CN112865508A - Single-phase three-level power factor correction circuit of novel asymmetric T-shaped bridge - Google Patents

Single-phase three-level power factor correction circuit of novel asymmetric T-shaped bridge Download PDF

Info

Publication number
CN112865508A
CN112865508A CN202110121174.3A CN202110121174A CN112865508A CN 112865508 A CN112865508 A CN 112865508A CN 202110121174 A CN202110121174 A CN 202110121174A CN 112865508 A CN112865508 A CN 112865508A
Authority
CN
China
Prior art keywords
diode
bridge
power
capacitor
switch tube
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110121174.3A
Other languages
Chinese (zh)
Inventor
马辉
邹旭
敬成
徐甜川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Three Gorges University CTGU
Original Assignee
China Three Gorges University CTGU
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Three Gorges University CTGU filed Critical China Three Gorges University CTGU
Priority to CN202110121174.3A priority Critical patent/CN112865508A/en
Publication of CN112865508A publication Critical patent/CN112865508A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
    • H02M1/4208—Arrangements for improving power factor of AC input
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/12—Arrangements for reducing harmonics from ac input or output
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/14—Arrangements for reducing ripples from dc input or output
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/66—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal
    • H02M7/68—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters
    • H02M7/72—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/79—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/797—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

Abstract

A single-phase three-level power factor correction circuit of an asymmetric novel T-shaped bridge comprises an uncontrolled rectifier bridge, two groups of bidirectional power tubes and a capacitor C1、C2(ii) a The first rectifying bridge arm of the uncontrolled rectifying bridge and one group of bidirectional power tubes form a first T-shaped bridge, and the second rectifying bridge arm of the uncontrolled rectifying bridge and the other group of bidirectional power tubes form a second T-shaped bridge; the first T-shaped bridge comprises a first group of bridge arms and a group of bidirectional power tubes; the first set of legs includes a diode D1、D2One group of bidirectional power tubes comprises a diode D5、D6、D7、D8Switching tube S1(ii) a The second T-shaped bridge comprises a second group of bridge arms and another group of bidirectional power tubes; the second set of legs includes diodes D3、D4Another group of bidirectional power tubes comprises a diode D9、D10Switching tube S2、S3. The circuit can realize boost output and meet the voltage grade requirement of post-stage equipment. Meanwhile, the device has the advantages of higher direct-current voltage output, smaller harmonic content, lower switching stress, simpler control and the like.

Description

Single-phase three-level power factor correction circuit of novel asymmetric T-shaped bridge
Technical Field
The invention relates to a single-phase three-level rectifier circuit, in particular to a single-phase three-level power factor correction circuit of an asymmetric novel T-shaped bridge.
Background
With the development of economic and industrial control technologies, the application field of high-voltage high-power converters is more and more extensive, and a large amount of rectifying and inverting equipment is put into use. In order to meet the voltage grade requirement of the subsequent equipment and improve the power quality of a power grid, a Boost power factor correction circuit is usually introduced between an uncontrolled rectifying circuit and a filter capacitor. In the traditional two-level power factor correction circuit, the switching off voltage which needs to be borne by a power device is high, the switching loss is also high, and the required passive element is large in size. Such two-level power factor correction circuits are gradually being phased out as the power of the high voltage converter increases.
Disclosure of Invention
Based on this, the invention provides a single-phase three-level power factor correction circuit of an asymmetric novel T-shaped bridge, which can realize an inductive current continuous mode and has a power factor correction function, and the circuit plays a certain role in reducing the electromagnetic interference of a power supply. The circuit can realize boost output and meet the voltage grade requirement of post-stage equipment. Meanwhile, the device has the advantages of higher direct-current voltage output, smaller harmonic content, lower switching stress, simpler control and the like.
The technical scheme adopted by the invention is as follows:
a single-phase three-level power factor correction circuit of an asymmetric novel T-shaped bridge comprises:
uncontrolled rectifier bridge, two groups of bidirectional power tubes and capacitor C1、C2(ii) a The first rectifying bridge arm of the uncontrolled rectifying bridge and one group of bidirectional power tubes form a first T-shaped bridge, and the second rectifying bridge arm of the uncontrolled rectifying bridge and the other group of bidirectional power tubes form a second T-shaped bridge;
the first T-shaped bridge comprises a first group of bridge arms and a group of bidirectional power tubes; the first set of legs includes a diode D1、D2B, carrying out the following steps of; one group of bidirectional power tubes comprises a diode D5、D6、D7、D8Switching tube S1；
The second T-shaped bridge comprises a second group of bridge arms and another group of bidirectional power tubes; the second set of legs includes diodes D3、D4B, carrying out the following steps of; another group of bidirectional power tubes comprises a diode D9、D10Switching tube S2、S3。
The other end of the inductor L1 is connected with a diode D respectively1Anode, diode D5Anode, diode D6Cathode, diode D2A cathode, the connection node of which constitutes an end a;
switch tube S2The source electrodes are respectively connected with a diode D3Anode, diode D7Anode, diode D8Cathode, diode D9Anode, diode D4A cathode, the connection node of which constitutes an end point b;
diode D1The cathodes are respectively connected with a diode D3Cathode and capacitor C1One end, the connection node of which constitutes an endpoint p;
diode D2The anodes are respectively connected with a diode D4Anode and capacitor C2The other end is connected with the node to form an end point m;
capacitor C1The other ends are respectively connected with a diode D10Anode and switch tube S3Source electrode, capacitor C2One end, the connection node of which forms an endpoint n;
switch tube S1The drain electrodes are respectively connected with a diode D5Cathode, diode D7A cathode;
switch tube S1The source electrodes are respectively connected with a diode D6Anode, diode D8An anode;
diode D10Cathode connection switch tube S2Drain electrode, diode D9Cathode connection switch tube S3A drain electrode;
load RLTwo ends are respectively connected with a capacitor C1One terminal, capacitor C2And the other end.
By a diode D5、D6、D7、D8And a switching tube S1The bidirectional power tube is inserted between the terminal a and the terminal b and is an inductor L1The charging forms a loop to realize the direct current side boosting.
The switch tube S1、S2、S3Is an insulated gate bipolar transistor IGBT, or an integrated gate commutated thyristor IGCT, or a power field effect transistor MOSFET.
The invention discloses a single-phase three-level power factor correction circuit of an asymmetric novel T-shaped bridge, which has the following technical effects:
1) compared with the traditional power factor correction circuit, the single-phase three-level power factor correction circuit of the novel asymmetric T-shaped bridge has many advantages, such as that energy can flow in two directions, and power factors can approach to 1 and-1 respectively during rectification and inversion; the sine degree of the current waveform on the network side is very high, the harmonic content is low, and only higher harmonics related to the switching frequency exist; the device can show excellent dynamic response characteristic in the situation that the load changes frequently; the output voltage of the direct current side is stable, and the ripple waves are small;
2) the single-phase three-level power factor correction circuit of the novel asymmetric T-shaped bridge only needs one power inductor, reduces electromagnetic interference sources, reduces the whole size of a rectifier, and can achieve the purposes of high power factor, cost reduction and high working efficiency;
3) the single-phase three-level power factor correction circuit of the novel asymmetric T-shaped bridge expands the design thought of a bridgeless into a three-level Boost type rectifier, three levels are realized by adopting different combination modes of the switching tubes, and even if the bidirectional tube is in a fault state, the circuit can still realize the power output to the direct current side.
Drawings
Fig. 1 is a main topology structure diagram of a single-phase three-level power factor correction circuit of an asymmetric novel T-type bridge of the invention.
Fig. 2 is a schematic diagram of a single-phase three-level power factor correction circuit of an asymmetric novel T-bridge according to the working mode of the present invention.
Fig. 3 is a schematic diagram of a second working mode of the single-phase three-level power factor correction circuit of the asymmetric novel T-bridge of the present invention.
Fig. 4 is a three schematic diagrams of the working modes of the single-phase three-level power factor correction circuit of the asymmetric novel T-bridge of the present invention.
Fig. 5 is a four schematic diagram of the working mode of the single-phase three-level power factor correction circuit of the asymmetric novel T-bridge of the present invention.
Fig. 6 is a five schematic diagram of the working mode of the single-phase three-level power factor correction circuit of the asymmetric novel T-bridge of the present invention.
Fig. 7 is a six schematic diagram of the working mode of the single-phase three-level power factor correction circuit of the asymmetric novel T-bridge of the present invention.
FIG. 8 shows an AC power supply voltage U of the single-phase three-level power factor correction circuit of the asymmetric novel T-bridge of the present inventionSAnd alternating supply current iSAnd (4) waveform diagrams.
FIG. 9 shows a voltage U between two bridge arms of an uncontrolled rectifier bridge of a single-phase three-level power factor correction circuit of an asymmetric novel T-shaped bridge according to the present inventionabAnd (4) waveform diagrams.
FIG. 10 shows a DC side voltage U of the novel asymmetric T-bridge single-phase three-level power factor correction circuitdcAnd (4) waveform diagrams.
FIG. 11 shows two capacitors C on the DC side of a novel asymmetric T-bridge single-phase three-level power factor correction circuit according to the present invention1、C2Voltage U onc1、Uc2And (4) waveform diagrams.
Detailed Description
As shown in figure 1, the single-phase three-level power factor correction circuit of the asymmetric novel T-shaped bridge comprises an uncontrolled rectifier bridge, two groups of bidirectional power tubes and a capacitor C1、C2。
Wherein, the first rectifier bridge arm of the uncontrolled rectifier bridge and a group of bidirectional power tubes form a T-shaped bridge, and the second rectifier bridge arm of the uncontrolled rectifier bridge and another group of two rectifier bridge armsAnd forming a T-shaped bridge to the power tube. The first T-shaped bridge consists of a first group of bridge arms of an uncontrolled rectifier bridge and a group of bidirectional power tubes, and the first group of bridge arms of the uncontrolled rectifier bridge comprises a diode D1、D2A set of bidirectional power transistors connected with the power transistor comprises a diode D5、D6、D7、D8And a power switch tube S1. The second T-shaped bridge consists of a second group of bridge arms of the uncontrolled rectifier bridge and another group of bidirectional power tubes, and the first group of bridge arms of the uncontrolled rectifier bridge comprises a diode D3、D4A set of bidirectional power transistors connected with the power transistor comprises a diode D9、D10Power switch tube S2、S3. Diode D1、D5Anode of (2), diode D2、D6Is connected with the inductor L1, and the connection point is regarded as the terminal a; diode D3、D7、D9Anode of (2), diode D4、D8The cathode of the power switch tube S2 is connected with the source electrode of the power switch tube S2, and the connection point is regarded as an end point b; diode D1、D3Is connected with the anode of the capacitor C1, and the connection point is regarded as a terminal point p; diode D10Anode of (2), power switch tube S3Source electrode of (1), capacitor C1Negative electrode of (2) and capacitor C2Is connected, and the connection point is regarded as an endpoint n; diode D2、D4Anode and capacitor C2The positive electrodes of the two electrodes are connected, and the connection point is taken as an end point m; diode D5Cathode of (2), diode D7Cathode and power switch tube S1Is connected to the drain of the diode D6Anode of (2), diode D8Anode and power switch tube S1Is connected to the source of a diode D10Cathode and power switch tube S2Is connected to the drain of the diode D9Cathode and power switch tube S3Is connected to a load RLConnected between the end points p, m.
USIs an AC supply voltage iSFor alternating supply current, UabFor not controlling the voltage between the two arms of the rectifier bridge, UdcIs a DC side voltage, Uc1And Uc2Respectively a DC side capacitor C1、C2Voltage on, capacitance C1、C2Not only stabilizes the DC side voltage, but also stores the electric energy and sends the electric energy to the load RLProviding energy.
The specific parameters of the circuit are as follows: the effective value of the AC power supply voltage is 220V, the frequency is 50Hz, and the DC side output voltage Udc400V, inductance L13.8mH, capacitance C1＝C24700 μ F, switching frequency fs 20kHz, load RL＝80Ω。
A single-phase three-level power factor correction circuit of an asymmetric novel T-shaped bridge divides the whole power frequency working period into six working modes according to a carrier wave laminated Pulse Width Modulation (PWM):
the first working mode is as follows: as shown in fig. 2, the diode D operates in the positive half cycle of the AC power source AC1、D4Conducting power switch tube S1、S2、S3And (5) disconnecting. The current starts from the AC power supply AC and passes through the inductor L1Diode D1 and capacitor C1、C2Diode D4And finally back to the AC power source AC. Under the working mode, the voltage U between two bridge arms of the uncontrolled rectifier bridgeabEqual to the DC side voltage UdcCapacitor C1、C2Charging, AC power supply AC and inductance L1Together to a load RLSupplying power, and linearly reducing the inductive current;
the second working mode is as follows: as shown in fig. 3, the diode D operates in the positive half cycle of the AC power source AC1、D10Conducting power switch tube S2Conducting power switch tube S1、S3And (5) disconnecting. The current starts from the AC power supply AC and passes through the inductor L1Diode D1Capacitor C1Diode D10Power switch tube S2And finally back to the AC power source AC. Under the working mode, the voltage U between two bridge arms of the uncontrolled rectifier bridgeabEqual to the DC side voltage UdcHalf of (1), capacitance C1Charging, capacitance C2Discharging if the AC supply voltage Us is higher than UdcAt/2, in this state, electricity is suppliedFeeling L1The current rises linearly if the AC supply voltage Us is less than UdcAt/2, in this state, the inductance L1The current decreases linearly;
the working mode is three: as shown in fig. 4, the diode D operates in the positive half cycle of the AC power source AC5、D8Conducting power switch tube S1Conducting power switch tube S2、S3And (5) disconnecting. The current starts from the AC power supply AC and passes through the inductor L1Diode D5Power switch tube S1Diode D8And finally back to the AC power source AC. Under the working mode, the voltage U between two bridge arms of the uncontrolled rectifier bridgeabEqual to zero, capacitance C1、C2Discharging to a load RLCharging, AC power supply gives inductance L1Charging;
working mode four: as shown in fig. 5, the diode D operates in the negative half cycle of the AC power source AC2、D3Conducting power switch tube S1、S2、S3Is disconnected and current flows from the AC power supply AC through the diode D3Capacitor C1、C2Diode D3Inductor L1And finally back to the AC power source AC. Under the working mode, the voltage U between two bridge arms of the uncontrolled rectifier bridgeabEqual to negative DC side voltage UdcCapacitor C1、C2Charging, AC power supply AC and inductance L1Together to a load RLSupplying power, and linearly reducing the inductive current;
working mode five: as shown in fig. 6, the diode D operates in the negative half cycle of the AC power source AC2、D9Conducting, switching tube S3Conducting, switching tube S1、S2Is disconnected and current flows from the AC power supply AC through the diode D9Power switch tube S3Capacitor C2Diode D2Inductor L1And finally back to the AC power source AC. Under the working mode, the voltage U between two bridge arms of the uncontrolled rectifier bridgeabEqual to negative DC side voltage UdcHalf of (1), capacitance C1Discharge, electricityContainer C2Charging, if the AC supply voltage Us is higher than UdcAt/2, in this state, the inductance L1The current rises linearly; if the AC supply voltage Us is less than UdcAt/2, in this state, the inductance L1The current decreases linearly;
the working mode is six: as shown in fig. 7, the diode D operates in the negative half cycle of the AC power source AC6、D7Conducting, switching tube S1Conducting, switching tube S2、S3Is disconnected and current flows from the AC power supply AC through the diode D9Power switch tube S3Capacitor C2Diode D2Inductor L1And finally back to the AC power source AC. Under the working mode, the voltage U between two bridge arms of the uncontrolled rectifier bridgeabEqual to zero, capacitance C1、C2Discharging to a load RLCharging, AC power supply gives inductance L1And (6) charging.
FIG. 8 shows an AC power supply voltage U of the single-phase three-level power factor correction circuit of the asymmetric novel T-bridge of the present inventionSAnd alternating supply current iSThe waveform diagram, the network side voltage and the current have the same frequency and the same phase, namely the unit power factor is realized, and the feasibility of the topology is proved.
FIG. 9 shows a voltage U between two bridge arms of an uncontrolled rectifier bridge of a single-phase three-level power factor correction circuit of an asymmetric novel T-shaped bridge according to the present inventionabThe oscillogram accords with the working characteristics of the three-level circuit and is consistent with theoretical analysis.
FIG. 10 shows a DC side voltage U of the novel asymmetric T-bridge single-phase three-level power factor correction circuitdcThe waveform diagram shows that the voltage on the direct current side is stabilized to be about 400V, and the feasibility of the topology is proved.
FIG. 11 shows two capacitors C on the DC side of a novel asymmetric T-bridge single-phase three-level power factor correction circuit according to the present invention1、C2Voltage U onc1、Uc2The wave form diagram and the voltage wave forms of the two capacitors are dynamically balanced, and the topology is proved to effectively realize midpoint potential balance.

Claims (4)

1. A single-phase three-level power factor correction circuit of an asymmetric novel T-shaped bridge is characterized by comprising:
uncontrolled rectifier bridge, two groups of bidirectional power tubes and capacitor C1、C2(ii) a The first rectifying bridge arm of the uncontrolled rectifying bridge and one group of bidirectional power tubes form a first T-shaped bridge, and the second rectifying bridge arm of the uncontrolled rectifying bridge and the other group of bidirectional power tubes form a second T-shaped bridge;
the first T-shaped bridge comprises a first group of bridge arms and a group of bidirectional power tubes; the first set of legs includes a diode D1、D2B, carrying out the following steps of; one group of bidirectional power tubes comprises a diode D5、D6、D7、D8Switching tube S1；
The second T-shaped bridge comprises a second group of bridge arms and another group of bidirectional power tubes; the second set of legs includes diodes D3、D4B, carrying out the following steps of; another group of bidirectional power tubes comprises a diode D9、D10Switching tube S2、S3；
The other end of the inductor L1 is connected with a diode D respectively1Anode, diode D5Anode, diode D6Cathode, diode D2A cathode, the connection node of which constitutes an end a;
switch tube S2The source electrodes are respectively connected with a diode D3Anode, diode D7Anode, diode D8Cathode, diode D9Anode, diode D4A cathode, the connection node of which constitutes an end point b;
diode D1The cathodes are respectively connected with a diode D3Cathode and capacitor C1One end, the connection node of which constitutes an endpoint p;
diode D2The anodes are respectively connected with a diode D4Anode and capacitor C2The other end is connected with the node to form an end point m;
capacitor C1The other ends are respectively connected with a diode D10Anode and switch tube S3Source electrode, capacitor C2One end, the connection node of which forms an endpoint n;
switch with a switch bodyPipe S1The drain electrodes are respectively connected with a diode D5Cathode, diode D7A cathode;
switch tube S1The source electrodes are respectively connected with a diode D6Anode, diode D8An anode;
diode D10Cathode connection switch tube S2Drain electrode, diode D9Cathode connection switch tube S3A drain electrode;
load RLTwo ends are respectively connected with a capacitor C1One terminal, capacitor C2And the other end.
2. The single-phase three-level power factor correction circuit of the asymmetric novel T-shaped bridge as claimed in claim 1, characterized in that: by a diode D5、D6、D7、D8And a switching tube S1The bidirectional power tube is inserted between the terminal a and the terminal b and is an inductor L1The charging forms a loop to realize the direct current side boosting.
3. The single-phase three-level power factor correction circuit of the asymmetric novel T-shaped bridge as claimed in claim 1, characterized in that: the switch tube S1、S2、S3Is an insulated gate bipolar transistor IGBT, or an integrated gate commutated thyristor IGCT, or a power field effect transistor MOSFET.
4. The single-phase three-level power factor correction circuit of any one of the asymmetric novel T-bridge of claims 1-3, characterized in that: the whole power frequency working period is divided into six working modes:
the first working mode is as follows: diode D operating in the positive half-cycle of the AC supply1、D4Conducting power switch tube S1、S2、S3Disconnecting; the current starts from the AC power supply AC and passes through the inductor L1Diode D1 and capacitor C1、C2Diode D4And finally back to the alternating current power supply AC; under the working mode, the voltage between two bridge arms of the uncontrolled rectifier bridgeUabEqual to the DC side voltage UdcCapacitor C1、C2Charging, AC power supply AC and inductance L1Together to a load RLSupplying power, and linearly reducing the inductive current;
the second working mode is as follows: diode D operating in the positive half-cycle of the AC supply1、D10Conducting power switch tube S2Conducting power switch tube S1、S3Disconnecting; the current starts from the AC power supply AC and passes through the inductor L1Diode D1Capacitor C1Diode D10Power switch tube S2And finally back to the alternating current power supply AC; under the working mode, the voltage U between two bridge arms of the uncontrolled rectifier bridgeabEqual to the DC side voltage UdcHalf of (1), capacitance C1Charging, capacitance C2Discharging if the AC supply voltage Us is higher than UdcAt/2, in this state, the inductance L1The current rises linearly if the AC supply voltage Us is less than UdcAt/2, in this state, the inductance L1The current decreases linearly;
the working mode is three: diode D operating in the positive half-cycle of the AC supply5、D8Conducting power switch tube S1Conducting power switch tube S2、S3Disconnecting; the current starts from the AC power supply AC and passes through the inductor L1Diode D5Power switch tube S1Diode D8And finally back to the alternating current power supply AC; under the working mode, the voltage U between two bridge arms of the uncontrolled rectifier bridgeabEqual to zero, capacitance C1、C2Discharging to a load RLCharging, AC power supply gives inductance L1Charging;
working mode four: diode D operating in the negative half-cycle of the AC supply2、D3Conducting power switch tube S1、S2、S3Is disconnected and current flows from the AC power supply AC through the diode D3Capacitor C1、C2Diode D3Inductor L1And finally back to the alternating current power supply AC; in this mode of operationUnder the condition of no control, the voltage U between two bridge arms of rectifier bridgeabEqual to negative DC side voltage UdcCapacitor C1、C2Charging, AC power supply AC and inductance L1Together to a load RLSupplying power, and linearly reducing the inductive current;
working mode five: diode D operating in the negative half-cycle of the AC supply2、D9Conducting, switching tube S3Conducting, switching tube S1、S2Is disconnected and current flows from the AC power supply AC through the diode D9Power switch tube S3Capacitor C2Diode D2Inductor L1And finally back to the alternating current power supply AC; under the working mode, the voltage U between two bridge arms of the uncontrolled rectifier bridgeabEqual to negative DC side voltage UdcHalf of (1), capacitance C1Discharge, capacitance C2Charging, if the AC supply voltage Us is higher than UdcAt/2, in this state, the inductance L1The current rises linearly; if the AC supply voltage Us is less than UdcAt/2, in this state, the inductance L1The current decreases linearly;
the working mode is six: diode D operating in the negative half-cycle of the AC supply6、D7Conducting, switching tube S1Conducting, switching tube S2、S3Is disconnected and current flows from the AC power supply AC through the diode D9Power switch tube S3Capacitor C2Diode D2Inductor L1And finally back to the alternating current power supply AC; under the working mode, the voltage U between two bridge arms of the uncontrolled rectifier bridgeabEqual to zero, capacitance C1、C2Discharging to a load RLCharging, AC power supply gives inductance L1And (6) charging.
CN202110121174.3A 2021-01-28 2021-01-28 Single-phase three-level power factor correction circuit of novel asymmetric T-shaped bridge Pending CN112865508A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110121174.3A CN112865508A (en) 2021-01-28 2021-01-28 Single-phase three-level power factor correction circuit of novel asymmetric T-shaped bridge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110121174.3A CN112865508A (en) 2021-01-28 2021-01-28 Single-phase three-level power factor correction circuit of novel asymmetric T-shaped bridge

Publications (1)

Publication Number Publication Date
CN112865508A true CN112865508A (en) 2021-05-28

Family

ID=75986732

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110121174.3A Pending CN112865508A (en) 2021-01-28 2021-01-28 Single-phase three-level power factor correction circuit of novel asymmetric T-shaped bridge

Country Status (1)

Country Link
CN (1) CN112865508A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113437885A (en) * 2021-06-28 2021-09-24 三峡大学 Three-level rectifier based on diode clamping bidirectional switch

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202076379U (en) * 2010-07-30 2011-12-14 比亚迪股份有限公司 Heating circuit of battery
CN105024570A (en) * 2014-04-29 2015-11-04 艾默生网络能源有限公司 Single-phase inverter circuit
CN107222115A (en) * 2017-06-02 2017-09-29 杭州中恒电气股份有限公司 A kind of Three phase power factor correcting converter
CN111030441A (en) * 2019-12-13 2020-04-17 三峡大学 Single-phase power factor correction circuit based on three-tube five-level topology
CN112019076A (en) * 2020-10-13 2020-12-01 深圳格瑞特新能源有限公司 High-gain single-phase inverter, control method and three-phase inverter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202076379U (en) * 2010-07-30 2011-12-14 比亚迪股份有限公司 Heating circuit of battery
CN105024570A (en) * 2014-04-29 2015-11-04 艾默生网络能源有限公司 Single-phase inverter circuit
CN107222115A (en) * 2017-06-02 2017-09-29 杭州中恒电气股份有限公司 A kind of Three phase power factor correcting converter
CN111030441A (en) * 2019-12-13 2020-04-17 三峡大学 Single-phase power factor correction circuit based on three-tube five-level topology
CN112019076A (en) * 2020-10-13 2020-12-01 深圳格瑞特新能源有限公司 High-gain single-phase inverter, control method and three-phase inverter

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
LONG HUANG ET AL: "Flexible Mode Bridgeless Boost PFC Rectifier With High Efficiency Over a Wide Range of Input Voltage", 《IEEE TRANSACTIONS ON POWER ELECTRONICS》 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113437885A (en) * 2021-06-28 2021-09-24 三峡大学 Three-level rectifier based on diode clamping bidirectional switch

Similar Documents

Publication Publication Date Title
CN111416534B (en) Current path reconstruction type single-phase five-level rectifier
CN112910244B (en) Single-phase three-level power factor correction circuit of hybrid bridge arm
CN112865569A (en) Single-phase three-level rectifier of mixed T-shaped bridge
CN112865587B (en) Single-phase three-level rectifier of double-barrelled T type bridge
CN111082680B (en) Single-phase five-level rectifier based on T-shaped structure
CN111416535A (en) Three-mode mixed single-phase five-level rectifier
CN110086360A (en) A kind of five level high efficiency rectifiers
CN112865560A (en) Multi-diode series back-to-back bridgeless three-level rectifier
CN112865565A (en) Double-switch three-level rectifier of symmetrical T-shaped bridge
CN112865508A (en) Single-phase three-level power factor correction circuit of novel asymmetric T-shaped bridge
CN113437884B (en) Three-level rectifier based on parallel diode clamp bidirectional switch
CN113437882B (en) Three-level rectifier based on parallel multi-diode serial bidirectional switch
CN102769394A (en) Single-phase controllable rectification circuit
CN112865562B (en) Single-phase three-switch tube pseudo-totem-pole type three-level rectifier
CN113193768B (en) Four-switch-tube series-type back-to-back three-level rectifier
CN112865561B (en) Diode clamping type back-to-back bridgeless three-level rectifier
CN112865563B (en) Three-port clamping type back-to-back bridgeless three-level rectifier
CN112701905A (en) Single-phase three-level power factor correction circuit based on pseudo totem-pole structure
CN112865566B (en) Single-phase three-level rectifier with three switching tubes
CN204835962U (en) Voltage doubler rectifier circuit
CN112910243B (en) Single-phase three-level pseudo-totem-pole power factor correction circuit
CN113206605B (en) Three-level rectifying charger with single-phase T-shaped staggered parallel structure
CN213461552U (en) AC-AC hybrid boost switch capacitor converter
CN112187071B (en) DC side capacitor cascade single-phase seven-level rectifier
CN113206601B (en) Direct current charger based on single-phase II type three-level pseudo totem pole

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20210528

RJ01 Rejection of invention patent application after publication