CN102684472A - Three-phase power factor correction circuit device - Google Patents
Three-phase power factor correction circuit device Download PDFInfo
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- CN102684472A CN102684472A CN2012101263503A CN201210126350A CN102684472A CN 102684472 A CN102684472 A CN 102684472A CN 2012101263503 A CN2012101263503 A CN 2012101263503A CN 201210126350 A CN201210126350 A CN 201210126350A CN 102684472 A CN102684472 A CN 102684472A
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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
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- 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 embodiment of the invention discloses a three-phase power factor correction circuit device which comprises three input rectifiers. Each input rectifier is connected with one double-Boost circuit; three double-Boost circuits are connected in parallel and are connected with an output positive BUS capacitor and an output negative BUS capacitor; the input rectifiers are used for being connected with a three-phase input; and each phase in the three-phase input is connected with two input rectifiers. The three-phase power factor correcting circuit device disclosed by the embodiment of the invention implements an interleaving effect on the premise of not increasing the power density and the complexity of an integrated system.
Description
Technical field
The embodiment of the invention relates to communication technical field, relates in particular to a kind of three-phase activity coefficient adjustment (PFC, Power Factor Correction) circuit arrangement.
Background technology
Communication system, information equipment require increasingly highly to power supply, need reach high efficiency, high power density, high reliability.Power supply generally adopts the distributed power supply structure as the key component of system power conversion, can be divided into AC-dc converter (AC/DC), and uninterrupted power supply (UPS, Uninterruptible Power System) on the function.Wherein, AC-dc converter is also referred to as primary power source, and UPS is mainly the Alternating Current Power Supply that back level AC/DC provides high reliability, high cleanliness.
Primary power source AC/DC, and UPS generally adopt the two stage power mapped structure, wherein the first order is power factor correction (PFC, a Power Factor Correction) circuit; The back level is respectively isolation DC/DC converter, reaches sinewave inverter.(Boost) circuit has greater efficiency, and the advantage of high reliability owing to simply boost; First order circuit of power factor correction is generally realized by the Boost circuit; Reach power factor emendation function, make the input AC harmonic current components be lower than the setting of various standards.General Single-phase PFC circuit 5kW (kilowatt) cost performance is higher during the load of the left and right sides, in order to realize higher power output, generally adopt the three-phase pfc circuit, and can in the three-phase pfc circuit, realize two staggered parallel connections.
Usually, other a whole set of power of increase, driving, control circuit are realized the crisscross parallel function in existing three-phase pfc circuit.It is very complicated that but whole system will become, and increased printed circuit board (PCB) (PCB, Printed Circuit Board) the wiring difficulty of Boost circuit, also reduced the power density of Boost circuit simultaneously to a certain extent.
Summary of the invention
The purpose of the embodiment of the invention provides a kind of three-phase power factor correcting circuit device, realizes the crisscross parallel function easily.
The purpose of the embodiment of the invention realizes through following technical scheme:
A kind of three-phase power factor correcting circuit device; Comprise three input rectifiers; Each said input rectifier connects a two Boost circuit; Three said pair of Boost circuit parallelly connected and connection positive BUS electric capacity of output and the negative BUS electric capacity of output, said input rectifier is used to connect three-phase input, two the said input rectifiers that whenever are connected during said three-phase is imported.
Technical scheme by the invention described above provides can be found out; Through three input rectifiers; Each said input rectifier connects a two Boost circuit; Three said pair of Boost circuit parallelly connected and connection positive BUS electric capacity of output and the negative BUS electric capacity of output, said input rectifier is used to connect three-phase input, two the said input rectifiers that whenever are connected during said three-phase is imported.Under the prerequisite that does not increase whole system power density, complexity, realize the effect of Boost circuit parallel connection.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the invention; The accompanying drawing of required use is done to introduce simply in will describing embodiment below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skill in the art; Under the prerequisite of not paying creative work, can also obtain other accompanying drawings according to these accompanying drawings.
The formation sketch map of the three-phase power factor correcting circuit device that Fig. 1 provides for the embodiment of the invention.
The circuit diagram of the three-phase power factor correcting circuit device that Fig. 2 provides for the embodiment of the invention.
The waveform sketch map of the three-phase power factor correcting circuit device that Fig. 3 provides for the embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on embodiments of the invention, those of ordinary skills belong to protection scope of the present invention not making the every other embodiment that is obtained under the creative work prerequisite.
As shown in Figure 1; The embodiment of the invention provides a kind of three-phase power factor correcting circuit device; Comprise three input rectifiers (input rectifier 11, input rectifier 12, input rectifier 13), each input rectifier connects two Boost circuit, and (input rectifier 11 connects two Boost circuit 14, and input rectifier 12 connects two Boost circuit 15; Input rectifier 13 connects two Boost circuit 16); Three two Boost circuit parallel connections and connect the positive BUS electric capacity 17 of output and the negative BUS electric capacity 18 of output, input rectifier 11 is used to connect three-phase input (a phase, b phase, c phase), two input rectifiers that whenever are connected in the three-phase input (a be connected input rectifier 11 and input rectifier 13; B be connected input rectifier 11, input rectifier 12, c be connected input rectifier 12, input rectifier 13).
Optional, the rectifier diode of input rectifier can constitute full-bridge rectification structure or other structures, and is unrestricted.As, each input rectifier comprises four rectifier diodes, and four rectifier diodes constitute a full bridge rectifier, and the output of full bridge rectifier connects two Boost circuit.Particularly, as shown in Figure 2:
Wherein, optional, the rectifier diode that input rectifier comprises can replace with controllable silicon (SCR, Silicon Controlled Rectifier) or power switch pipe.Power switch pipe can comprise insulated gate bipolar transistor (IGBT; Insulated Gate Bipolar Transistor); Perhaps metal-oxide half field effect transistor (MOSFET, Metal-Oxide-Semiconductor Field-Effect Transistor), or the like.
In addition, those skilled in the art can know that two Boost circuit comprise a positive Boost circuit and a negative Boost circuit, be appreciated that positive BUS (bus) direct voltage of positive Boost circuit realization, and negative Boost circuit are realized negative BUS direct voltage.Therefore, three two Boost circuit of the embodiment of the invention can be to being interpreted as six Boost circuit.
Particularly, each the Boost circuit in two Boost circuit can comprise inductance (in the Boost circuit, also can be called main inductance usually), power switch pipe and power diode.Still as shown in Figure 2, two Boost circuit 14 are: constitute positive Boost circuit by inductance L 1, power switch pipe Q1, power diode D21, constitute negative Boost circuit by inductance L 2, power switch pipe Q2, power diode D22;
Two Boost circuit 15 are: constitute positive Boost circuit by inductance L 3, power switch pipe Q3, power diode D23; Constitute negative Boost circuit by inductance L 4, power switch pipe Q4, power diode D24;
Two Boost circuit 16 are: constitute positive Boost circuit by inductance L 5, power switch pipe Q5, power diode D25; Constitute negative Boost circuit by inductance L 6, power switch pipe Q6, power diode D26.
Wherein, optional, the main inductance that the Boost circuit comprises can perhaps be connected between a plurality of main inductances when being a plurality of for one or for a plurality of in parallel connection.
Optional, the power switch pipe that the Boost circuit comprises can one or for a plurality of, can parallel connection between a plurality of power switch pipes when be a plurality of or connect, and the power switch pipe that said Boost circuit comprises can comprise MOSFET or IGBT, or the like.
Optional, the power diode that the Boost circuit comprises can perhaps be connected between a plurality of power diodes when being a plurality of for one or for a plurality of in parallel connection, and the power diode that said Boost circuit comprises can comprise MOSFET or IGBT, or the like.Those skilled in the art can know; MOSFET or IGBT constant power switching tube can be realized the effect of diode under specific circumstances, as replacing diode with MOSFET, during half-wave, let the MOSFET conducting; Played the effect of forward conduction equally, thereby reduced the wastage, raise the efficiency.
Particularly, two Boost circuit 14,15,16 parallel connections and the connection positive BUS capacitor C 1 of output and the negative BUS capacitor C 2 of output.Those skilled in the art can know that positive BUS electric capacity can be expressed as+BUS electric capacity, and negative BUS electric capacity can be expressed as-BUS electric capacity, does not limit.
Particularly, still as shown in Figure 2, a phase (voltage Va) was both received inductance L 1, was received inductance L 2 through rectifier diode D2 through rectifier diode D1 in the three-phase input; Simultaneously also receive inductance L 5, receive inductance L 6 through rectifier diode D12 through rectifier diode D11.Be that Va connects two Boost circuit 14 and two Boost circuit 16.
B phase (voltage Vb) was both received inductance L 1, was received inductance L 2 through rectifier diode D4 through rectifier diode D3 in the three-phase input; Simultaneously also receive inductance L 3, receive inductance L 4 through rectifier diode D6 through rectifier diode D5.Be that Vb connects two Boost circuit inductance 14 and two Boost circuit inductance 15.
C phase (voltage Vc) was both received inductance L 3, was received inductance L 4 through rectifier diode D8 through rectifier diode D7 in the three-phase input; Simultaneously also receive inductance L 5, receive inductance L 6 through rectifier diode D10 through rectifier diode D9.Be that Vc connects two Boost circuit 15 and two Boost circuit 16.
Optional, above-mentioned Boost circuit can replace with Buck circuit, Buck/Boost circuit, Cuk circuit or SEPIC circuit in the embodiment of the invention, or the like.Foregoing circuit can be able to understand with reference to prior art, does not give unnecessary details at this.
Technical scheme by the invention described above provides can be found out, under the prerequisite that does not increase whole system power density, complexity, can realize the effect of Boost circuit parallel connection.
Still as shown in Figure 2; With three two Boost circuit is example; The rectifier diode of input rectifier is connected to different Boost main inductances, imports three-phase rectification in twos in essence and constitute three independently two Boost circuit, the three-phase power factor correcting circuit device of the embodiment of the invention is described:
Wherein, symbol L represents main inductance, and symbol Q represents power switch pipe, and symbol D represents diode.
At first, the three-phase power factor correcting circuit device of the embodiment of the invention comprises six Boost circuit, and first Boost circuit is made up of L1, Q1, D21; Second Boost circuit is made up of L2, Q2, D22; The 3rd Boost circuit is made up of L3, Q3, D23; The 4th Boost circuit is made up of L4, Q4, D24; The 5th Boost circuit is made up of L5, Q5, D25; The 6th Boost circuit is made up of L6, Q6, D26.
Then, for input voltage a phase, rectifier diode D1, D11, D2, D12 are connected to main inductance L1, L5, L2, L6.
For input voltage b phase, rectifier diode D3, D5, D4, D6 are connected to main inductance L1, L3, L2, L4.
For input voltage c phase, rectifier diode D7, D9, D8, D10 are connected to main inductance L3, L5, L4, L6.
At last, for a phase, b mutually and any 2 phases of c in mutually, can realize being connected to main inductance L1, L2, L3, L4, L5, L6, thus constitute six Boost circuit, realize that promptly rectification in twos constitutes three independently two Boost circuit.
As shown in Figure 3; The main waveform of the three-phase power factor correcting circuit device of the embodiment of the invention, wherein, symbol t represents the time; Symbol i represents electric current; Concrete, represent like iD1: flow through electric current, the iD11 representative of D1: flow through electric current, the ia representative of D11: a phase current, iL1 representative: flow through the electric current of L1, Va, Vb, Vc represent the voltage that exchanges three-phase a, b, c respectively.
An input three-phase sine-wave cycle comprises 12 switch mode, and the detailed operation principle is explained as follows:
Mode one (0～t1): give+1 charging of BUS capacitor C by D1, D7, D9 conducting, the Boost circuit working that L1, L3, L5 constitute; D4, D6 conducting, the Boost circuit working that L2, L4 constitute are given-2 chargings of BUS capacitor C.A phase ia flows through D1, L1, Q1, D21, constitutes a single phase boost circuit; B phase ib flows through D4, D6, L2, L4, Q2, Q4, D22, D24, constitutes one two staggered parallelly connected Boost circuit; C phase ic flows through D7, D9, L3, L5, Q3, Q5, D23, D25, constitutes another one two staggered parallelly connected Boost circuit.
Mode two (t1～t2): D1, D7, D11 conducting, the Boost circuit working that L1, L3, L5 constitute are given+the BUS charging; D4, D6 conducting, the Boost circuit working that L2, L4 constitute are given-the BUS charging.A phase ia flows through D1, D11, L1, L5, Q1, Q5, D21, D25, constitutes one two staggered parallelly connected Boost circuit; B phase ib flows through D4, D6, L2, L4, Q2, Q4, D22, D24, constitutes another one two staggered parallelly connected Boost circuit; C phase ic flows through D7, L3, Q3, D23, constitutes a single phase boost circuit.
Mode three (t2～t3): D1, D11 conducting, the Boost circuit working that L1, L5 constitute are given+the BUS charging; D4, D6, D10 conducting, the Boost circuit working that L2, L4, L6 constitute are given-the BUS charging.A phase ia flows through D1, D11, L1, L5, Q1, Q5, D21, D25, constitutes one two staggered parallelly connected Boost circuit; B phase ib flows through D4, D6, L2, L4, Q2, Q4, D22, D24, constitutes another one two staggered parallelly connected Boost circuit; C phase ic flows through D10, L6, Q6, D26, constitutes a single phase boost circuit.
Mode four (t3～t4): D1, D11 conducting, the Boost circuit working that L1, L5 constitute are given+the BUS charging; D4, D8, D10 conducting, the Boost circuit working that L2, L4, L6 constitute are given-the BUS charging.A phase ia flows through D1, D11, L1, L5, Q1, Q5, D21, D25, constitutes one two staggered parallelly connected Boost circuit; B phase ib flows through D4, L2, Q2, D22, constitutes a single phase boost circuit; C phase ic flows through D8, D10, L4, L6, Q4, Q6, D24, D26, constitutes another one two staggered parallelly connected Boost circuit.
Mode five (t4～t5): D1, D5, D11 conducting, the Boost circuit working that L1, L3, L5 constitute are given+the BUS charging; D8, D10 conducting, the Boost circuit working that L4, L6 constitute are given-the BUS charging.A phase ia flows through D1, D11, L1, L5, Q1, Q5, D21, D25, constitutes one two staggered parallelly connected Boost circuit; B phase ib flows through D5, L3, Q3, D23, constitutes a single phase boost circuit; C phase ic flows through D8, D10, L4, L6, Q4, Q6, D24, D26, constitutes another one two staggered parallelly connected Boost circuit.
Mode six (t5～t6): D3, D5, D11 conducting, the Boost circuit working that L1, L3, L5 constitute are given+the BUS charging; D8, D10 conducting, the Boost circuit working that L4, L6 constitute are given-the BUS charging.A phase ia flows through D11, L5, Q5, D25, constitutes a single phase boost circuit; B phase ib flows through D3, D5, L1, L3, Q1, Q3, D21, D23, constitutes one two staggered parallelly connected Boost circuit; C phase ic flows through D8, D10, L4, L6, Q4, Q6, D24, D26, constitutes another one two staggered parallelly connected Boost circuit.
Mode seven (t6～t7): D3, D5 conducting, the Boost circuit working that L1, L3 constitute are given+the BUS charging; D2, D8, D10 conducting, the Boost circuit working that L2, L4, L6 constitute are given-the BUS charging.A phase ia flows through D2, L2, Q2, D22, constitutes a single phase boost circuit; B phase ib flows through D3, D5, L1, L3, Q1, Q3, D21, D23, constitutes one two staggered parallelly connected Boost circuit; C phase ic flows through D8, D10, L4, L6, Q4, Q6, D24, D26, constitutes another one two staggered parallelly connected Boost circuit.
Mode eight (t7～t8): D3, D5 conducting, the Boost circuit working that L1, L3 constitute are given+the BUS charging; D2, D8, D12 conducting, the Boost circuit working that L2, L4, L6 constitute are given-the BUS charging.A phase ia flows through D2, D12, L2, L6, Q2, Q6, D22, D26, constitutes one two staggered parallelly connected Boost circuit; B phase ib flows through D3, D5, L1, L3, Q1, Q3, D21, D23, constitutes another one two staggered parallelly connected Boost circuit; C phase ic flows through D8, L4, Q4, D24, constitutes a single phase boost circuit.
Mode nine (t8～t9): D3, D5, D9 conducting, the Boost circuit working that L1, L3, L5 constitute are given+the BUS charging; D2, D12 conducting, the Boost circuit working that L2, L6 constitute are given-the BUS charging.A phase ia flows through D2, D12, L2, L6, Q2, Q6, D22, D26, constitutes one two staggered parallelly connected Boost circuit; B phase ib flows through D3, D5, L1, L3, Q1, Q3, D21, D23, constitutes another one two staggered parallelly connected Boost circuit; C phase ic flows through D9, L5, Q5, D25, constitutes a single phase boost circuit.
Mode ten (t9～t10): D3, D7, D9 conducting, the Boost circuit working that L1, L3, L5 constitute are given+the BUS charging; D2, D12 conducting, the Boost circuit working that L2, L6 constitute are given-the BUS charging.A phase ia flows through D2, D12, L2, L6, Q2, Q6, D22, D26, constitutes one two staggered parallelly connected Boost circuit; B phase ib flows through D3, L1, Q1, D21, constitutes a single phase boost circuit; C phase ic flows through D7, D9, L3, L5, Q3, Q5, D23, D25, constitutes another one two staggered parallelly connected Boost circuit.
Mode 11 (t10～t11): D7, D9 conducting, the Boost circuit working that L3, L5 constitute are given+the BUS charging; D2, D6, D12 conducting, the Boost circuit working that L2, L4, L6 constitute are given-the BUS charging.A phase ia flows through D2, D12, L2, L6, Q2, Q6, D22, D26, constitutes one two staggered parallelly connected Boost circuit; B phase ib flows through D6, L4, Q4, D24, constitutes a single phase boost circuit; C phase ic flows through D7, D9, L3, L5, Q3, Q5, D23, D25, constitutes another one two staggered parallelly connected Boost circuit.
Mode 12 (t11～t12): D7, D9 conducting, the Boost circuit working that L3, L5 constitute are given+the BUS charging; D4, D6, D12 conducting, the Boost circuit working that L2, L4, L6 constitute are given-the BUS charging.A phase ia flows through D12, L6, Q6, D26, constitutes a single phase boost circuit; B phase ib flows through D4, D6, L2, L4, Q2, Q4, D22, D24, constitutes one two staggered parallelly connected Boost circuit; C phase ic flows through D7, D9, L3, L5, Q3, Q5, D23, D25, constitutes another one two staggered parallelly connected Boost circuit.
Specify the change of current work of Boost circuit main power tube below:
In 360 degree three-phase alternating current power frequency periods, each Boost circuit working 300 degree, 60 degree just quit work in the three-phase alternating voltage power frequency period.For example, the operation interval of first Boost circuit is: 0～300 degree.Thereby the per 60 degree changes of current of the power switch pipe of each Boost circuit once.
Specify the change of current work of input rectifying diode again:
In 360 degree three-phase alternating current power frequency periods, each input rectifying diode current flow 150 degree.For example, the conducting interval of D1 is: 0～150 degree.Thereby the per 30 degree changes of current of each input rectifying diode once.
Specify the crisscross parallel operation interval of Boost circuit again:
Can find out that by the course of work crisscross parallel operation interval of each Boost circuit is 120 degree.With input voltage a phase positive half wave is example: the crisscross parallel of input voltage a phase positive half wave is realized that by D1, D11 parallel connection the conducting interval of D1 is: 0～150 degree; And the conducting interval of D11 is: 30～180 degree.Thereby, in 30～150 degree intervals, D1 can with the D11 parallel operation.Simultaneously, the switching frequency of Q1, L1 and Q5, L5 is identical, but can misphase 180 degree work, in this is interval, just can realize crisscross parallel like this.In addition, the conducting interval of D2 is: 180～330 degree; And the conducting interval of D12 is: 210～360 degree.Therefore, in 210～330 degree intervals, Q2, L2 and Q6, L6 realize crisscross parallel work.
Specify the relation of input current and input diode electric current again:
Still be example with input voltage a phase positive half wave: the input current of input voltage a phase positive half wave is the electric current sum that flows through D1, D11, and the conducting interval of D1 is: 0～150 degree; And the conducting interval of D11 is: 30～180 degree.Therefore, the conducting interval of the input current of input voltage a phase positive half wave is: 0～180 degree.In like manner, can analyze the conducting interval that obtains every phase current is 360 degree, and new architecture can phase shortage work in whole 360 degree power frequency periods.
Specify the realization principle of PFC again:
Still be example with input voltage a phase positive half wave: D1 conducting in 0～30 degree is interval, first Boost circuit be with high-frequency work, the variation of the current following a phase input voltage of L1 and changing; D1 and the common conducting of D11 in 30～150 degree are interval, first Boost circuit and the 5th Boost circuit are worked with the high frequency crisscross parallel, the current following a of L1 and L5 mutually input voltage variation and change; D11 conducting in 150～180 degree are interval, the 5th Boost circuit be with high-frequency work, the variation of the current following a phase input voltage of L5 and changing.Therefore, in 0～180 degree is interval the PFC inductive current can follow a phase input voltage positive half wave variation and change.Simultaneously, can analyze and obtain all PFC inductance and can follow the variation of input voltage and change, thereby realize the PFC work of every phase.Various simulations, digital control scheme can realize the controlled function mentioned in the literary composition, but the convenient practical application of digital control scheme of CPLD and DSP.
Technical scheme by the invention described above provides can be found out, through changing the connected mode of input rectifying diode dexterously, under the prerequisite that does not increase whole system power density, complexity, has realized the effect of crisscross parallel.Three-phase alternating current input simultaneously can be worked in the full power frequency period of 360 degree, can reach the effect of the good power factor correction of the low PF of input, high THD.
In addition, the three-phase power factor correcting circuit device of the embodiment of the invention is imported three-phase rectification in twos in essence and is constituted three independently two Boost circuit, because the superiority of this new topological structure also has following advantage:
The two Boost circuit of existing three-phase also comprise six Boost circuit; But the operation interval of each Boost circuit is merely 180 degree; And also specified power output will be provided in this half power frequency period, thereby the input peak current is bigger, influences the raising of the type selecting and the operating efficiency of device.And in the three-phase power factor correcting circuit device of the embodiment of the invention, the operation interval of each Boost circuit can extend to 300 degree, has improved the utilance of inductance.
In each power frequency half wave cycles (180 degree), whenever can realize two interval staggered parallel operations of 120 degree mutually, and this crisscross parallel occurs near the peak value of input voltage, it is maximum that this interval need be transferred to the power of load.Therefore, because crisscross parallel work, the electric current quota of PFC main inductance, power switch pipe, power diode can reduce, and on equal extent, provides cost savings.
If the voltage of power switch pipe, diode, voltage do not change by norm,, reduced the conduction loss of power tube, thereby can increase work efficiency because initial electric current is born by two staggered parallel connections jointly.
If the voltage of power switch pipe, diode, voltage do not change by norm,, thereby electric current, the voltage stress of power tube have been reduced to a certain extent nearly because that peak current has reduced is half the.
Owing to reduced the input current ripple, can simplify input Electro Magnetic Compatibility (EMC, Electro Magnetic Compatibility) Filter Design, improved the performance of EMC; Owing to reduced output current ripple, can reduce BUS electric capacity ripple current, reduced the caloric value of electric capacity, the useful life of having improved electrochemical capacitor.
Import certain lack mutually, when breaking, two other independently imports full-bridge rectifier still can operate as normal, thereby can use through using the appropriate control mode, still can keep operate as normal.
The above; Be merely the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technical staff who is familiar with the present technique field is in the technical scope that the present invention discloses; The variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claims.
One of ordinary skill in the art will appreciate that all or part of flow process that realizes in the foregoing description method; Be to instruct relevant hardware to accomplish through computer program; Described program can be stored in the computer read/write memory medium; This program can comprise the flow process like the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only storage memory body (Read-Only Memory, ROM) or at random store memory body (Random Access Memory, RAM) etc.
Claims (8)
1. three-phase power factor correcting circuit device; It is characterized in that; Comprise three input rectifiers, each said input rectifier connects a two Boost circuit, three said pair of Boost circuit parallelly connected and connection positive BUS electric capacity of output and the negative BUS electric capacity of output; Said input rectifier is used to connect the three-phase input, two the said input rectifiers that whenever are connected in the said three-phase input.
2. three-phase power factor correcting circuit device according to claim 1; It is characterized in that; The rectifier diode that said input rectifier comprises replaces with controllable silicon SCR or power switch pipe, and said power switch pipe comprises metal oxide semiconductor field effect tube MOSFET or insulated gate bipolar transistor IGBT.
3. three-phase power factor correcting circuit device according to claim 1; It is characterized in that; Each said input rectifier comprises four rectifier diodes, and said four rectifier diodes constitute a full bridge rectifier, and the output of said full bridge rectifier connects said pair of Boost circuit.
4. three-phase power factor correcting circuit device according to claim 1; It is characterized in that; Said pair of Boost circuit comprises a positive Boost circuit and a negative Boost circuit, and each Boost circuit comprises main inductance, power switch pipe and power diode.
5. three-phase power factor correcting circuit device according to claim 4 is characterized in that, the main inductance that said Boost circuit comprises is one or is a plurality of, parallel connection or series connection between a plurality of main inductances when being a plurality of.
6. three-phase power factor correcting circuit device according to claim 4; It is characterized in that; The power switch pipe that said Boost circuit comprises is one or is a plurality of; Parallel connection or series connection between a plurality of power switch pipes when being a plurality of, the power switch pipe that said Boost circuit comprises comprises MOSFET or IGBT.
7. three-phase power factor correcting circuit device according to claim 4; It is characterized in that; The power diode that said Boost circuit comprises is one or is a plurality of; Parallel connection or series connection between a plurality of power diodes when being a plurality of, the power diode that said Boost circuit comprises comprises MOSFET or IGBT.
8. three-phase power factor correcting circuit device according to claim 1 is characterized in that, said three two Boost circuit replace with Buck circuit, Buck/Boost circuit, Cuk circuit or SEPIC circuit.
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| CN103296879A (en) * | 2013-05-09 | 2013-09-11 | 燕山大学 | Two-way two-input CUK direct-current converter and power distribution method thereof |
| CN104022632A (en) * | 2014-06-26 | 2014-09-03 | 缪恢宏 | Input zero-ripple wave converter |
| CN104660071A (en) * | 2015-02-11 | 2015-05-27 | 华为技术有限公司 | Rectifying circuit |
| CN105429490A (en) * | 2015-11-26 | 2016-03-23 | 深圳市高斯宝电气技术有限公司 | Three-phase PFC switching power supply circuit |
| CN105656296A (en) * | 2014-11-17 | 2016-06-08 | 艾默生网络能源有限公司 | Soft switch auxiliary circuit, two-phase or three-phase input PFC circuit and control method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103296879A (en) * | 2013-05-09 | 2013-09-11 | 燕山大学 | Two-way two-input CUK direct-current converter and power distribution method thereof |
| CN104022632A (en) * | 2014-06-26 | 2014-09-03 | 缪恢宏 | Input zero-ripple wave converter |
| CN105656296A (en) * | 2014-11-17 | 2016-06-08 | 艾默生网络能源有限公司 | Soft switch auxiliary circuit, two-phase or three-phase input PFC circuit and control method |
| CN105656296B (en) * | 2014-11-17 | 2019-05-10 | 维谛技术有限公司 | Sofe Switch auxiliary circuit, two-phase or three-phase input pfc circuit and control method |
| CN104660071A (en) * | 2015-02-11 | 2015-05-27 | 华为技术有限公司 | Rectifying circuit |
| CN104660071B (en) * | 2015-02-11 | 2018-01-02 | 华为技术有限公司 | A kind of rectification circuit |
| CN105429490A (en) * | 2015-11-26 | 2016-03-23 | 深圳市高斯宝电气技术有限公司 | Three-phase PFC switching power supply circuit |
| CN105429490B (en) * | 2015-11-26 | 2018-09-04 | 深圳市高斯宝电气技术有限公司 | A kind of three-phase PFC switching power circuits |
| CN112821753A (en) * | 2021-02-25 | 2021-05-18 | 中国电子科技集团公司第十八研究所 | Multi-module power distribution topological circuit |
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