CN102684519B - Circuit and control method thereof - Google Patents
Circuit and control method thereof Download PDFInfo
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- CN102684519B CN102684519B CN201210128564.4A CN201210128564A CN102684519B CN 102684519 B CN102684519 B CN 102684519B CN 201210128564 A CN201210128564 A CN 201210128564A CN 102684519 B CN102684519 B CN 102684519B
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Abstract
The invention discloses a circuit, which comprises a first bridge arm unit, a second bridge arm unit, a first capacitor and a second capacitor. Second ports for inductors of the first bridge arm unit and the second bridge arm unit are used for inputting cophase alternate current. Switch tubes of the first bridge arm unit and the second bridge arm unit are opened in a staggered manner to charge a first inductor and a second inductor, and the capacitance ripple waves are reduced. Under a working mode of a battery, the first bridge arm unit and the second bridge arm unit can still charge the inductors, and the circuit is not provided with idle devices, so as to improve the utilization ratio of the devices.
Description
Technical field
The present invention relates to a kind of circuit and control method thereof.
Background technology
Three-phase Vienna (Vienna) power factor correction (PFC, Power Factor Correction) circuit is used widely in the inverter circuit of uninterrupted power supply (UPS, Uninterruptible Power System).As shown in Figure 1, the three-phase Vienna pfc circuit that is generally applied to UPS mainly comprises: A phase 101, B phase 102 and the C phase 103 of three-phase alternating-current supply AC, anode BAT+ and battery cathode BAT-, selector switch K1, K2 and K3, inductance L 1, L2 and L3, diode D1, D2, D3, D4, D5 and D6, switching tube Q1, Q2 and Q3, capacitor C 1 and C2 and connecting to neutral line N, wherein, optionally connected A phase or the BAT+ of connecing of K1, the optionally connected B phase of K2 or do not meet the optionally connected C phase of K3 or BAT-.The civil power work of this three-phase Vienna pfc circuit mainly completes by the Boost circuit of two positive and negative half-waves, and the civil power operation principle of each phase in three-phase circuit is identical, and the operation principle under the battery mode of A phase and C phase is also identical.
Describe with the operation principle of A circuitry phase below.
(1) civil power mode of operation:
When civil power A works positive half cycle mutually,
When Q1 opens, current direction is: civil power A phase AC (A) → K1 → L1 → Q1 → N;
When Q1 closes, current direction is: AC (A) → K1 → L1 → D1 → C1 → N;
The civil power A negative half period of working mutually,
When Q1 opens, current direction is: N → Q1 → L1 → K1 → AC (A);
When Q1 closes, current direction is: N → C2 → D2 → L1 → K1 → AC (A);
(2) battery mode:
When Vienna pfc circuit output positive half wave electric current,
When switching tube Q1 conducting, current direction is: BAT+ → K1 → L1 → Q1 → N;
When switching tube Q1 closes, current direction is: BAT+ → K1 → L1 → D1 → C1 → N;
When the negative half-wave current of Vienna pfc circuit output,
When switching tube Q3 conducting, current direction is: N → Q3 → L3 → K3 → BAT-;
When switching tube Q3 closes, current direction is: N → C2 → D6 → L3 → K3 → BAT-.
Under battery mode, B phase inductance L2 and switching tube etc. are restricted.
This Vienna pfc circuit is subject to the ripple of electric capacity generation and the impact of circuit magnetic, need to further improve, to improve the performance of power circuit.
Summary of the invention
The invention provides a kind of circuit and control method, interlock to capacitor charging by multichannel, improved the ripple frequency of electric capacity, thereby reduced the ripple of electric capacity.
A kind of circuit, comprises two bridge arm units and two electric capacity, and described two bridge arm units are respectively the first bridge arm unit and the second bridge arm unit, and described two electric capacity are respectively the first electric capacity and the second electric capacity;
Each bridge arm unit comprises respectively two diodes, an inductance and a switching tube, described two diodes are respectively the first diode and the second diode, the positive pole of described the first diode connects the negative pole of described the second diode, the junction of described the first diode and described the second diode is connected respectively the first port of described inductance and the first port of described switching tube, the second port connecting to neutral line N of described switching tube; The negative pole of described the first diode connects the first port of described the first electric capacity, and the negative pole of described the second diode connects the first port of described the second electric capacity, and the second port of the second port of described the first electric capacity and described the second electric capacity is connecting to neutral line N respectively;
The second port of the inductance of described the first bridge arm unit is used for being connected homophase AC power with the second port of the inductance of described the second bridge arm unit.
A kind of circuit control method, is applied to circuit as above, comprising:
To second port of inductance of described the first bridge arm unit and the second port input homophase alternating current of the inductance of described the second bridge arm unit,
In the time of the positive half cycle of input AC electricity,
Open the switching tube of described the first bridge arm unit, with the induction charging to described the first bridge arm unit;
Close the switching tube of described the second bridge arm unit, with to described the first capacitor charging;
After opening the switching tube of described the first bridge arm unit and closing the switching tube of described the second bridge arm unit,
Open the switching tube of described the second bridge arm unit, with the induction charging to described the second bridge arm unit;
Close the switching tube of described the first bridge arm unit, with to described the first capacitor charging;
In the time of the negative half period of input AC electricity,
Open the switching tube of described the first bridge arm unit, with the induction charging to described the first bridge arm unit;
Close the switching tube of described the second bridge arm unit, with to described the second capacitor charging;
After opening the switching tube of described the first bridge arm unit and closing the switching tube of described the second bridge arm unit,
Open the switching tube of described the second bridge arm unit, with the induction charging to described the second bridge arm unit;
Close the switching tube of described the first bridge arm unit, with to described the second capacitor charging.
The present invention not only interlocks to capacitor charging by multichannel, has improved the ripple frequency of electric capacity, has reduced the ripple of electric capacity.
Brief description of the drawings
Fig. 1 is existing three-phase Vienna pfc circuit structural representation;
Fig. 2 is a kind of electrical block diagram of the present invention;
Fig. 3 is the another kind of electrical block diagram of the present invention;
Fig. 4 is the connection diagram of a kind of battery supply of the present invention;
Fig. 5 is a kind of circuit control method schematic flow sheet of the present invention.
Embodiment
The embodiment of the present invention provides a kind of circuit, and this circuit can be applied in ups power circuit.The present invention is described in detail to enumerate embodiment below.
A kind of circuit of the embodiment of the present invention can be consulted Fig. 2, comprises two bridge arm units and two electric capacity, and described two bridge arm units are respectively the first bridge arm unit and the second bridge arm unit, and described two electric capacity are respectively the first electric capacity and the second electric capacity.
Each bridge arm unit comprises respectively two diodes, an inductance and a switching tube, described two diodes are respectively the first diode and described the second diode, the positive pole of described the first diode connects the negative pole of described the second diode, the junction of described the first diode and described the second diode is connected respectively the first port of described inductance and the first port of described switching tube, the second port connecting to neutral line N of described switching tube; The negative pole of described the first diode connects the first port of the first electric capacity, and the negative pole of described the second diode connects the first port of described the second electric capacity, and the second port of the second port of described the first electric capacity and described the second electric capacity is connecting to neutral line N respectively.
The second port of the inductance of described the first bridge arm unit is used for being connected homophase AC power with the second port of the inductance of described the second bridge arm unit.
In Fig. 2, the first bridge arm unit comprises inductance L 1, diode D1 and diode D2, and switching tube Q1, the negative pole of the cathode connecting diode D2 of diode D1, the junction of diode D1 and diode D2 is connected respectively the first port of inductance L 1 and the first port of switching tube Q1, the second port connecting to neutral line N of switching tube Q1; The negative pole of diode D1 connects the first port of capacitor C 1, and the negative pole of the second diode connects the first port of capacitor C 2, and the second port of the second port of described capacitor C 1 and capacitor C 2 is connecting to neutral line N respectively.
The second bridge arm unit comprises inductance L 2, diode D3 and diode D4, and switching tube Q2, and the connected mode of the second bridge arm unit internal components is identical with the device connected mode of the first bridge arm unit, repeats no more here.
The second port of the inductance L 1 of described the first bridge arm unit, as the input of the first brachium pontis, connects single phase alternating current power supply 201; Inductance L 2 second ports of described the second bridge arm unit, as the input of the second bridge arm unit, connect single phase alternating current power supply 201.The second port of described inductance L 1 and the second port of inductance L 2, under alternating current mode of operation, are inputted homophase alternating current from single phase alternating current power supply 201.
When the present embodiment circuit application is under alternating current (civil power) mode of operation of ups power, single phase alternating current power supply 201 is inputted homophase alternating current to inductance L 1 and inductance L 2.Open and closing switch pipe Q1 and switching tube Q2 by staggered, the first bridge arm unit and the second bridge arm unit are to the staggered charging of capacitor C 1 with to the staggered charging of capacitor C 2, the ripple frequency liter of capacitor C 1 and capacitor C 2 is doubled, equivalence improves the switching frequency of power circuit, reduce magnetic parameter and the filtering parameter of circuit, reduced the ripple of capacitor C 1 and capacitor C 2.
Preferably, described circuit also comprises the first switch, the second port of the inductance L 1 of described the first bridge arm unit is also for connecting positive direct-current power supply, and described the first switch switches connecting described AC power and connect between described positive direct-current power supply for the second port of the inductance L 1 that makes described the first bridge arm unit; Described circuit also comprises second switch, the second port of the inductance L 2 of described the second bridge arm unit is also for connecting negative DC power supply, and described second switch switches connecting described AC power and connect between described negative DC power supply for the second port of the inductance L 2 that makes described the second bridge arm unit.
In Fig. 2, inductance L 1 connects power supply by selector switch K1, can select the power supply connecting to comprise the first AC power 201 and anode BAT+.Concrete, the second port of inductance L 1, as the input of the first bridge arm unit, connects the output of selector switch K1, and the first input end of selector switch K1 connects the first AC power 201, and the second input of selector switch K1 connects BAT+.
Inductance L 2 connects power supply by selector switch K2, can select the power supply connecting to comprise the first AC power 201 and battery cathode BAT-.Concrete, the second port of inductance L 2, as the input of the second bridge arm unit, connects the output of selector switch K2, and the first input end of selector switch K2 connects the first AC power 201, and the second input of selector switch K2 connects BAT-.
As shown in Figure 4, described battery positive electrode and negative electrode are respectively the both positive and negative polarities of battery supply, and described battery supply is made up of the battery of series aiding connection, and connecting to neutral line N is located in interconnecting of the battery of described series aiding connection.
Under battery operated pattern,, in input dc power situation, the present embodiment circuit still can be worked.Switching tube Q1 and Q2 are open-minded, to inductance L 1 and L2 charging.Switching tube Q1 and Q2 close, to capacitor C 1 and C2 charging.The present embodiment circuit application is in ups power circuit, and devices use rate is high.
Introduce the circuit of a kind of three-phase input that is applied to ups power circuit below.
As shown in Figure 3, a kind of circuit comprises the first bridge arm unit, the second bridge arm unit, the 3rd bridge arm unit, the 4th bridge arm unit, the 5th bridge arm unit and the 6th bridge arm unit, and capacitor C 1 and capacitor C 2, described the first bridge arm unit, described the second bridge arm unit, described the 3rd bridge arm unit, described the 4th bridge arm unit, described the 5th bridge arm unit and described the 6th bridge arm unit have identical structure.
The first bridge arm unit comprises inductance L 1, diode D1 and diode D2, and switching tube Q1, the negative pole of the cathode connecting diode D2 of diode D1, the junction of diode D1 and diode D2 is connected respectively the first port of inductance L 1 and the first port of switching tube Q1, the second port connecting to neutral line N of switching tube Q1; The negative pole of diode D1 connects the first port of capacitor C 1, and the negative pole of the second diode connects the first port of capacitor C 2, and the second port of the second port of described capacitor C 1 and capacitor C 2 is connecting to neutral line N respectively.
The second bridge arm unit comprises inductance L 2, diode D3 and diode D4, and switching tube Q2, and the connected mode of the second bridge arm unit internal components is identical with the device connected mode of the first bridge arm unit, repeats no more here.The 3rd bridge arm unit comprises inductance L 3, diode D5 and diode D6, and switching tube Q3, and the connected mode of the 3rd bridge arm unit internal components is identical with the device connected mode of the first bridge arm unit, repeats no more here.The 4th bridge arm unit comprises inductance L 4, diode D7 and diode D8, and switching tube Q4, and the connected mode of the 4th bridge arm unit internal components is identical with the device connected mode of the first bridge arm unit, repeats no more here.The 5th bridge arm unit comprises inductance L 5, diode D9 and diode D10, and switching tube Q5, and the connected mode of the 5th bridge arm unit internal components is identical with the device connected mode of the first bridge arm unit, repeats no more here.The 6th bridge arm unit comprises inductance L 6, diode D11 and diode D12, and switching tube Q6, and the connected mode of the 6th bridge arm unit internal components is identical with the device connected mode of the first bridge arm unit, repeats no more here.
The second port of the second port of the inductance of described the first bridge arm unit and the inductance of the second bridge arm unit is for being connected the first phase place AC power of three phase mains; The second port of the second port of the inductance of described the 3rd bridge arm unit and the inductance of described the 4th bridge arm unit is for being connected the second phase place AC power of three phase mains; The second port of the second port of the inductance of described the 5th bridge arm unit and the inductance of described the 6th bridge arm unit is for being connected the third phase position AC power of three phase mains.
As shown in Figure 3, inductance L 1 connects power supply by selector switch K1, can select the power supply connecting to comprise the first phase place AC power 301 and the anode BAT+ for exporting the first phase place alternating current.Concrete, the second port of inductance L 1, as the input of the first bridge arm unit, connects the output of selector switch K1, and the first input end of selector switch K1 connects the first phase place AC power 301, and the second input of selector switch K1 connects BAT+.
Inductance L 2 connects power supply by selector switch K2, can select the power supply connecting to comprise the first phase place AC power 301 and battery cathode BAT-.Concrete, the second port of inductance L 2, as the input of the second bridge arm unit, connects the output of selector switch K2, and the first input end of described selector switch K2 connects the first phase place AC power 301, and the second input of described selector switch K2 connects BAT-.
Inductance L 3 connects power supply by selector switch K3, can select the power supply connecting to comprise the second phase place AC power 302 and BAT+.Concrete, the second port of inductance L 3, as the input of the 3rd bridge arm unit, connects the output of selector switch K3, and the first input end of selector switch K3 connects the second phase place AC power 302, and the second input of selector switch K3 connects BAT+.
Inductance L 4 connects power supply by selector switch K4, can select the power supply connecting to comprise the second phase place AC power 302 and BAT-.Concrete, the second port of inductance L 4, as the input of the 4th bridge arm unit, connects the output of selector switch K4, and the first input end of described selector switch K4 connects the second AC power 302, and the second input of described selector switch K4 connects BAT-.
Inductance L 5 connects power supply by selector switch K5, can select the power supply connecting to comprise the 3rd AC power 303 and the BAT+ for exporting third phase position alternating current.Concrete, the second port of inductance L 5, as the input of the 5th bridge arm unit, connects the output of selector switch K5, and the first input end of described selector switch K5 connects the 3rd AC power 303, and the second input of described selector switch K5 connects BAT+.
Inductance L 6 connects power supply by selector switch K6, can select the power supply connecting to comprise the 3rd AC power 303 and BAT-.Concrete, the second port of inductance L 6, as the input of the 6th bridge arm unit, connects the output of selector switch K6, and the first input end of described selector switch K6 connects the 3rd AC power 303, and the second input of described selector switch K6 connects BAT-.
As shown in Figure 4, in the present embodiment, described battery positive electrode and negative electrode are respectively the both positive and negative polarities of battery supply, and described battery supply is made up of the battery of series aiding connection, and connecting to neutral line N is located in interconnecting of the battery of described series aiding connection.
Under utility mode, the operation principle of the first bridge arm unit and the second bridge arm unit is identical with embodiment 1, and elaboration that specifically can reference example 1, repeats no more here.Because the operation principle of operation principle, the 5th bridge arm unit and the 6th bridge arm unit of the 3rd bridge arm unit and the 4th bridge arm unit is identical with the operation principle of the first bridge arm unit and the second bridge arm unit, also repeat no more here.
Preferably, input the third phase position alternating current of the second phase place alternating current, input the 5th bridge arm unit and the 6th bridge arm unit of the first phase place alternating current, input the 3rd bridge arm unit and the 4th bridge arm unit of the first bridge arm unit and the second bridge arm unit, the phase difference of the first phase place alternating current, the second phase place alternating current, third phase position alternating current is 120 degree, is conducive to reduce ripple.
Embodiment of the present invention circuit output ripple is little, is applied to USP power circuit, has improved the device performance in circuit.
A kind of circuit of the present embodiment also comprises the first switch, the second port of the inductance of described the first bridge arm unit is also for connecting positive direct-current power supply, and described the first switch switches connecting described AC power and connect between described positive direct-current power supply for the second port of the inductance L 1 that makes described the first bridge arm unit; Described circuit also comprises second switch, the second port of the inductance of described the second bridge arm unit is also for connecting negative DC power supply, and described second switch switches connecting described AC power and connect between described negative DC power supply for the second port of the inductance that makes described the second bridge arm unit; Described circuit also comprises the 3rd switch, the second port of the inductance of described the 3rd bridge arm unit is also for connecting described positive direct-current power supply, and described the 3rd switch switches connecting described the second phase place AC power and connect between described positive direct-current power supply for the second port of the inductance that makes described the 3rd bridge arm unit; Described circuit also comprises the 4th switch, the second port of the inductance of described the 4th bridge arm unit is also for connecting described negative DC power supply, and described the 4th switch switches connecting described the second phase place AC power and connect between described negative DC power supply for the second port of the inductance that makes described the 4th bridge arm unit; Described circuit also comprises the 5th switch, the second port of the inductance of described the 5th bridge arm unit is also for connecting described positive direct-current power supply, and described the 5th switch switches connecting described third phase position AC power and connect between described positive direct-current power supply for the second port of the inductance that makes described the 5th bridge arm unit; Described circuit also comprises the 6th switch, the second port of the inductance of described the 6th bridge arm unit is also for connecting described negative DC power supply, and described the 6th switch switches connecting described the second phase place AC power and connect between described negative DC power supply for the second port of the inductance that makes described the 6th bridge arm unit.
As shown in Figure 3, selector switch K1, K2, K3, K4, K5, K6 represent respectively described the first switch, described second switch, described the 3rd switch, described the 4th switch, described the 5th switch, described the 6th switch.
Under battery mode, the first to the 6th bridge arm unit can be worked simultaneously, input positive direct-current electricity first, the 3rd, the 5th bridge arm unit, for charging to capacitor C 1, input is negative galvanic second, the 4th, the 6th bridge arm unit, for charging to capacitor C 2.Therefore, under battery mode, embodiment of the present invention circuit still can be worked, and to capacitor charging, has solved the idle problem of device that existing three-phase Vienna pfc circuit exists, and has improved devices use rate.
Preferably, the switching tube in above-mentioned bridge arm unit is igbt or metal oxide semiconductor field effect tube.The frequency that igbt is selected is less than 40KHz, the field effect transistor that metal oxide semiconductor field effect tube can selected frequency is 100KHz.
Embodiment of the present invention circuit can be applied to no-break power unit, and the efficiency of no-break power unit is further improved, and this no-break power unit comprises above-described Vienna circuit of power factor correction.
For above-mentioned circuit, the present invention also provides corresponding control method.
As shown in Figure 5, a kind of circuit control method, comprising:
401, to second port of inductance of described the first bridge arm unit and the second port input homophase alternating current of the inductance of described the second bridge arm unit.
402,, in the time of the positive half cycle of the second port input AC electricity of the second port of the inductance to described the first bridge arm unit and the inductance of described the second bridge arm unit, open the switching tube of described the first bridge arm unit, with the induction charging to described the first bridge arm unit; Close the switching tube of described the second bridge arm unit, with to described the first capacitor charging.
403,, after opening the switching tube of described the first bridge arm unit and closing the switching tube of described the second bridge arm unit, open the switching tube of described the second bridge arm unit, with the induction charging to described the second bridge arm unit; Close the switching tube of described the first bridge arm unit, with to described the first capacitor charging.
404,, in the time of the negative half period of the second port input AC electricity of the second port of the inductance to described the first bridge arm unit and the inductance of described the second bridge arm unit, open the switching tube of described the first bridge arm unit, with the induction charging to described the first bridge arm unit; Close the switching tube of described the second bridge arm unit, with to described the second capacitor charging.
405,, after opening the switching tube of described the first bridge arm unit and closing the switching tube of described the second bridge arm unit, open the switching tube of described the second bridge arm unit, with the induction charging to described the second bridge arm unit; Close the switching tube of described the first bridge arm unit, with to described the second capacitor charging.
Preferably, open identical with the frequency of switching tube of opening and closing described the second bridge arm unit with the frequency of switching tube of closing described the first bridge arm unit, to give in turn the first electric capacity and the second capacitor charging by the first bridge arm unit and the second bridge arm unit, reduce electric capacity ripple.
In conjunction with Fig. 2, control method of the present invention is elaborated.
Under alternating current mode of operation (civil power mode of operation), working method and the prior art of the first bridge arm unit and the second bridge arm unit are different, and the first bridge arm unit and the second bridge arm unit are to carry out paralleling and interleaving work.Concrete,
To the first bridge arm unit and the second bridge arm unit input homophase alternating current, when the waveform of the homophase alternating current of input is during in positive half cycle,
Switching tube Q1 is open-minded, and the current direction of the first bridge arm unit is: single phase alternating current power supply → selector switch K1 → inductance L 1 → switching tube Q1 → and, charge to inductance L 1.
Switching tube Q2 closes, and the current direction of the second bridge arm unit is: single phase alternating current power supply → selector switch K2 → inductance L 2 → diode D3 → capacitor C 1 → connecting to neutral line N, charges to capacitor C 1.
Staggered opening after the switching tube of the first bridge arm unit and the second bridge arm unit,
Switching tube Q2 is open-minded, and the current direction of the second bridge arm unit is: single phase alternating current power supply → selector switch K2 → inductance L 2 → switching tube Q2 → connecting to neutral line N, charges to inductance L 2.
Switching tube Q1 closes, and the current direction of the first bridge arm unit is: single phase alternating current power supply → selector switch K1 → inductance L 1 → diode D1 → capacitor C 1 → connecting to neutral line N, charges to capacitor C 1.
When the waveform of this second phase place alternating current is during in negative half period,
Switching tube Q1 is open-minded, and the current direction of the first bridge arm unit is: connecting to neutral line N → switching tube Q1 → inductance L 1 → selector switch K1 → single phase alternating current power supply, charges to inductance L 1.
Switching tube Q2 closes, and the current direction of the second bridge arm unit is: connecting to neutral line N → capacitor C 2 → diode D4 → inductance L 2 → selector switch K2 → single phase alternating current power supply, charges to capacitor C 2.
Staggered opening after the switching tube of the first bridge arm unit and the second bridge arm unit,
Switching tube Q2 is open-minded, and the current direction of the second bridge arm unit is: connecting to neutral line N → switching tube Q2 → inductance L 2 → selector switch K2 → single phase alternating current power supply, charges to inductance L 2.
Switching tube Q1 closes, and the current direction of the first bridge arm unit is: connecting to neutral line N → capacitor C 2 → diode D2 → inductance L 1 → selector switch K1 → single phase alternating current power supply, charges to capacitor C 2.
Interleaved logical switching tube Q1 and Q2, interlocked respectively and charged to capacitor C 1 and capacitor C 2 by the first bridge arm unit and the second bridge arm unit, reduced the ripple of capacitor C 1 and capacitor C 2.
The present invention also provides a kind of circuit control method, comprising:
Input the first phase place alternating current of described three phase mains to the second port of the inductance of described the first bridge arm unit and described the second bridge arm unit.
In the time of the positive half cycle of input the first phase place alternating current, open the switching tube of described the first bridge arm unit, with the induction charging to described the first bridge arm unit; Close the switching tube of described the second bridge arm unit, with to described the first capacitor charging.
After opening the switching tube of described the first bridge arm unit and closing the switching tube of described the second bridge arm unit, open the switching tube of described the second bridge arm unit, with the induction charging to described the second bridge arm unit; Close the switching tube of described the first bridge arm unit, with to described the first capacitor charging.
In the time of the negative half period of input the first phase place alternating current, open the switching tube of described the first bridge arm unit, with the induction charging to described the first bridge arm unit; Close the switching tube of described the second bridge arm unit, with to described the second capacitor charging.
After opening the switching tube of described the first bridge arm unit and closing the switching tube of described the second bridge arm unit, open the switching tube of described the second bridge arm unit, with the induction charging to described the second bridge arm unit; Close the switching tube of described the first bridge arm unit, with to described the second capacitor charging.
As shown in Figure 3, concrete, input the first phase place alternating current to the first bridge arm unit and the second bridge arm unit, when the waveform of the first phase place alternating current of input is during in positive half cycle,
Switching tube Q1 is open-minded, and the current direction of the first bridge arm unit is: first phase place AC power 301 → selector switch K1 → inductance L 1 → switching tube Q1 → and, charge to inductance L 1.
Switching tube Q2 closes, and the current direction of the second bridge arm unit is: first phase place AC power 301 → selector switch K2 → inductance L 2 → diode D3 → capacitor C 1 → connecting to neutral line N, charges to capacitor C 1.
Staggered opening after the switching tube of the first bridge arm unit and the second bridge arm unit,
Switching tube Q2 is open-minded, and the current direction of the second bridge arm unit is: first phase place AC power 301 → selector switch K2 → inductance L 2 → switching tube Q2 → connecting to neutral line N, charges to inductance L 2.
Switching tube Q1 closes, and the current direction of the first bridge arm unit is: first phase place AC power 301 → selector switch K1 → inductance L 1 → diode D1 → capacitor C 1 → connecting to neutral line N, charges to capacitor C 1.
When the waveform of the first phase place alternating current is during in negative half period,
Switching tube Q1 is open-minded, and the current direction of the first bridge arm unit is: connecting to neutral line N → switching tube Q1 → inductance L 1 → selector switch K1 → the first phase place AC power 301, charge to inductance L 1.
Switching tube Q2 closes, and the current direction of the second bridge arm unit is: connecting to neutral line N → capacitor C 2 → diode D4 → inductance L 2 → selector switch K2 → the first phase place AC power 301, charge to capacitor C 2.
Staggered opening after the switching tube of the first bridge arm unit and the second bridge arm unit,
Switching tube Q2 is open-minded, and the current direction of the second bridge arm unit is: connecting to neutral line N → switching tube Q2 → inductance L 2 → selector switch K2 → the first phase place AC power 301, charge to inductance L 2.
Switching tube Q1 closes, and the current direction of the first bridge arm unit is: connecting to neutral line N → capacitor C 2 → diode D2 → inductance L 1 → selector switch K1 → the first phase place AC power 301, charge to capacitor C 2.
Interleaved logical switching tube Q1 and Q2, interlocked respectively and charged to capacitor C 1 and capacitor C 2 by the first bridge arm unit and the second bridge arm unit, reduced the ripple of capacitor C 1 and capacitor C 2.
Preferably, control method of the present invention also comprises:
In the time that described the first switching over connects described positive direct-current power supply to the second port of inductance that makes described the first bridge arm unit,
To the second port input positive direct-current electricity of the inductance of described the first bridge arm unit;
Open the switching tube of described the first bridge arm unit, with the induction charging to described the first bridge arm unit;
Close the switching tube of described the first bridge arm unit, with to described the first capacitor charging.
In the time that described second switch is switched to the described negative DC power supply of the second port connection of the inductance that makes described the second bridge arm unit,
To the negative direct current of the second port input of the inductance of described the second bridge arm unit;
Open the switching tube of described the second bridge arm unit, with the induction charging to described the second bridge arm unit;
Close the switching tube of described the second bridge arm unit, with to described the second capacitor charging.
As shown in Figure 2, by selector switch K1, the second port of the inductance L of described the first bridge arm unit 1 is connected with positive direct-current power supply BAT+, to the second port input positive direct-current electricity of inductance L 1;
Open switching tube Q1, the current direction of the first bridge arm unit is: positive direct-current power supply BAT+ → selector switch K1 → inductance L 1 → switching tube Q1 → connecting to neutral line N, charges to inductance L 1.
Closing switch pipe Q1, the current direction of the first bridge arm unit is: positive direct-current power supply BAT+ → selector switch K1 → inductance L 1 → diode D1 → capacitor C 1 → connecting to neutral line N, charges to capacitor C 1.
By selector switch K2, the second port of the inductance L of described the second bridge arm unit 2 is connected with negative DC power supply BAT-, to the negative direct current of the second port input of inductance L 2;
Open switching tube Q2, the current direction of the second bridge arm unit is: connecting to neutral line N → switching tube Q2 → inductance L 2 → selector switch K2 → negative DC power supply BAT-, charges to inductance L 2.
Closing switch pipe Q2, the current direction of the second bridge arm unit is: connecting to neutral line N → capacitor C 2 → diode D4 → inductance L 2 → selector switch K2 → negative DC power supply BAT-, charges to capacitor C 2.
The present invention has realized under battery mode, and circuit still can make full use of device and carry out work, and not idle device has improved devices use rate.
Preferably, control method of the present invention also comprises:
Input the second phase place alternating current of described three phase mains to described the 3rd bridge arm unit and described the 4th bridge arm unit.
In the time of the positive half cycle of described the second phase place alternating current of input, open the switching tube of described the 3rd bridge arm unit, with the induction charging to described the 3rd bridge arm unit; Close the switching tube of described the 4th bridge arm unit, with to described the first capacitor charging.
After opening the switching tube of described the 3rd bridge arm unit and closing the switching tube of described the 4th bridge arm unit, open the switching tube of described the 4th bridge arm unit, with the induction charging to described the 4th bridge arm unit; Close the switching tube of described the 3rd bridge arm unit, with to described the first capacitor charging.
In the time of the negative half period of described the second phase place alternating current of input, open the switching tube of described the 3rd bridge arm unit, with the induction charging to described the 3rd bridge arm unit; Close the switching tube of described the 4th bridge arm unit, with to described the second capacitor charging.
After opening the switching tube of described the 3rd bridge arm unit and closing the switching tube of described the 4th bridge arm unit, open the switching tube of described the 4th bridge arm unit, with the induction charging to described the 4th bridge arm unit; Close the switching tube of described the 3rd bridge arm unit, with to described the second capacitor charging.
As shown in Figure 3, concrete, input the second phase place alternating current to the 3rd bridge arm unit and the 4th bridge arm unit, when the waveform of the second phase place alternating current is during in positive half cycle,
Switching tube Q3 is open-minded, and the current direction of the 3rd bridge arm unit is: second phase place AC power 302 → selector switch K3 → inductance L 3 → switching tube Q3 → connecting to neutral line N, charges to inductance L 3.
Switching tube Q4 closes, and the current direction of the 4th bridge arm unit is: second phase place AC power 302 → selector switch K4 → inductance L 4 → diode D7 → capacitor C 1 → connecting to neutral line N, charges to capacitor C 1.
The staggered switching tube of opening the 3rd bridge arm unit and the 4th bridge arm unit,
Switching tube Q4 is open-minded, and the current direction of the 4th bridge arm unit is: second phase place AC power 302 → selector switch K4 → inductance L 4 → switching tube Q4 → connecting to neutral line N, charges to inductance L 4.
Switching tube Q3 closes, and the current direction of the 3rd bridge arm unit is: second phase place AC power 302 → selector switch K3 → inductance L 3 → diode D5 → capacitor C 1 → connecting to neutral line N, charges to capacitor C 1.
When the waveform of the second phase place alternating current is during in negative half period,
Switching tube Q3 is open-minded, and the current direction of the 3rd bridge arm unit is: connecting to neutral line N → switching tube Q3 → inductance L 3 → selector switch K3 → the second phase place AC power 302, charge to inductance L 3.
Switching tube Q4 closes, and the current direction of the 4th bridge arm unit is: connecting to neutral line N → capacitor C 2 → diode D8 → inductance L 4 → selector switch K4 → the second phase place AC power 302, charge to capacitor C 2.
Staggered opening after the switching tube of the first bridge arm unit and the second bridge arm unit,
Switching tube Q4 is open-minded, and the current direction of the 4th bridge arm unit is: connecting to neutral line N → switching tube Q4 → inductance L 4 → selector switch K4 → the second phase place AC power 302, charge to inductance L 4.
Switching tube Q3 closes, and the current direction of the 3rd bridge arm unit is: connecting to neutral line N → capacitor C 2 → diode D6 → inductance L 3 → selector switch K3 → the second phase place AC power 302, charge to capacitor C 2.
Interleaved logical switching tube Q3 and Q4, interlocked respectively and charged to capacitor C 1 and capacitor C 2 by the 3rd bridge arm unit and the 4th bridge arm unit, reduced the ripple of capacitor C 1 and capacitor C 2.
Input the third phase position alternating current of described three phase mains to described the 5th bridge arm unit and described the 6th bridge arm unit.
In the time of the positive half cycle of input described third phase position alternating current, open the switching tube of described the 5th bridge arm unit, with the induction charging to described the 5th bridge arm unit; Close the switching tube of described the 6th bridge arm unit, with to described the first capacitor charging.
After opening the switching tube of described the 5th bridge arm unit and closing the switching tube of described the 6th bridge arm unit, open the switching tube of described the 6th bridge arm unit, with the induction charging to described the 6th bridge arm unit; Close the switching tube of described the 5th bridge arm unit, with to described the first capacitor charging.
In the time of the negative half period of input described third phase position alternating current, open the switching tube of described the 5th bridge arm unit, with the induction charging to described the 5th bridge arm unit; Close the switching tube of described the 6th bridge arm unit, with to described the second capacitor charging.
After opening the switching tube of described the 5th bridge arm unit and closing the switching tube of described the 6th bridge arm unit, open the switching tube of described the 6th bridge arm unit, with the induction charging to described the 6th bridge arm unit; Close the switching tube of described the 5th bridge arm unit, with to described the second capacitor charging.
As shown in Figure 3, concrete, to the 5th bridge arm unit and the 6th bridge arm unit input third phase position alternating current, when the waveform of the third phase position alternating current of input is during in positive half cycle,
Switching tube Q5 is open-minded, and the current direction of the 5th bridge arm unit is: third phase position AC power 303 → selector switch K5 → inductance L 5 → switching tube Q5 → connecting to neutral line N, charges to inductance L 5.
Switching tube Q6 closes, and the current direction of the 6th bridge arm unit is: third phase position AC power 303 → selector switch K6 → inductance L 6 → diode D11 → capacitor C 1 → connecting to neutral line N, charges to capacitor C 1.
The staggered switching tube of opening the 5th bridge arm unit and the 6th bridge arm unit,
Switching tube Q6 is open-minded, and the current direction of the 5th bridge arm unit is: third phase position AC power 303 → selector switch K6 → inductance L 6 → switching tube Q6 → connecting to neutral line N, charges to inductance L 6.
Switching tube Q5 closes, and the current direction of the 3rd bridge arm unit is: third phase position AC power 303 → selector switch K5 → inductance L 5 → diode D9 → capacitor C 1 → connecting to neutral line N, charges to capacitor C 1.
When the waveform of this third phase position alternating current is during in negative half period,
Switching tube Q5 is open-minded, and the current direction of the 5th bridge arm unit is: connecting to neutral line N → switching tube Q5 → inductance L 5 → selector switch K5 → third phase position AC power 303, charge to inductance L 5.
Switching tube Q6 closes, and the current direction of the 6th bridge arm unit is: connecting to neutral line N → capacitor C 2 → diode D12 → inductance L 6 → selector switch K6 → third phase position AC power 303, charge to capacitor C 2.
Staggered opening after the switching tube of the 5th bridge arm unit and the 6th bridge arm unit,
Switching tube Q6 is open-minded, and the current direction of the 6th bridge arm unit is: connecting to neutral line N → switching tube Q6 → inductance L 6 → selector switch K6 → third phase position AC power 303, charge to inductance L 6.
Switching tube Q5 closes, and the current direction of the 5th bridge arm unit is: connecting to neutral line N → capacitor C 2 → diode D10 → inductance L 5 → selector switch K5 → third phase position AC power 303, charge to capacitor C 2.
Interleaved logical switching tube Q5 and Q6, interlocked respectively and charged to capacitor C 1 and capacitor C 2 by the 5th bridge arm unit and the 6th bridge arm unit, reduced the ripple of capacitor C 1 and capacitor C 2.
The above-mentioned circuit that includes six bridge arm units can be applied in powerful UpS power supply, by the control method of the embodiment of the present invention, can reduce electric capacity ripple in circuit, thereby reduces the impact of ripple on circuit devcie performance, improves the overall performance of circuit.
Preferably, control method of the present invention also comprises:
Connect described positive direct-current power supply at described the first switching over to the second port of the inductance that makes described the first bridge arm unit, when described the 3rd switching over connects described positive direct-current power supply to the second port of inductance that makes described the 3rd bridge arm unit, to the negative direct current of the second port input of the inductance of described the first bridge arm unit, to the second port input positive direct-current electricity of the inductance of described the 3rd bridge arm unit; Open the switching tube of described the first bridge arm unit, with the induction charging to described the first bridge arm unit; Close the switching tube of described the 3rd bridge arm unit, with to described the first capacitor charging.
After opening the switching tube of described the first bridge arm unit and closing the switching tube of the 3rd bridge arm unit, open the switching tube of described the 3rd bridge arm unit, with the induction charging to described the 3rd bridge arm unit; Close the switching tube of described the first bridge arm unit, with to described the first capacitor charging.
The second port that is switched to the inductance that makes described the second bridge arm unit at described second switch connects described positive direct-current power supply, described the 4th switching over connects when described negative DC power supply to the second port of the inductance that makes described the 4th bridge arm unit, to the negative direct current of the second port input of the inductance of described the second bridge arm unit, to the negative direct current of the second port input of the inductance of described the 4th bridge arm unit.Open the switching tube of described the second bridge arm unit, with the induction charging to described the second bridge arm unit; Close the switching tube of described the 4th bridge arm unit, with to described the second capacitor charging.
After opening the switching tube of described the second bridge arm unit and closing the switching tube of described the 4th bridge arm unit, open the switching tube of described the 4th bridge arm unit, with the induction charging to described the 4th bridge arm unit; Close the switching tube of described the second bridge arm unit, with to described the second capacitor charging.
Under battery mode, the staggered switching tube of the first bridge arm unit and the switching tube of the 3rd bridge arm unit opened, interlock to the first capacitor charging, make in the time of the induction charging to the first bridge arm unit or during to the induction charging of the second bridge arm unit, the first electric capacity can both obtain charging.In like manner, interlock and open the switching tube of the second bridge arm unit and the switching tube of the 4th bridge arm unit, interlock to the second capacitor charging.Interlock to the second capacitor charging, make in the time of the induction charging to the second bridge arm unit or during to the induction charging of the 4th bridge arm unit, the second electric capacity can both obtain charging.
Preferably, control method of the present invention also comprises:
In the time that described the 5th switching over connects described positive direct-current power supply to the second port of inductance that makes described the 5th bridge arm unit, to the second port input positive direct-current electricity of the inductance of described the 5th bridge arm unit.Open the switching tube of described the 5th bridge arm unit, with the induction charging to described the 5th bridge arm unit; Close the switching tube of described the 5th bridge arm unit, with to described the first capacitor charging.
Connect when described negative DC power supply to the second port of the inductance that makes described the 6th bridge arm unit at described the 6th switching over, to the negative direct current of the second port input of the inductance of described the 6th bridge arm unit.Open the switching tube of described the 6th bridge arm unit, with the induction charging to described the 6th bridge arm unit; Close the switching tube of described the 6th bridge arm unit, with to described the second capacitor charging.
Under battery mode, the first bridge arm unit, the second bridge arm unit, the 3rd bridge arm unit, the 4th bridge arm unit, the 5th bridge arm unit, the 6th bridge arm unit can be worked simultaneously, avoid device idle.
The staggered switching tube of opening the first bridge arm unit and the 3rd bridge arm unit just below, and the staggered switching tube of opening the second bridge arm unit and the 4th bridge arm unit is example, is elaborated in conjunction with Fig. 3.
To second port of inductance of the first bridge arm unit and the second port input positive direct-current electricity of the inductance of the 3rd bridge arm unit,
Open switching tube Q1, closing switch pipe Q3, the current direction of the first bridge arm unit is: BAT+ → selector switch K1 → inductance L 1 → switching tube Q1 → connecting to neutral line N, charges to inductance L 1; The current direction of the 3rd bridge arm unit is: BAT+ → selector switch K3 → inductance L 3 → diode D5 → capacitor C 1 → connecting to neutral line N, charges to capacitor C 1.
After opening switching tube Q1 and closing switch pipe Q3, open switching tube Q3, closing switch pipe Q1, the current direction of the 3rd bridge arm unit is: BAT+ → selector switch K3 → inductance L 3 → switching tube Q3 → connecting to neutral line N, charges to inductance L 3; The current direction of the first bridge arm unit is: BAT+ → selector switch K1 → inductance L 1 → diode D1 → capacitor C 1 → connecting to neutral line N, charges to capacitor C 1.
Interlock and charge to capacitor C 1 by the first bridge arm unit and the 3rd bridge arm unit, can reduce the ripple of capacitor C 1.
In like manner, by the 3rd and the 5th bridge arm unit, or first and the 5th bridge arm unit also can interlock and charge to capacitor C 2, can reduce the ripple of capacitor C 2.
To second port of inductance of the second bridge arm unit and the negative direct current of the second port input of the inductance of the 4th bridge arm unit.
Open switching tube Q2, closing switch pipe Q4, the current direction of the second bridge arm unit is: connecting to neutral line N → switching tube Q2 → inductance L 2 → selector switch K2 → BAT-, charges to inductance L 2; The current direction of the 4th bridge arm unit is: connecting to neutral line N → capacitor C 2 → diode D8 → inductance L 4 → selector switch K4 → BAT-, charges to capacitor C 2.
After opening switching tube Q2 and closing switch pipe Q4, open switching tube Q4, closing switch pipe Q2, the current direction of the 4th bridge arm unit is: connecting to neutral line N → switching tube Q4 → inductance L 4 → selector switch K4 → BAT-, charges to inductance L 4; The current direction of the second bridge arm unit is: connecting to neutral line N-capacitor C 2 → diode D4 → inductance L 2 → selector switch K2 → BAT-, charges to capacitor C 2.
Interlock and charge to capacitor C 2 by the second bridge arm unit and the 4th bridge arm unit, can reduce the ripple of capacitor C 2, can uninterruptedly charge to capacitor C 2 simultaneously.
In like manner, by second and the 6th bridge arm unit, or the 4th and the 6th bridge arm unit also can interlock and charge to capacitor C 2, can reduce the ripple of capacitor C 2, can uninterruptedly charge to capacitor C 2 simultaneously.
The circuit that includes six bridge arm units can be applied in powerful ups power, by the control method of the embodiment of the present invention, not only can reduce electric capacity ripple in circuit, and compared to existing three-phase Vienna pfc circuit, improve the utilance of device under battery mode.
By embodiment, a kind of circuit of the present invention and control method thereof are described in detail above, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; , for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention meanwhile.
Claims (8)
1. a circuit, is characterized in that,
Comprise two bridge arm units and two electric capacity, described two bridge arm units are respectively the first bridge arm unit and the second bridge arm unit, and described two electric capacity are respectively the first electric capacity and the second electric capacity;
Each bridge arm unit comprises respectively two diodes, an inductance and a switching tube, described two diodes are respectively the first diode and the second diode, the positive pole of described the first diode connects the negative pole of described the second diode, the junction of described the first diode and described the second diode is connected respectively the first port of described inductance and the first port of described switching tube, the second port connecting to neutral line N of described switching tube; The negative pole of described the first diode connects the first port of described the first electric capacity, and the positive pole of described the second diode connects the first port of described the second electric capacity, and the second port of the second port of described the first electric capacity and described the second electric capacity is connecting to neutral line N respectively;
The second port of the inductance of described the first bridge arm unit is used for being connected homophase AC power with the second port of the inductance of described the second bridge arm unit;
Described circuit also comprises the first switch, the second port of the inductance of described the first bridge arm unit is also for connecting positive direct-current power supply, and described the first switch switches connecting described AC power and connect between described positive direct-current power supply for the second port of the inductance that makes described the first bridge arm unit;
Described circuit also comprises second switch, the second port of the inductance of described the second bridge arm unit is also for connecting negative DC power supply, and described second switch switches connecting described AC power and connect between described negative DC power supply for the second port of the inductance that makes described the second bridge arm unit.
2. circuit according to claim 1, it is characterized in that, also comprise the 3rd bridge arm unit, the 4th bridge arm unit, the 5th bridge arm unit, the 6th bridge arm unit, described the 3rd bridge arm unit, described the 4th bridge arm unit, described the 5th bridge arm unit, described the 6th bridge arm unit comprise respectively and the identical structure of described the first bridge arm unit;
The second port of the second port of the inductance of described the 3rd bridge arm unit and the inductance of described the 4th bridge arm unit is for being connected the second phase place AC power of three phase mains;
The second port of the second port of the inductance of described the 5th bridge arm unit and the inductance of described the 6th bridge arm unit is for being connected the third phase position AC power of three phase mains;
The second port of the second port of the inductance of described the first bridge arm unit and the inductance of described the second bridge arm unit is for being connected the first phase place AC power of three phase mains.
3. circuit according to claim 2, is characterized in that,
Described circuit also comprises the 3rd switch, the second port of the inductance of described the 3rd bridge arm unit is also for connecting described positive direct-current power supply, and described the 3rd switch switches connecting described the second phase place AC power and connect between described positive direct-current power supply for the second port of the inductance that makes described the 3rd bridge arm unit;
Described circuit also comprises the 4th switch, the second port of the inductance of described the 4th bridge arm unit is also for connecting described negative DC power supply, and described the 4th switch switches connecting described the second phase place AC power and connect between described negative DC power supply for the second port of the inductance that makes described the 4th bridge arm unit;
Described circuit also comprises the 5th switch, the second port of the inductance of described the 5th bridge arm unit is also for connecting described positive direct-current power supply, and described the 5th switch switches connecting described third phase position AC power and connect between described positive direct-current power supply for the second port of the inductance that makes described the 5th bridge arm unit;
Described circuit also comprises the 6th switch, the second port of the inductance of described the 6th bridge arm unit is also for connecting described negative DC power supply, and described the 6th switch switches connecting described third phase position AC power and connect between described negative DC power supply for the second port of the inductance that makes described the 6th bridge arm unit.
4. circuit according to claim 1, is characterized in that, described switching tube is igbt or metal oxide semiconductor field effect tube.
5. a circuit control method, is applied to circuit as claimed in claim 1, it is characterized in that, comprising:
To second port of inductance of described the first bridge arm unit and the second port input homophase alternating current of the inductance of described the second bridge arm unit,
In the time of the positive half cycle of input AC electricity,
Open the switching tube of described the first bridge arm unit, with the induction charging to described the first bridge arm unit;
Close the switching tube of described the second bridge arm unit, with to described the first capacitor charging;
After opening the switching tube of described the first bridge arm unit and closing the switching tube of described the second bridge arm unit,
Open the switching tube of described the second bridge arm unit, with the induction charging to described the second bridge arm unit;
Close the switching tube of described the first bridge arm unit, with to described the first capacitor charging;
In the time of the negative half period of input AC electricity,
Open the switching tube of described the first bridge arm unit, with the induction charging to described the first bridge arm unit;
Close the switching tube of described the second bridge arm unit, with to described the second capacitor charging;
After opening the switching tube of described the first bridge arm unit and closing the switching tube of described the second bridge arm unit,
Open the switching tube of described the second bridge arm unit, with the induction charging to described the second bridge arm unit;
Close the switching tube of described the first bridge arm unit, with to described the second capacitor charging;
Described circuit control method also comprises: in the time that described the first switching over connects described positive direct-current power supply to the second port of inductance that makes described the first bridge arm unit,
To the second port input positive direct-current electricity of the inductance of described the first bridge arm unit;
Open the switching tube of described the first bridge arm unit, with the induction charging to described the first bridge arm unit;
Close the switching tube of described the first bridge arm unit, with to described the first capacitor charging;
In the time that described second switch is switched to the described negative DC power supply of the second port connection of the inductance that makes described the second bridge arm unit,
To the negative direct current of the second port input of the inductance of described the second bridge arm unit;
Open the switching tube of described the second bridge arm unit, with the induction charging to described the second bridge arm unit;
Close the switching tube of described the second bridge arm unit, with to described the second capacitor charging.
6. circuit control method according to claim 5, is applied to circuit as claimed in claim 2, it is characterized in that, also comprises:
Input the second phase place alternating current of described three phase mains to described the 3rd bridge arm unit and described the 4th bridge arm unit;
In the time of the positive half cycle of described the second phase place alternating current of input,
Open the switching tube of described the 3rd bridge arm unit, with the induction charging to described the 3rd bridge arm unit;
Close the switching tube of described the 4th bridge arm unit, with to described the first capacitor charging;
After opening the switching tube of described the 3rd bridge arm unit and closing the switching tube of described the 4th bridge arm unit,
Open the switching tube of described the 4th bridge arm unit, with the induction charging to described the 4th bridge arm unit;
Close the switching tube of described the 3rd bridge arm unit, with to described the first capacitor charging;
In the time of the negative half period of described the second phase place alternating current of input,
Open the switching tube of described the 3rd bridge arm unit, with the induction charging to described the 3rd bridge arm unit;
Close the switching tube of described the 4th bridge arm unit, with to described the second capacitor charging;
After opening the switching tube of described the 3rd bridge arm unit and closing the switching tube of described the 4th bridge arm unit,
Open the switching tube of described the 4th bridge arm unit, with the induction charging to described the 4th bridge arm unit;
Close the switching tube of described the 3rd bridge arm unit, with to described the second capacitor charging;
Input the third phase position alternating current of described three phase mains to described the 5th bridge arm unit and described the 6th bridge arm unit, in the time of the positive half cycle of input described third phase position alternating current,
Open the switching tube of described the 5th bridge arm unit, with the induction charging to described the 5th bridge arm unit;
Close the switching tube of described the 6th bridge arm unit, with to described the first capacitor charging;
After opening the switching tube of described the 5th bridge arm unit and closing the switching tube of described the 6th bridge arm unit,
Open the switching tube of described the 6th bridge arm unit, with the induction charging to described the 6th bridge arm unit;
Close the switching tube of described the 5th bridge arm unit, with to described the first capacitor charging;
In the time of the negative half period of input described third phase position alternating current,
Open the switching tube of described the 5th bridge arm unit, with the induction charging to described the 5th bridge arm unit;
Close the switching tube of described the 6th bridge arm unit, with to described the second capacitor charging;
After opening the switching tube of described the 5th bridge arm unit and closing the switching tube of described the 6th bridge arm unit,
Open the switching tube of described the 6th bridge arm unit, with the induction charging to described the 6th bridge arm unit;
Close the switching tube of described the 5th bridge arm unit, with to described the second capacitor charging;
Describedly be specially to described the first bridge arm unit and described the second bridge arm unit input homophase alternating current: the first phase place alternating current of inputting described three phase mains to described the first bridge arm unit and described the second bridge arm unit.
7. circuit control method according to claim 6, is applied to circuit as claimed in claim 3, it is characterized in that, also comprises:
Connect described positive direct-current power supply at described the first switching over to the second port of the inductance that makes described the first bridge arm unit, when described the 3rd switching over connects described positive direct-current power supply to the second port of inductance that makes described the 3rd bridge arm unit, to the second port input positive direct-current electricity of the inductance of described the first bridge arm unit, to the second port input positive direct-current electricity of the inductance of described the 3rd bridge arm unit;
Open the switching tube of described the first bridge arm unit, with the induction charging to described the first bridge arm unit;
Close the switching tube of described the 3rd bridge arm unit, with to described the first capacitor charging;
After opening the switching tube of described the first bridge arm unit and closing the switching tube of the 3rd bridge arm unit,
Open the switching tube of described the 3rd bridge arm unit, with the induction charging to described the 3rd bridge arm unit;
Close the switching tube of described the first bridge arm unit, with to described the first capacitor charging;
The second port that is switched to the inductance that makes described the second bridge arm unit at described second switch connects described negative DC power supply, described the 4th switching over connects when described negative DC power supply to the second port of the inductance that makes described the 4th bridge arm unit, to the negative direct current of the second port input of the inductance of described the second bridge arm unit, to the negative direct current of the second port input of the inductance of described the 4th bridge arm unit
Open the switching tube of described the second bridge arm unit, with the induction charging to described the second bridge arm unit;
Close the switching tube of described the 4th bridge arm unit, with to described the second capacitor charging;
After opening the switching tube of described the second bridge arm unit and closing the switching tube of described the 4th bridge arm unit,
Open the switching tube of described the 4th bridge arm unit, with the induction charging to described the 4th bridge arm unit;
Close the switching tube of described the second bridge arm unit, with to described the second capacitor charging.
8. circuit control method according to claim 7, is applied to circuit as claimed in claim 3, it is characterized in that, also comprises:
In the time that described the 5th switching over connects described positive direct-current power supply to the second port of inductance that makes described the 5th bridge arm unit, to the second port input positive direct-current electricity of the inductance of described the 5th bridge arm unit;
Open the switching tube of described the 5th bridge arm unit, with the induction charging to described the 5th bridge arm unit;
Close the switching tube of described the 5th bridge arm unit, with to described the first capacitor charging;
Connect when described negative DC power supply to the second port of the inductance that makes described the 6th bridge arm unit at described the 6th switching over, to the negative direct current of the second port input of the inductance of described the 6th bridge arm unit;
Open the switching tube of described the 6th bridge arm unit, with the induction charging to described the 6th bridge arm unit;
Close the switching tube of described the 6th bridge arm unit, with to described the second capacitor charging.
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| CN102664542B (en) * | 2012-04-27 | 2014-09-03 | 华为技术有限公司 | Circuit and control method thereof |
| CN105071670A (en) * | 2015-08-13 | 2015-11-18 | 厦门科华恒盛股份有限公司 | Three-phase rectifying boost circuit, control method thereof and uninterruptible power supply |
| CN105141153B (en) * | 2015-08-13 | 2018-07-24 | 厦门科华恒盛股份有限公司 | A kind of three phase rectifier booster circuit and its control method and uninterruptible power supply |
| CN106786850A (en) * | 2016-11-30 | 2017-05-31 | 深圳市盛弘电气股份有限公司 | The charging system and method for a kind of compatible alternating current-direct current input |
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| US5808882A (en) * | 1995-12-28 | 1998-09-15 | Kabushiki Kaisha Toshiba | Three-phase bridge rectifier |
| CN1610230A (en) * | 2004-11-05 | 2005-04-27 | 北京工业大学 | Three-phase power factor correcting circuit with AC boosting mode |
| CN101860192A (en) * | 2010-03-30 | 2010-10-13 | 艾默生网络能源有限公司 | Three-state three-level PFC circuit and multi-state three-level PFC circuit |
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| BR9907351A (en) * | 1999-12-22 | 2001-08-07 | Ericsson Telecomunicacoees S A | Control method and circuit for three-level three-level elevator rectifier |
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| US5808882A (en) * | 1995-12-28 | 1998-09-15 | Kabushiki Kaisha Toshiba | Three-phase bridge rectifier |
| CN1610230A (en) * | 2004-11-05 | 2005-04-27 | 北京工业大学 | Three-phase power factor correcting circuit with AC boosting mode |
| CN101860192A (en) * | 2010-03-30 | 2010-10-13 | 艾默生网络能源有限公司 | Three-state three-level PFC circuit and multi-state three-level PFC circuit |
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