14It forms, wherein Q3Emitter and first series circuit midpoint phase
Even, Q3Collector and Q4Collector be connected, Q4Emitter and D7Anode be connected, Q5Emitter and Article 2 series electrical
The midpoint on road is connected, Q5Collector and Q6Collector be connected, Q6Emitter and D7Anode be connected, Q7Emitter and
The midpoint of three series circuits is connected, Q7Collector and Q8Collector be connected, Q8Emitter and D7Anode be connected；Q9's
Emitter is connected with the midpoint of first series circuit, Q9Collector and Q10Collector be connected, Q10Emitter and D8's
Cathode is connected, Q11Emitter be connected with the midpoint of Article 2 series circuit, Q11Collector and Q12Collector be connected, Q12
Emitter and D8Cathode be connected, Q13Emitter be connected with the midpoint of Article 3 series circuit, Q13Collector and Q14's
Collector is connected, Q14Emitter and D8Cathode be connected.
2. three-phase buck-boost type PFC rectification circuit as described in claim 1, it is characterised in that: power switch tube Q1~Q14It is
MOSFET or IGBT, and include anti-paralleled diode.
3. three-phase buck-boost type PFC rectification circuit as claimed in claim 1 or 2, it is characterised in that: further include input filter
Device, the input filter are arranged in three-phase uncontrollable rectifier circuit (2) front end.
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| CN201910499345.9A CN110112902B (en) | 2019-06-11 | 2019-06-11 | Three-phase boost-buck PFC rectification circuit |
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| CN201910499345.9A CN110112902B (en) | 2019-06-11 | 2019-06-11 | Three-phase boost-buck PFC rectification circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023098217A1 (en) * | 2021-11-30 | 2023-06-08 | 刘三英 | Two-level three-phase rectification corrector and control method therefor |
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| CN109167514A (en) * | 2018-10-08 | 2019-01-08 | 南昌航空大学 | A kind of three-phase step-down type PFC rectification circuit |
| CN109167524A (en) * | 2018-11-06 | 2019-01-08 | 深圳市高益智能电气有限公司 | A kind of three-phase alternating current-direct current buck translation circuit and its control method |
| CN209787041U (en) * | 2019-06-11 | 2019-12-13 | 南昌航空大学 | Three-phase boost-buck PFC (power factor correction) rectification circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023098217A1 (en) * | 2021-11-30 | 2023-06-08 | 刘三英 | Two-level three-phase rectification corrector and control method therefor |
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