CN110880864B - Single-phase five-level power factor correction circuit based on hybrid H bridge - Google Patents

Single-phase five-level power factor correction circuit based on hybrid H bridge Download PDF

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CN110880864B
CN110880864B CN201911283837.0A CN201911283837A CN110880864B CN 110880864 B CN110880864 B CN 110880864B CN 201911283837 A CN201911283837 A CN 201911283837A CN 110880864 B CN110880864 B CN 110880864B
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diode
capacitor
inductor
switch tube
hybrid
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CN110880864A (en
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马辉
鲁海鹏
郑凯通
韩笑
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China Three Gorges University CTGU
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
    • H02M1/4208—Arrangements for improving power factor of AC input
    • H02M1/4225—Arrangements for improving power factor of AC input using a non-isolated boost converter
    • 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
    • H02M1/32—Means for protecting converters other than automatic disconnection
    • 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
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/21—Conversion of ac power input into dc power output without 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
    • H02M7/217—Conversion of ac power input into dc power output without 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
    • H02M7/219—Conversion of ac power input into dc power output without 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 in a bridge configuration
    • 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
    • H02M1/32—Means for protecting converters other than automatic disconnection
    • H02M1/325—Means for protecting converters other than automatic disconnection with means for allowing continuous operation despite a fault, i.e. fault tolerant converters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

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Abstract

A single-phase five-level power factor correction circuit based on a hybrid H bridge comprises a switching tube Q1、Q2、Q3The diodes D are respectively connected to one side of the AC power source Vs1Anode, diode D2A cathode, the connection node constituting a terminal b; the other side of the AC power supply Vs is connected with one end of an inductor L, and the other end of the inductor L is respectively connected with a diode D3Anode, diode D4The cathode is connected with the node to form an endpoint a; switch tube Q3The drain electrodes are respectively connected with a diode D1Cathode, diode D3Cathode, diode D7Anode and switch tube Q1The drain electrode is connected with the node to form an end point c; switch tube Q3The source electrodes are respectively connected with a diode D2Anode, diode D4Anode, diode D8Cathode and switch tube Q2The source electrode is connected with the node to form an end point d; switch tube Q2Drain electrode connected with switch tube Q1A source connected to the node to form a terminal n; diode D7Cathode connection capacitor C1One end, the connection node of which constitutes an endpoint p; capacitor C2Cathode connection diode D8And the anode is connected with the node to form the endpoint m. The invention has the advantages of low cost, high reliability, simple control system design and the like.

Description

Single-phase five-level power factor correction circuit based on hybrid H bridge
Technical Field
The invention relates to a power factor correction circuit, in particular to a single-phase five-level power factor correction circuit based on a hybrid H bridge.
Background
With the development of power electronic technology, research and application of multi-level power factor correction circuits are receiving wide attention, wherein a five-level high power factor boost converter is one of the most popular research aspects at present. The five-level high-power factor correction circuit needs to meet the requirements of unit power factor, low harmonic content, stable voltage at a direct current side and the like; the traditional five-level power factor correction circuit mainly adopts a diode clamping circuit and a flying capacitor clamping circuit to realize five-level output, and has a complex structure and higher design difficulty of a control system; meanwhile, the five-level power factor circuit based on the diode clamping type and the flying capacitor type is poor in reliability and performance.
Disclosure of Invention
The invention mainly aims to overcome the defects that the existing five-level topological structure is mostly a symmetrical H-bridge structure, and the structure has more controllable devices, large design difficulty of a control system, insufficient reliability and the like. The single-phase five-level power factor correction circuit based on the hybrid H bridge has the advantages of low cost, high reliability, simple control system design and the like. Therefore, the circuit volume is reduced to a certain extent, the switching loss is reduced, and the power density is improved.
The technical scheme adopted by the invention is as follows:
a single-phase five-level power factor correction circuit based on a hybrid H bridge comprises an inductor L and a switching tube Q1、Q2、Q3Diode D1～D9Capacitor C1、C2；
One side of the AC power supply Vs is respectively connected with a diode D1Anode, diode D2A cathode, the connection node constituting a terminal b;
the other side of the AC power supply Vs is connected with one end of an inductor L, and the other end of the inductor L is respectively connected with a diode D3Anode, diode D4A cathode; the other end of the inductor L and the diode D3、D4The connection nodes of (a) form an endpoint a;
switch tube Q3The drain electrodes are respectively connected with a diode D1Cathode, diode D3Cathode, diode D7Anode and cathodeClosing tube Q1A drain electrode; switch tube Q3Drain and diode D1、D3、D7And a switching tube Q1The connection node of the drain forms an end point c;
switch tube Q3The source electrodes are respectively connected with a diode D2Anode, diode D4Anode, diode D8Cathode and switch tube Q2A source electrode; switch tube Q3Source and diode D2、D4、D8And a switching tube Q2The connection node of the source electrode forms an end point d;
switch tube Q2Drain electrode connected with switch tube Q1A source connected to the node to form a terminal n;
diode D7Cathode connection capacitor C1One end, the connection node of which constitutes an endpoint p;
capacitor C1The other end is connected with a capacitor C2One end, the connecting point is connected with the endpoint n;
capacitor C2Cathode connection diode D8An anode, the connection node of which forms an endpoint m;
switch tube Q1Anti-parallel diode D5Switching tube Q2Anti-parallel diode D6Switching tube Q3Anti-parallel diode D9；
The end point p and the end point m are respectively connected with a load RLTwo ends.
The end point a, the end point c, the end point d and the end point n form four ports of a hybrid H-bridge network structure, and bridge arms on two sides of the hybrid H-bridge are divided into diodes and full-control devices.
The switch tube Q1、Q2、Q3Is an insulated gate bipolar transistor IGBT, an integrated gate commutated thyristor IGCT, or a power field effect transistor MOSFET.
The capacitor C1、C2The split capacitors are connected in series with a direct current bus.
The invention discloses a single-phase five-level power factor correction circuit based on a hybrid H bridge, which has the following technical effects:
1: single-phase five-level power based on hybrid H bridgeFactor correction circuit, structural innovation point: the five-level topology fusion diode and the full-control device are used for inventing a high-reliability hybrid H-bridge four-end network structure, the selection of a power path is realized by using a full-control switching tube, and a diode D is used7、D8The unidirectional power circulation of the direct current bus is realized. The topology of the invention has the characteristics of Boost, rectification and five-level power factor correction.
2: the invention provides a single-phase five-level power factor correction circuit based on a hybrid H bridge.
3: a mixed H-bridge five-level topology is merged into a unit power factor correction circuit topology structure; a boosting process is introduced into a topological structure of the rectifier, and a fusion technology of a full-control device and an uncontrolled device is applied, so that the structure of the rectifier is modularized, and the practical and cascade connection of a module circuit is facilitated; in addition, the single-phase five-level power factor correction circuit based on the hybrid H bridge is applied to the diode of the switch tube body as a conduction loop for many times, normal power supply to a load can be realized under the condition that the conduction pulse of the switch tube is lost, the fault loss is reduced to a certain degree, and the working reliability of the single-phase five-level power factor correction circuit is improved.
4: the hybrid H-bridge structure in the circuit has high reliability and few driving circuits, and has the characteristics of boosting, rectifying and five-level power factor correction, in addition, diode devices are adopted in the topology of the invention to realize five levels without control, the control system design of the circuit is simple and easy to implement, and the hybrid H-bridge structure is suitable for being applied to medium and small power occasions.
5: the hybrid H-bridge structure provided by the invention has the advantages of few driving circuits, high reliability and the like; in addition, the five levels are completed by adopting more diode devices without mutual matching of the diode devices, and the control system design of the circuit is simple and easy to implement, so that the topology disclosed by the invention is suitable for being applied to medium and small power occasions. The topology has the characteristics of boosting, rectifying and five-level power factor correction.
6: in order to ensure that the topology of the invention is widely applied to industry, the topology structure of the invention adopts a double-loop PI control mode, adopts voltage as outer loop control quantity and current as inner loop control, and the inner loop current control mainly aims at realizing the sine of the current and ensuring that the current waveform has larger distortion.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
fig. 1 shows a first circuit topology according to the present invention.
Fig. 2 is a flow chart of the switching mode of the present invention.
Fig. 3 is a switch mode flow diagram of the present invention.
Fig. 4 is a switch mode three-flow diagram of the present invention.
Fig. 5 is a switch mode four-flow diagram of the present invention.
Fig. 6 is a five-flow diagram of the switching mode of the present invention.
Fig. 7 is a switch mode six-flow diagram of the present invention.
FIG. 8 is a block diagram of a control strategy of the present invention.
FIG. 9 shows the input voltage V of the topological rectifier of the present inventionabA voltage waveform diagram.
FIG. 10 is a waveform diagram of the input voltage and current of the topology of the present invention.
FIG. 11 is a waveform diagram of the voltage and current at the DC side of the topology output of the present invention.
Detailed Description
As shown in FIG. 1, the single-phase five-level power factor correction circuit based on the hybrid H-bridge comprises an inductor L and a switching tube Q1、Q2、Q3Diode D1～D9Capacitor C1、C2；
One side of the AC power supply Vs is respectively connected with a diode D1Anode, diode D2A cathode, the connection node constituting a terminal b;
the other side of the AC power supply Vs is connected with one end of an inductor L, and the other end of the inductor L is respectively connected with a diode D3Anode, diode D4A cathode; the other end of the inductor L and the diode D3、D4The connection nodes of (a) form an endpoint a;
switch tube Q3The drain electrodes are respectively connected with a diode D1Cathode, diode D3Cathode, diode D7Anode and switch tube Q1A drain electrode; switch tube Q3Drain and diode D1、D3、D7And a switching tube Q1The connection node of the drain forms an end point c;
switch tube Q3The source electrodes are respectively connected with a diode D2Anode, diode D4Anode, diode D8Cathode and switch tube Q2A source electrode; switch tube Q3Source and diode D2、D4、D8And a switching tube Q2The connection node of the source electrode forms an end point d;
switch tube Q2Drain electrode connected with switch tube Q1A source connected to the node to form a terminal n;
diode D7Cathode connection capacitor C1One end, the connection node of which constitutes an endpoint p;
capacitor C1The other end is connected with a capacitor C2One end, the connecting point is connected with the endpoint n;
capacitor C2Cathode connection diode D8An anode, the connection node of which forms an endpoint m;
switch tube Q1Anti-parallel diode D5Switching tube Q2Anti-parallel diode D6Switching tube Q3Anti-parallel diode D9；
The end point p and the end point m are respectively connected with a load RLTwo ends.
The end point a, the end point c, the end point d and the end point n form four ports of a hybrid H-bridge network structure, and bridge arms on two sides of the hybrid H-bridge are divided into diodes and full-control devices. The novel topology is a hybrid H-bridge four-port network structure which can be used as a five-level modular power unit module.
The switch tube Q1、Q2、Q3Is an insulated gate bipolar transistor IGBT, an integrated gate commutated thyristor IGCT, orAn electric field effect transistor MOSFET.
The capacitor C1、C2The split capacitor is formed by connecting two capacitors with the same capacitance in series, and the capacitors with the same capacitance in series are divided by the capacitors in series, wherein the series voltage of the capacitors with the same capacitance in series is half of the series voltage, so that the direct-current side voltage is divided to form a middle point of half of the bus voltage, and the aim of the method is to finish the purpose of completing the division of the direct-current bus split capacitor
Figure GDA0002884529360000041
The rise of the level.
As shown in fig. 1, current ilFor the inductor to output a current, idcFor the load current output value, VdcIs a load RLThe output voltage values at the two ends are topologically and repeatedly used for a switching tube MOSFET anti-parallel diode as a conduction loop of the circuit, so that the design cost is saved to a certain extent.
The single-phase five-level power factor correction circuit based on the hybrid H bridge comprises the following switching modes:
a first switching mode: as shown in FIG. 2, the switching tube Q is the positive half cycle of the AC power source Vs3Conducting, current passing through inductor L and switching tube Q3Finally via a diode D2、D3Flowing back, in the process, the inductor L stores energy and the load RLBy a capacitor C1、C2Supplying power;
and a second switching mode: as shown in FIG. 3, the switching tube Q is the positive half cycle of the AC power source Vs1Conducting current through inductor L and diode D3、D8、D2And a capacitor C2In the process, the AC power supply Vs and the inductor L simultaneously couple the capacitor C2Charging, load RLBy a capacitor C1The power supply is realized, and the conversion process of the first switch mode and the second switch mode is a Boost process;
and (3) switching mode III: as shown in FIG. 4, in this case, the positive half cycle of the AC power source Vs, the current passes through the inductor L and the diode D3、D7、D8、D2And a capacitor C1、C2In the process, cross-linkingCurrent source Vs and inductor L simultaneously supply load RLAnd a capacitor C1、C2Supply, capacitor C1、C2Charging;
and a fourth switching mode: as shown in FIG. 5, the switching tube Q is the negative half cycle of the AC power source Vs3On and current flows through the diode D1、D4Switching tube Q3Finally, the voltage returns to the alternating current power supply Vs through the inductor L, in the process, the inductor L stores energy, and the load RLBy a capacitor C1、C2Supplying power;
a switching mode five: as shown in FIG. 6, the switching tube Q is the negative half cycle of the AC power source Vs2On and current flows through the diode D1、D8、D4、D7And a split capacitor C1Finally, the current flows through the inductor L and returns to the AC power source Vs, and in the process, the AC power source Vs and the inductor L simultaneously supply the capacitor C1Charging, wherein the conversion process from the switching mode four to the switching mode five is a Boost process;
a switching mode six: as shown in FIG. 7, in this case the negative half cycle of the AC source Vs, current flows through the diode D1、D4、D7、D8And a capacitor C1、C2Returns to the AC power supply Vs through the inductor L, and in the process, the AC power supply Vs and the inductor L simultaneously supply the load RLAnd a capacitor C1、C2Supply, capacitor C1、C2And (6) charging.
FIG. 8 is a block diagram of a control strategy adopted by a topological structure of the present invention, and the double closed loop PI control method of the topological structure of the present invention realizes closed loop system control, wherein voltage is used as outer loop control of a control loop, current is used as an inner loop control mode, and the main reason for adopting current inner loop control is to realize the sine of a current waveform, and simultaneously, the output of the current inner loop obtains a reference voltage vector through an equivalent circuit input and output function expression, so that the reference voltage vector is used as a control parameter of a pulse width modulation wave, and through sampling a grid voltage, another reference quantity of the control input voltage is realized as modulation wave input by adopting a phase-locked loop (PLL).
Experimental parameters:
the peak value of the alternating current power supply is 220V, and the output direct current voltage Vdc250V, 40 omega of resistance load, 2mH of filter inductance and a split capacitor C1＝C21000 muf, switching frequency 100 kHz. The topological structure control mode is realized by adopting a mode shown in fig. 8, and can be obtained by a topological structure steady-state loop voltage equation:
Figure GDA0002884529360000051
where L is a linear inductance L2 mH, r is an inductance equivalent resistance r 0.3 Ω, λ and γ are switching function numbers 0< γ, λ <1, and the formula (1) is obtained by a pull-type transformation:
Figure GDA0002884529360000061
the current equation of the steady-state loop can be obtained by the method:
il＝ic+idc (3)
Figure GDA0002884529360000062
wherein
Figure GDA0002884529360000063
k is a switching scaling factor of 0<k<1。
The formula (4) can be transformed in a pull mode:
Figure GDA0002884529360000064
the voltage outer ring mainly acts on stabilizing the output voltage of the direct current bus, providing a reference current value for the inner ring, realizing voltage stabilization by the voltage outer ring through PI control, and realizing a transfer function of the voltage outer ring:
Figure GDA0002884529360000065
wherein k ispvIs the voltage loop PI proportionality coefficient, and kpv＝10，kivIs the voltage loop PI integral coefficient, and kiv＝0.01。
The application of the current inner loop mainly aims at making the input current sinusoidal, obtaining an inner loop reference current value by multiplying the voltage outer loop output value and the phase-locked loop output, and obtaining a current loop PI transfer function:
Figure GDA0002884529360000066
wherein k ispcIs the current loop PI proportionality coefficient, and kpc＝10，kicIs the current loop PI integral coefficient, and kic＝0.1。
As can be seen from the control diagram, the current loop transfer function:
Figure GDA0002884529360000067
the control system closed loop transfer function:
Figure GDA0002884529360000068
fig. 9 to 11 are experimental waveforms of the present invention at a medium load of 40 ohms.
FIG. 9 is a graph of the voltage waveforms in the series branch of the AC power supply and the inductor, where V is clearly visible in FIG. 9abThe voltage is balanced in five points, and the correctness of the topology of the invention is verified, namely the invention can realize the single-phase three-tube five-level power factor correction.
Fig. 10 is a voltage and current waveform diagram of an input side of an alternating current power supply, and it can be seen that voltage and current are in the same phase, and the waveform verifies that the topological structure of the invention can realize the function of single-phase power factor correction.
Fig. 11 is a waveform diagram of the output voltage and current of the topology rectifier, and it can be seen from fig. 11 that the voltage and current changes in the waveform diagram are consistent, so as to realize the function of stabilizing the voltage.
Using diodes D7、D8The following circuit protection is performed:
one, two diodes D are adopted7、D8Ensuring one-way circulation of power and ensuring the capacitance C1、C2Will only flow to the load RLFlow without flowing backward;
secondly, when the circuit is in fault, the circuit can well protect;
thirdly, in the mode switching process, the diode is used as a boosting voltage clamping diode;
fourthly, when the switch mode is I or IV, the voltage of the inductor L in the energy storage process is lower than that of the capacitor C1、C2When the voltage is applied, the voltage clamping function is realized.

Claims (7)

1. A single-phase five-level power factor correction circuit based on a hybrid H bridge comprises an inductor L and a switching tube Q1、Q2、Q3Diode D1～D9Capacitor C1、C2(ii) a The method is characterized in that:
one side of the AC power supply Vs is respectively connected with a diode D1Anode, diode D2A cathode, the connection node constituting a terminal b;
the other side of the AC power supply Vs is connected with one end of an inductor L, and the other end of the inductor L is respectively connected with a diode D3Anode, diode D4A cathode; the other end of the inductor L and the diode D3、D4The connection nodes of (a) form an endpoint a;
switch tube Q3The drain electrodes are respectively connected with a diode D1Cathode, diode D3Cathode, diode D7Anode and switch tube Q1A drain electrode; switch tube Q3Drain and diode D1、D3、D7And a switching tube Q1The connection node of the drain forms an end point c;
switch tube Q3The source electrodes are respectively connected with a diode D2Anode, diode D4Anode, diode D8Cathode and switch tube Q2A source electrode; switch tube Q3Source and diode D2、D4、D8And a switching tube Q2The connection node of the source electrode forms an end point d;
switch tube Q2Drain electrode connected with switch tube Q1A source connected to the node to form a terminal n;
diode D7Cathode connection capacitor C1One end, the connection node of which constitutes an endpoint p;
capacitor C1The other end is connected with a capacitor C2One end, the connecting point is connected with the endpoint n;
capacitor C2Cathode connection diode D8An anode, the connection node of which forms an endpoint m;
switch tube Q1Anti-parallel diode D5Switching tube Q2Anti-parallel diode D6Switching tube Q3Anti-parallel diode D9；
The end point p and the end point m are respectively connected with a load RLTwo ends.
2. The hybrid H-bridge based single-phase five-level power factor correction circuit of claim 1, wherein: the end point a, the end point c, the end point d and the end point n form four ports of a hybrid H-bridge network structure, and bridge arms on two sides of the hybrid H-bridge are divided into diodes and full-control devices.
3. The hybrid H-bridge based single-phase five-level power factor correction circuit of claim 1, wherein: the switch tube Q1、Q2、Q3Is an insulated gate bipolar transistor IGBT, an integrated gate commutated thyristor IGCT, or a power field effect transistor MOSFET.
4. The hybrid H-bridge based single-phase five-level power factor correction circuit of claim 1, wherein: the capacitor C1、C2The split capacitors are connected in series with a direct current bus.
5. The single-phase five-level power factor correction circuit based on a hybrid H-bridge of any of claims 1-4, comprising the following switching modes:
a first switching mode: at this time, the positive half cycle of the AC power supply Vs, the switch tube Q3Conducting, current passing through inductor L and switching tube Q3Finally via a diode D2、D3Flowing back, in the process, the inductor L stores energy and the load RLBy a capacitor C1、C2Supplying power;
and a second switching mode: at this time, the positive half cycle of the AC power supply Vs, the switch tube Q1Conducting current through inductor L and diode D3、D8、D2And a capacitor C2In the process, the AC power supply Vs and the inductor L simultaneously couple the capacitor C2Charging, load RLBy a capacitor C1The power supply is realized, and the conversion process of the first switch mode and the second switch mode is a boosting process;
and (3) switching mode III: in this case, the positive half cycle of the AC power source Vs, the current passes through the inductor L and the diode D3、D7、D8、D2And a capacitor C1、C2In the process, the AC power supply Vs and the inductor L simultaneously supply the load RLAnd a capacitor C1、C2Supply, capacitor C1、C2Charging;
and a fourth switching mode: at this time, the negative half cycle of the AC power supply Vs, the switch tube Q3On and current flows through the diode D1、D4Switching tube Q3Finally, the voltage returns to the alternating current power supply Vs through the inductor L, in the process, the inductor L stores energy, and the load RLBy a capacitor C1、C2Supplying power;
a switching mode five: at this time, the negative half cycle of the AC power supply Vs, the switch tube Q2On and current flows through the diode D1、D8、D4、D7And a split capacitor C1Finally, the current flows through the inductor L and returns to the AC power source Vs, and in the process, the AC power source Vs and the inductor L simultaneously supply the capacitor C1The conversion process from the charging mode four to the switching mode five is one literPressing;
a switching mode six: in this case, the negative half cycle of the AC source Vs, the current passes through the diode D1、D4、D7、D8And a capacitor C1、C2Returns to the AC power supply Vs through the inductor L, and in the process, the AC power supply Vs and the inductor L simultaneously supply the load RLAnd a capacitor C1、C2Supply, capacitor C1、C2And (6) charging.
6. The hybrid H-bridge based single-phase five-level power factor correction circuit of claim 5, wherein: using diodes D7、D8The following circuit protection is performed:
one, two diodes D are adopted7 D8Ensuring one-way circulation of power and ensuring the capacitance C1、C2Will only flow to the load RLFlow without flowing backward;
secondly, when the circuit is in failure, the capacitor C1、C2The protection can be well realized;
thirdly, in the mode switching process, the diode is used as a boosting voltage clamping diode;
and fourthly, when the voltage is lower than the voltage of the direct current bus in the energy storage process of the inductor L in the first switching mode and the fourth switching mode, the voltage clamping effect is achieved.
7. The single-phase five-level power factor correction circuit based on a hybrid H-bridge according to any one of claims 1 to 4, characterized in that: the control of a closed-loop system is realized by adopting a double closed-loop PI control method, wherein voltage is used as the outer loop control of a control loop, and current is used as an inner loop control mode;
the current inner loop control is adopted to realize the sine of the current waveform, meanwhile, the output of the current inner loop obtains a reference voltage vector through an equivalent circuit input and output function expression, the reference voltage vector is used as a control parameter of a pulse width modulation wave, and the other reference quantity of the control input voltage is used as the modulation wave input by sampling the voltage of a power grid and adopting a phase-locked loop PLL (phase-locked loop).
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CN111416533B (en) * 2020-04-24 2023-07-14 三峡大学 Single-phase five-level rectifier based on four-port plug-in
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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101728964A (en) * 2010-01-12 2010-06-09 浙江大学 Bridgeless power factor correction converter with single inductance and three levels
CN103219907A (en) * 2013-03-20 2013-07-24 上海交通大学 Five-level inverter
WO2013166870A1 (en) * 2012-05-10 2013-11-14 Huawei Technologies Co., Ltd. Multilevel inverter device and method
CN104779813A (en) * 2014-01-09 2015-07-15 洛克威尔自动控制技术股份有限公司 Multilevel converter systems and methods with reduced common mode voltage
CN107896069A (en) * 2017-12-25 2018-04-10 三峡大学 A kind of New single-phase mixes three-level rectifier
CN109067226A (en) * 2018-10-17 2018-12-21 广东电网有限责任公司 Five lever boosting type inverters of one kind and its control method
CN208424231U (en) * 2018-05-03 2019-01-22 易事特集团股份有限公司 Five level topology units and five level AC/DC convertors
CN109831113A (en) * 2019-03-04 2019-05-31 易事特集团股份有限公司 Converter topology unit and converter device
CN110086360A (en) * 2019-04-22 2019-08-02 浙江大学 A kind of five level high efficiency rectifiers

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101728964A (en) * 2010-01-12 2010-06-09 浙江大学 Bridgeless power factor correction converter with single inductance and three levels
WO2013166870A1 (en) * 2012-05-10 2013-11-14 Huawei Technologies Co., Ltd. Multilevel inverter device and method
CN103219907A (en) * 2013-03-20 2013-07-24 上海交通大学 Five-level inverter
CN104779813A (en) * 2014-01-09 2015-07-15 洛克威尔自动控制技术股份有限公司 Multilevel converter systems and methods with reduced common mode voltage
CN107896069A (en) * 2017-12-25 2018-04-10 三峡大学 A kind of New single-phase mixes three-level rectifier
CN208424231U (en) * 2018-05-03 2019-01-22 易事特集团股份有限公司 Five level topology units and five level AC/DC convertors
CN109067226A (en) * 2018-10-17 2018-12-21 广东电网有限责任公司 Five lever boosting type inverters of one kind and its control method
CN109831113A (en) * 2019-03-04 2019-05-31 易事特集团股份有限公司 Converter topology unit and converter device
CN110086360A (en) * 2019-04-22 2019-08-02 浙江大学 A kind of five level high efficiency rectifiers

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
A Proposed Single-Phase Five-Level PFC Rectifier for Smart Grid Applications: An Experimental Evaluation;Vitor Monteiro等;《IECON 2019-45th Annual Conference of the IEEE Industrial Electronics Society》;20191209;第3436-3441页 *
Five-Level Reduced-Switch-Count Boost PFC Rectifier With Multicarrier PWM;Hani Vahedi等;《IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS》;20161031;第52卷(第5期);第4201-4207页 *
基于开关–电容网络的三电平直流 变换器简易构造法;秦岭等;《中国电机工程学报》;20170120;第 37 卷(第 2 期);第635-642页 *

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