CN113726199B - Low-output ripple boost rectifier and control method thereof - Google Patents
Low-output ripple boost rectifier and control method thereof Download PDFInfo
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- CN113726199B CN113726199B CN202111029713.7A CN202111029713A CN113726199B CN 113726199 B CN113726199 B CN 113726199B CN 202111029713 A CN202111029713 A CN 202111029713A CN 113726199 B CN113726199 B CN 113726199B
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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
- 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
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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
- H02M1/14—Arrangements for reducing ripples from dc input or output
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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
- H02M1/32—Means for protecting converters other than automatic disconnection
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Abstract
The invention discloses a low-output ripple boost rectifier and a control method thereof, and belongs to the technical field of power electronic converters. Wherein L is 1 One end is connected with U in Positive end, the other end S 1 Connecting; l (L) 2 One end is connected with U in One end, L 2 The other end is connected with S 2 Is connected with the connecting part of the connecting part; l (L) 3 One end is connected with D 2 Cathode, the other end and S 4 Connecting; d (D) 1 The anodes are respectively connected with S 2 And S is 3 Capacitor C 2 And C 3 Is a member of the group; d (D) 1 The cathodes are respectively connected with L 1 One end and S 1 ；D 2 The anodes are respectively connected with S 2 And L 2 One end; d (D) 2 The cathodes are respectively connected with S 1 L and 3 one end and C 1 One end is provided. The rectifier of the invention belongs to an integrated rectifier, and the multiplexing technology of power devices is utilized, so that the number of elements of the rectifier is obviously reduced, the system cost is reduced, the integration level is improved, and the occupied space of a circuit is small; the body diode of the power switch tube is not involved in the working process, the switching loss is small, the efficiency is high, the cost is low, and the working life is long.
Description
Technical Field
The invention relates to the technical field of power electronic converters, in particular to a low-output ripple boost rectifier and a control method thereof.
Background
Along with the development of modern science and technology, new energy industry is vigorously developed, and new energy needs to be converted into electric energy for equipment to use, if primary energy fails in the process of converting into electric energy, not only can the resource waste be caused, but also the power system and the electric equipment are damaged, so that the reliability of the electric energy quality must be ensured. The PWM rectification technology plays an important role in electric energy conversion, so that the development of a high-efficiency, high-reliability and high-power-density rectifier has great practical significance.
The traditional PWM rectifying circuit is mainly in bridge topology, and because two power switching tubes on one bridge arm are directly connected in series, hidden danger of bridge arm straight-through exists, and the reliability of the system is affected. In addition, in the conventional bridge rectifier circuit, when the power switch tube is turned off, the inductor current flows through the body diode of the switch tube, and as the switching frequency is increased, the problem of reverse recovery of the body diode of the power switch tube tends to be serious, the specific gravity of reverse recovery loss in the total loss of the converter is greatly increased, and in the occasion that the requirement on the power reliability is higher, a rectifier circuit with high efficiency and high reliability is needed.
In recent years, aiming at solving the problem of the second harmonic of the direct current bus of the rectifier, a plurality of researches on a rectifier harmonic device are carried out by vast students at home and abroad. In the document The Research of Single-phase PWM Rectifier Based on Direct Current Control Technology, an LC resonant circuit is connected in parallel to the dc bus end of the rectifier to filter out the higher harmonic component in the dc bus voltage, however, in order to eliminate the second harmonic in the single-phase system, the filter inductance and capacitance used are still large, and especially the volume of the added inductance is large. Meanwhile, the parameters of the inductance and the capacitance need to be accurately calculated, and once the power grid frequency deviates, the system compensation effect can be poor.
Disclosure of Invention
1. Technical problem to be solved by the invention
The invention aims to provide a low-output ripple boost rectifier and a control method thereof, and the converter can overcome the defects that a bridge arm through hidden trouble exists in a traditional bridge rectifier circuit and a switching tube diode participates in work, and can also inhibit second harmonic in direct-current side voltage.
2. Technical proposal
In order to achieve the above purpose, the technical scheme provided by the invention is as follows:
the invention relates to a low-output ripple boost rectifier, which comprises a main circuit and a filter circuit, wherein the main circuit comprises a power switch tube S 1 、S 2 Inductance L 1 、L 2 Capacitance C 1 、C 2 Diode D 1 And D 2 The method comprises the steps of carrying out a first treatment on the surface of the AC power supply U in Reference positive terminal and inductance L of (2) 1 And L 2 Is connected with one end of the inductor L 1 Another end and diode D 1 Cathode is connected with inductance L 2 And diode D 2 Anode is connected with diode D 1 Anode and power switch tube S respectively 2 Terminal 2, capacitance C of (2) 2 Is connected to the node B; diode D 2 Cathode and power switch tube S respectively 1 Terminal 1, capacitance C of (2) 1 Is connected to node a; capacitor C 1 And C 2 The other end of (a) is connected with an alternating current power supply U in Is a negative reference terminal; wherein, the power switch tube S 1 And S is 2 Is connected with the two ends of the diode in anti-parallel; nodes A and B form an output terminal; the filter circuit is connected between the nodes A and B.
Further, the filter circuit is an active filter circuit comprising an inductor L 3 Capacitance C 3 Power switch tube S 3 And S is 4 Inductance L 3 One end is connected with the node A, and the other end is connected with the power switch tube S 4 2 terminal of (2) and power switch tube S 3 1 terminal of (C) capacitor C 3 One end is connected with the node B, and the other end is connected with the power switch tube S 4 1 end connection of the power switch tube S 3 Is connected to node B at the 2-terminal.
Further, the diode D 1 And D 2 Is a fast recovery diode.
Further, a load R is also connected between the nodes a and B.
The invention discloses a control method of a low-output ripple boost rectifier, which is characterized by comprising the following steps of: the working principle of the rectifier in positive and negative half waves of the sine modulation wave is the same;
in the positive half period of the input power supply, when the modulation wave is larger than the carrier wave, the power switch tube S is controlled 2 Conduction, S 1 Cut-off AC power supply U in And capacitor C 2 Through a switching tube S 2 Inductance L 2 Charging and flowing through inductance L 2 Is the current I of (2) L2 Increase, capacitance C 1 Discharging, and supplying power to a load R;
when the modulation wave is smaller than the carrier wave, the power switch tube S is controlled 1 Turn off, S 2 Off, diode D 2 Conduction and capacitance C 2 And discharging to supply power to the load R.
In the negative half period of the input power supply, when the modulation wave is larger than the carrier wave, the power switch tube S is controlled 1 Conduction, S 2 Cut-off AC power supply U in And capacitor C 1 Through a switching tube S 1 Inductance L 1 Charging and flowing through inductance L 1 Is the current I of (2) L1 Increase, capacitance C 2 Discharging, and supplying power to a load R;
when the modulation wave is smaller than the carrier wave, the power switch tube S is controlled 2 Disconnection, S 1 Off, diode D 1 Conduction and capacitance C 1 And discharging to supply power to the load.
Further, the filter circuit control and the main circuit control are mutually independent; at inductance L 3 Is the current I of (2) L3 When the modulation wave is larger than 0, the power switch tube S is used for switching the carrier wave 4 Turn off, S 3 Conducting; power switch tube S 3 Inductance L 3 And a load R form a closed loop, an inductance L 3 Discharge, current I L3 Through power switch tube S 3 The body diode is injected into the direct current bus in a follow current mode;
when the modulation wave is smaller than the carrier wave, the power switch tube S 4 Conduction, S 3 Turning off; capacitor C 3 Power switch tube S 4 Inductance L 3 And a load R form a closed loop, a capacitor C 3 Discharge, inductance L 3 Charging, current I L3 Through power switch tube S 4 Injecting a direct current bus;
the direct current bus is a node A-capacitor C 1 Capacitance C 2 -a node B leg.
At inductance L 3 Is the current I of (2) L3 When the modulation wave is smaller than 0 and the modulation wave is larger than the carrier wave, the power switch tube S 3 Conduction, S 4 Closing, power switching tube S 3 And a direct current bus to form a closed loop, and currentFrom the A end of the direct current bus through the inductor L 3 And a power switch tube S 3 Flows to the B end of the direct current bus, and the energy on the bus passes through S 3 Injection inductance L 3 Inductance L 3 Storing energy;
when the modulation wave is smaller than the carrier wave, the power switch tube S 3 Closing, S 4 Conducting; inductance L 3 Capacitance C 3 Power switch tube S 4 And a closed loop is formed by the direct current bus, and the current I L3 Through the direct current bus A end and through the inductance L 3 Power switch tube S 4 Body diode and capacitor C 3 Flow to DC bus B end, inductance L 3 Releasing energy, capacitance C 3 Stored energy.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following remarkable effects:
(1) The low-output ripple boost rectifier belongs to an integrated rectifier, and the multiplexing technology of power devices is utilized, so that the number of elements of the rectifier is obviously reduced, the system cost is reduced, the integration level is improved, and the occupied space of a circuit is small; the body diode of the power switch tube is not involved in the working process, the switching loss is small, the efficiency is high, the cost is low, and the working life is long.
(2) The low-output ripple boost rectifier has higher boost capability by controlling 2 power switching tubes S 1 And S is 2 The power supply is suitable for high-voltage high-power occasions, and the voltage of the output direct current bus is more than twice of the peak voltage of the input power supply; the rectifier adopts voltage and current double closed-loop control, and has the advantages of high precision and quick dynamic response.
(3) According to the control method of the low-output ripple boost rectifier, the two boost bridge arm units work alternately according to the positive and negative conditions of the input current, only one power switching tube works at high frequency in each half power frequency period, and the loss of the switching tube is reduced; the harmonic component in the power transmitted from the alternating current side to the direct current side is transmitted to the inductance and the capacitance of the filter circuit, so that the voltage fluctuation of the direct current side capacitance is reduced, and meanwhile, the actual current of the current loop does not contain harmonic components; the invention adopts active filtering, greatly reduces the capacity of the capacitor at the side of the direct current bus, and reduces the system loss due to the inductance and the capacitance of the filtering circuit.
Drawings
FIG. 1 is an overall circuit diagram of the present invention;
FIG. 2 is a schematic circuit diagram of a main circuit of the present invention;
FIG. 3 is a schematic diagram of a circuit configuration of a filter circuit according to the present invention;
FIG. 4 is a schematic diagram of a main circuit mode of operation of the present invention;
FIG. 5 is a schematic diagram of a second mode of operation of the main circuit of the present invention;
FIG. 6 is a schematic diagram of a primary circuit mode of operation of the present invention;
FIG. 7 is a schematic diagram of a main circuit mode of operation of the present invention;
FIG. 8 is a schematic diagram of a filter circuit according to the present invention;
FIG. 9 is a second schematic diagram of the operation mode of the filter circuit of the present invention;
FIG. 10 is a schematic diagram illustrating a third mode of operation of the filter circuit of the present invention;
FIG. 11 is a schematic diagram of a fourth mode of operation of the filter circuit of the present invention;
FIG. 12 is a control circuit block diagram of the main circuit of the present invention;
FIG. 13 is a control circuit block diagram of the filter circuit of the present invention;
FIG. 14 is a schematic diagram of the input voltage, input current, inductor current and drive waveforms of the main circuit of the present invention;
FIG. 15 is a schematic diagram of the output voltage waveform of the main circuit of the present invention;
FIG. 16 is a schematic diagram of a harmonic current waveform of a filter circuit of the present invention;
fig. 17 is a schematic diagram of the waveform of the output voltage of the filter circuit of the present invention.
Detailed Description
For a further understanding of the present invention, the present invention will be described in detail with reference to the drawings and examples.
Example 1
Referring to fig. 1 and 2, a low-output ripple boost rectifier of the present embodiment includes a main circuit including a power switch tube S 1 、S 2 Inductance L 1 、L 2 Capacitance C 1 、C 2 Diode D 1 And D 2 The method comprises the steps of carrying out a first treatment on the surface of the AC power supply U in Reference positive terminal and inductance L of (2) 1 And L 2 Is connected with one end of the inductor L 1 And diode D 1 Cathode is connected with inductance L 2 And diode D 2 Anode is connected with diode D 1 Anode and power switch tube S respectively 2 Terminal 2, capacitance C of (2) 2 Is connected to the node B; diode D 2 Cathode and power switch tube S respectively 1 Terminal 1, capacitance C of (2) 1 Is connected to node a; capacitor C 1 And C 2 The other end of (a) is connected with an alternating current power supply U in Is a negative reference terminal; wherein, the power switch tube S 1 、S 2 Is connected in anti-parallel with the two ends of the diode. Nodes a and B form the output.
FIG. 12 is a block diagram of a control circuit for a main circuit according to the present embodiment, which adopts voltage-current double closed loop control, i.e. reference voltage U ref And output voltage U 0 Sampling value comparison, obtaining error voltage signal U by error amplifier e Error voltage signal U e And input voltage U in Multiplying the sampling values to obtain a reference I of the current loop ref Will input current I in Feedback signal and reference current I ref Comparing the output power with the high-frequency triangular wave to generate high-frequency pulse signal, and outputting the pulse signal to the power switch tube S 1 ，S 2 Is provided.
Fig. 14 and 15 are simulation waveforms of the main circuit of the present embodiment, and simulation parameters are as follows: 220V/50HZ input voltage, 800V output voltage, 2KW output power, and waveform U input voltage in And input current I in It can be seen that the input current can track the input voltage well, the rectifier works under the unit power factor, but the output voltage has large ripple and needs to adoptThe filter circuit suppresses ripple. By two inductor currents I L1 And I L2 Power switch tube S 1 And S is 2 As can be seen from the driving waveforms of the two power switching tubes S 1 ，S 2 The current operates in positive and negative half cycles of the input voltage. The working modes comprise a first mode, a second mode and a third mode, and a fourth mode, and the detailed conditions are as follows:
modality one
As shown in fig. 4, in the positive half period of the input power, when the modulation wave is larger than the carrier wave, the power switch tube S 1 Turn-off, diode D 1 ，D 2 Turn off, S 2 Conducting. Input voltage U in Inductance L 2 Power switch tube S 2 And capacitor C 2 Forming a closed loop. AC power supply U in And capacitor C 2 Through a switching tube S 2 Inductance L 2 Charging and flowing through inductance L 2 Is the current I of (2) L2 Increase, capacitance C 1 And discharging to supply power to the load R.
Mode two
As shown in fig. 5, in the positive half period of the input power, when the modulation wave is smaller than the carrier wave, the power switch tube S 1 Turn off, S 2 Turn-off, diode D 1 Turn-off, diode D 2 Opening, inputting power U in Inductance L 2 Diode D 2 And capacitor C 1 Form a closed loop and flow through the inductor L 2 Is the current I of (2) L2 And (3) reducing. Capacitor C 2 And discharging to supply power to the load R.
Modality III
As shown in fig. 6, in the negative half period of the input power supply, when the modulation wave is larger than the carrier wave, the power switch tube S 2 Turn-off, diode D 1 ，D 2 Turn off, S 1 Conducting, input voltage U in Inductance L 1 Power switch tube S 1 And capacitor C 1 Forming a closed loop. AC power supply U in And capacitor C 1 Through a switching tube S 1 Inductance L 1 Charging and flowing through inductance L 1 Is the current I of (2) L1 Increase, capacitance C 2 Discharging and supplying power to load。
Modality IV
As shown in fig. 7, in the negative half period of the input power supply, when the modulation wave is smaller than the carrier wave, the power switch tube S 1 Turn off, S 2 Turn-off, diode D 2 Turn-off, diode D 1 Opening, inputting power U in Inductance L 1 Diode D 1 And capacitor C 2 Form a closed loop and flow through the inductor L 1 Is the current I of (2) L1 And (3) reducing. Capacitor C 1 And discharging to supply power to the load.
FIG. 3 is a schematic diagram of a filter circuit in the present embodiment, including an inductor L 3 And capacitor C 3 Power switch tube S 3 And S is 4 Inductance L 3 One end is connected with the node A, and the other end is connected with the power switch tube S 4 2 terminal of (2) and power switch tube S 3 1 terminal of (C) capacitor C 3 One end is connected with the node B, and the other end is connected with the power switch tube S 4 1 end connection of the power switch tube S 3 Is connected to node B at the 2-terminal.
FIG. 13 is a block diagram of a control circuit used in the filter circuit of the present embodiment, which is independent of the control of the main circuit, and uses voltage-current double closed loop control, and for the voltage loop, takes the capacitance C 3 Voltage U on C3 As a voltage outer ring control object, comparing with an expected voltage, regulating by PI, and calculating an expected current reference value I required to be compensated at the direct current side of a main circuit by using power balance L3* The key point of control is that the voltage loop tracks the capacitor side C 3 Voltage and output desired current I compensating harmonic wave of DC side of main circuit L3 At the same time, the current loop allows the direct-current side harmonic current to reach the current expected value.
Fig. 16 and 17 show simulated waveforms of the rectifier after active filtering, and fig. 15 shows the harmonic current I on the dc side L3 And an expected value I L3* The wave forms of the output direct current voltage waveform are obviously reduced, the filtering effect is good, the simulation example achieves the expected effect, and the active filtering provided by the invention is verifiedThe circuit control circuit is correctly viable. The filter circuit modes comprise a first mode, a second mode and a third mode, and a fourth mode, and the details are as follows:
modality one
As shown in fig. 8, inductor current I L3 Greater than 0, when the modulation wave is greater than the carrier wave, the power switch tube S 4 Turn off, S 3 Conducting; power switch tube S 3 Inductance L 3 And a load R form a closed loop, an inductance L 3 Discharge, current I L3 Through power switch tube S 3 The body diode freewheels into the direct current bus.
Mode two
As shown in fig. 9, inductor current I L3 Greater than 0, when the modulation wave is smaller than the carrier wave, the power switch tube S 4 Conduction, S 3 Turning off; capacitor C 3 Power switch tube S 4 Inductance L 3 And a load R form a closed loop, a capacitor C 3 Discharge, inductance L 3 Charging, current I L3 Through power switch tube S 4 And injecting a direct current bus. Wherein the direct current bus is a node A-capacitor C 1 Capacitance C 2 -a node B leg.
Modality III
As shown in fig. 10, inductor current I L3 Less than 0, when the modulation wave is greater than the carrier wave, the power switch tube S 3 Conduction, S 4 Closing, power switching tube S 3 And a closed loop is formed by the direct current bus, and current passes through the inductor L from the end A of the direct current bus 3 And a power switch tube S 3 Flows to the B end of the direct current bus, and the energy on the bus passes through S 3 Injection inductance L 3 Inductance L 3 And (5) storing energy.
Modality IV
As shown in fig. 11, inductor current I L3 Less than 0, when the modulation wave is less than the carrier wave, the power switch tube S 3 Closing, S 4 Conducting; inductance L 3 Capacitance C 3 Power switch tube S 4 And a closed loop is formed by the direct current bus, and the current I L3 Through the direct current bus A end and through the inductance L 3 Power switch tube S 4 Body diode and capacitor C 3 Flow directionDC bus B end, inductance L 3 Releasing energy, capacitance C 3 Stored energy.
This embodiment has the following advantages:
1. compared with the traditional bridge rectifier circuit, the bridge rectifier circuit has no bridge arm through problem and no reverse recovery problem of a diode of a switching tube;
2. the main circuit adopts voltage and current double closed-loop control, has fast dynamic response, high input current power factor and stable output voltage, and has stronger inhibition capability on fluctuation of a power supply and a load;
3. the modulation mode of the embodiment is half-period unipolar modulation, only one power switching tube works at high frequency in each half power frequency period, and the loss of the switching tube is small;
4. the circuit of the embodiment has higher boosting capability, and the output DC bus voltage is more than twice of the peak voltage of the input power supply, so that the circuit is suitable for high-voltage high-power occasions;
5. the control mode of the filter circuit is independent of the main circuit, the compensation current tracks the expected value, the output voltage ripple is small, and the actual current of the current loop does not contain harmonic components;
6. the embodiment adopts active filtering, greatly reduces the capacity of the capacitor at the side of the direct current bus, reduces the inductance and the capacity of the filtering circuit, and reduces the system loss.
The invention and its embodiments have been described above by way of illustration and not limitation, and the invention is illustrated in the accompanying drawings and described in the drawings in which the actual structure is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present invention.
Claims (1)
1. A control method of a low-output ripple boost rectifier is characterized in that: the rectifier comprises a main circuit and a filter circuit, wherein the main circuit comprises a power switch tubeS 1 、S 2 Inductance (inductance)L 1 、L 2 Capacitance, capacitanceC 1 、C 2 DiodeD 1 AndD 2 the method comprises the steps of carrying out a first treatment on the surface of the AC power supplyU in Reference positive terminal and inductance of (a)L 1 AndL 2 is connected with one end of the inductorL 1 Another end and diodeD 1 Cathode is connected with an inductorL 2 And the other end of the diodeD 2 Anode is connected with diodeD 1 Anode and power switch tube respectivelyS 2 Terminal 2, capacitance of (2)C 2 Is connected to the node B; diodeD 2 Cathode and power switch tube respectivelyS 1 Terminal 1, capacitance of (2)C 1 Is connected to node a; capacitance deviceC 1 AndC 2 is connected with an alternating current power supply at the other endU in Is a negative reference terminal; wherein, power switch tubeS 1 AndS 2 is connected with the two ends of the diode in anti-parallel; nodes A and B form an output terminal; the filter circuit is connected between the nodes A and B;
the filter circuit is an active filter circuit and comprises an inductorL 3 CapacitanceC 3 Power switch tubeS 3 AndS 4 inductance (inductance)L 3 One end is connected with the node A, and the other end is connected with the power switch tubeS 4 2-terminal of (2) and power switch tubeS 3 1 terminal connection, capacitanceC 3 One end is connected with the node B, and the other end is connected with the power switch tubeS 4 1 terminal connection, power switch tubeS 3 Is connected with node B at the 2 end;
the diodeD 1 AndD 2 is a fast recovery diode;
a load R is also connected between the nodes A and B;
the working principle of the rectifier in positive and negative half waves of the sine modulation wave is the same;
in the positive half period of the input power supply, when the modulation wave is larger than the carrier wave, the power switch tube is controlledS 2 The electric conduction is carried out,S 1 disconnecting, ac power supplyU in And a capacitorC 2 Through a switching tubeS 2 Inductance-giving deviceL 2 Charging, flowing through an inductorL 2 Is (1) the current of the (a)I L2 Increase, capacitanceC 1 Discharging, and supplying power to a load R;
when the modulation wave is smaller than the carrier wave, the power switch tube is controlledS 1 The switch-off is performed and the switch-off is performed,S 2 disconnection, diodeD 2 Conduction and capacitanceC 2 Discharging, and supplying power to a load R;
in the negative half period of the input power supply, when the modulation wave is larger than the carrier wave, the power switch tube is controlledS 1 The electric conduction is carried out,S 2 disconnecting, ac power supplyU in And a capacitorC 1 Through a switching tubeS 1 Inductance-giving deviceL 1 Charging, flowing through an inductorL 1 Is (1) the current of the (a)I L1 Increase, capacitanceC 2 Discharging, and supplying power to a load R;
when the modulation wave is smaller than the carrier wave, the power switch tube is controlledS 2 The switch-off is performed and the switch-off is performed,S 1 disconnection, diodeD 1 Conduction and capacitanceC 1 Discharging, and supplying power to a load;
the filter circuit control and the main circuit control are mutually independent; the voltage and current double closed-loop control is adopted, and the capacitor is adopted for the voltage ringC 3 Voltage onU C3 As a voltage outer ring control object, comparing with an expected voltage, regulating by PI, and calculating an expected current reference value to be compensated on the DC side of the main circuit by using power balanceI L3* The key of control is that the voltage loop tracks the capacitor sideC 3 Voltage and output desired current compensating harmonic wave of DC side of main circuitI L3 Meanwhile, the current loop enables the harmonic current at the direct current side to reach the expected value of the current; at inductance L 3 Is (1) the current of the (a)I L3 When the modulation wave is larger than 0, the power switch tube is used for switching the carrier waveS 4 The switch-off is performed and the switch-off is performed,S 3 conducting; power switch tubeS 3 Inductance (inductance)L 3 And a loadRForms a closed loop, an inductorL 3 Discharge, currentI L3 Through power switch tubeS 3 The body diode is injected into the direct current bus in a follow current mode;
when the modulation wave is smaller than the carrier wave, the power switch tubeS 4 The electric conduction is carried out,S 3 turning off; capacitance deviceC 3 Power switch tubeS 4 InductanceL 3 And a loadRForms a closed loop, a capacitorC 3 Discharge, inductanceL 3 Charging, currentI L3 Through power switch tubeS 4 Injecting a direct current bus;
the direct current bus is a node A-capacitor C 1 Capacitance C 2 -a node B leg;
at inductance L 3 Is (1) the current of the (a)I L3 When the modulation wave is smaller than 0 and the modulation wave is larger than the carrier wave, the power switch tubeS 3 The electric conduction is carried out,S 4 closing, power switching tubeS 3 And a closed loop is formed by the direct current bus, and current passes through the inductor from the end A of the direct current busL 3 And power switch tubeS 3 Flow to the B end of the direct current bus, and the energy on the bus passes throughS 3 Injection inductorL 3 Inductance (inductance)L 3 Storing energy;
when the modulation wave is smaller than the carrier wave, the power switch tubeS 3 The closing of the container is performed and,S 4 conducting; inductanceL 3 CapacitanceC 3 Power switch tubeS 4 And a direct current bus to form a closed loop, and currentI L3 Through the direct current bus A end and through the inductorL 3 Power switch tubeS 4 Body diode and capacitorC 3 Flow to DC bus B end, inductanceL 3 Energy release, capacitanceC 3 Stored energy.
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1023755A (en) * | 1996-07-02 | 1998-01-23 | Oki Electric Ind Co Ltd | Active filter circuit |
| JP2004248383A (en) * | 2003-02-13 | 2004-09-02 | Meidensha Corp | Parallel type ac-dc conversion device |
| CN101183836A (en) * | 2007-11-16 | 2008-05-21 | 南京航空航天大学 | Dual-boosting energy feedback type PWM rectification circuit |
| CN203261257U (en) * | 2013-05-27 | 2013-10-30 | 安徽巨日华电新能源有限公司 | Solar photovoltaic power generation single-phase grid-connected inverter |
| CN203387430U (en) * | 2013-07-25 | 2014-01-08 | 天津大学 | Micro photovoltaic grid connected inverter for optimization of direct current bus capacitor |
| WO2017107401A1 (en) * | 2015-12-23 | 2017-06-29 | 厦门科华恒盛股份有限公司 | Direct-current bus voltage ripple compensation method and photovoltaic inverter |
| CN108377102A (en) * | 2018-03-30 | 2018-08-07 | 南京航空航天大学 | A method of reducing capacitance in monophasic pulses if load AC-DC power supplys |
| CN109067154A (en) * | 2018-08-31 | 2018-12-21 | 北京交通大学 | A kind of active filter and the method for eliminating train DC bus secondary resonance |
| CN109980978A (en) * | 2019-04-01 | 2019-07-05 | 安徽工业大学 | A kind of converter and its modulator approach |
| US10727732B1 (en) * | 2019-10-04 | 2020-07-28 | Raytheon Company | Active line filter utilizing input current regulation |
| CN112217381A (en) * | 2020-09-17 | 2021-01-12 | 郑州轻工业大学 | Single-phase converter direct-current bus voltage secondary ripple suppression circuit and method |
| CN112910244A (en) * | 2021-01-28 | 2021-06-04 | 三峡大学 | Single-phase three-level power factor correction circuit of hybrid bridge arm |
| CN113258795A (en) * | 2021-04-13 | 2021-08-13 | 江苏大学 | Small-capacitance power converter, power grid side power quality control working method thereof and bus voltage suppression control method |
-
2021
- 2021-09-03 CN CN202111029713.7A patent/CN113726199B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1023755A (en) * | 1996-07-02 | 1998-01-23 | Oki Electric Ind Co Ltd | Active filter circuit |
| JP2004248383A (en) * | 2003-02-13 | 2004-09-02 | Meidensha Corp | Parallel type ac-dc conversion device |
| CN101183836A (en) * | 2007-11-16 | 2008-05-21 | 南京航空航天大学 | Dual-boosting energy feedback type PWM rectification circuit |
| CN203261257U (en) * | 2013-05-27 | 2013-10-30 | 安徽巨日华电新能源有限公司 | Solar photovoltaic power generation single-phase grid-connected inverter |
| CN203387430U (en) * | 2013-07-25 | 2014-01-08 | 天津大学 | Micro photovoltaic grid connected inverter for optimization of direct current bus capacitor |
| WO2017107401A1 (en) * | 2015-12-23 | 2017-06-29 | 厦门科华恒盛股份有限公司 | Direct-current bus voltage ripple compensation method and photovoltaic inverter |
| CN108377102A (en) * | 2018-03-30 | 2018-08-07 | 南京航空航天大学 | A method of reducing capacitance in monophasic pulses if load AC-DC power supplys |
| CN109067154A (en) * | 2018-08-31 | 2018-12-21 | 北京交通大学 | A kind of active filter and the method for eliminating train DC bus secondary resonance |
| CN109980978A (en) * | 2019-04-01 | 2019-07-05 | 安徽工业大学 | A kind of converter and its modulator approach |
| US10727732B1 (en) * | 2019-10-04 | 2020-07-28 | Raytheon Company | Active line filter utilizing input current regulation |
| CN112217381A (en) * | 2020-09-17 | 2021-01-12 | 郑州轻工业大学 | Single-phase converter direct-current bus voltage secondary ripple suppression circuit and method |
| CN112910244A (en) * | 2021-01-28 | 2021-06-04 | 三峡大学 | Single-phase three-level power factor correction circuit of hybrid bridge arm |
| CN113258795A (en) * | 2021-04-13 | 2021-08-13 | 江苏大学 | Small-capacitance power converter, power grid side power quality control working method thereof and bus voltage suppression control method |
Non-Patent Citations (1)
| Title |
|---|
| 功率解耦型无电解电容PFC电路分析;陈梅;《中国优秀硕士学位论文全文数据库》;20170131;第2.3章 * |
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