CN114244104A - High-gain zero-ripple passive clamping type Boost converter and control method thereof - Google Patents

High-gain zero-ripple passive clamping type Boost converter and control method thereof Download PDF

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CN114244104A
CN114244104A CN202111599636.9A CN202111599636A CN114244104A CN 114244104 A CN114244104 A CN 114244104A CN 202111599636 A CN202111599636 A CN 202111599636A CN 114244104 A CN114244104 A CN 114244104A
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capacitor
diode
respectively connected
inductor
switch tube
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胡雪峰
张乔
徐晗
余振海
沈浩
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Anhui University of Technology AHUT
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Anhui University of Technology AHUT
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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
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/06—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider
    • H02M3/07—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps
    • 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
    • H02M1/32—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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters

Abstract

The invention discloses a high-gain zero-ripple passive clamping type Boost converter and a control method thereof, and belongs to the technical field of power electronic converters. L in the inventioninOne end is connected with a power supply VinPositive electrode, another end is connected with L1One end, S2Drain electrode of (1), C1One end; c1The other end is connected with D1Cathode, C0One end, one end of the load resistor; s2Is connected to L2One end and C3One end; l is1The other end is connected with S1Drain electrode of (D)1Anode and C2One end; c2The other end is connected with D2Anode, D4A cathode; c3The other end is connected with D2Cathode, D3An anode; power supply VinNegative electrode connection S1Source electrode, L2Another terminal, diode D3Cathode and C4One end; c4The other end is connected with a diode D4Anode, C0The other end of the load resistor. On the basis of a traditional switch inductance converter, the converter overcomes the defects of large input current ripple and low voltage gain, and inhibits the voltage resonance problem of a switch tube commonly existing in the traditional switch inductance structure due to the introduction of a passive clamping circuit.

Description

High-gain zero-ripple passive clamping type Boost converter and control method thereof
Technical Field
The invention relates to the technical field of power electronic converters, in particular to a high-gain zero-ripple passive clamping type Boost converter and a control method thereof.
Background
With the continuous emergence of global energy and environmental problems, new energy power generation technologies, represented by photovoltaic and fuel cells, are receiving attention due to their characteristics of high efficiency, no pollution, reproducibility, no regional limitation, and the like. However, in a new energy power generation system, the output voltages of the photovoltaic cell panel and the fuel cell are low, generally about 20V-50V, and cannot be directly supplied to a power grid for power generation or a local load for power supply. In order to adapt the energy captured by the fuel cell, the solar photovoltaic cell panel and the like to grid-connected power generation or supply power to a local load, a high-gain DC-DC converter is needed to increase the lower output voltage of the high-gain DC-DC converter to a higher direct-current voltage above 200V, and then the high-gain DC-DC converter is used for grid-connected power generation or supply power to the load through an inverter. Under the application background, the research of the boost converter with reliability, high efficiency, small volume, large power density and high voltage gain has important practical significance.
In the application occasions of uninterruptible power supplies, new energy power generation and the like, the high-gain DC/DC converter is widely applied. The conventional switched inductor Boost converter mainly has the following problems: 1) the voltage gain is small and needs to be further improved; 2) the current ripple is large, and the service life of the fuel cell can be shortened when the current ripple is applied to a fuel cell system; 3) circuit element parameter inconsistency (i.e., inductance L)1、L2The parasitic capacitance of the switching tube is not equal or the parasitic capacitance of the switching tube is not equal) to cause voltage resonance of the switching tube and increase the voltage stress of the switching tube; 4) the input and output are not common to ground and cause serious electromagnetic interference.
To solve the above problems, many solutions exist. For example, patent application No. 201811529148.9 discloses a single-tube high-gain zero-ripple DC-DC converter, which includes a DC input power source, a first inductor L1A passive zero ripple circuit, a switch tube S and a third capacitor C3Voltage doubling unit and third diode D0A sixth capacitor C0And a load R. The passive zero ripple circuit comprises a second inductor L2A first capacitor C1A second capacitor C2And a first coupling inductor T1(ii) a The voltage doubling unit comprises a second coupling inductor T2A fourth capacitor C4A fifth capacitor C5A first diode D1And a second diode D2. The application has higher boosting capacity and can realize zero ripple of input current without the limitation of duty ratio.
Also, as disclosed in patent application No. 201810205858.X, a dual-switch DC-DC converter is disclosed, which includes a DC power supply, an inductor, a first switch tube module, a second switch tube module, a first diode, a second diode, a third diode, a fourth diode, a first capacitor, a second capacitor, and a third capacitor; the gain of the double-switch DC-DC converter is 2/(1-2D), high gain can be realized under a low duty ratio, and the conduction loss of the switch tube is reduced.
None of the above applications is missing from the good solutions for improving the performance of Boost converters, but there is still further room for the effect, especially the reduction of the voltage stress of the switching devices and diodes.
Disclosure of Invention
1. Technical problem to be solved by the invention
The invention provides a high-gain zero-ripple passive clamping type Boost converter and a control method thereof, aiming at the problems of low Boost ratio and large input current ripple of the traditional switched inductor Boost converter; the converter provided by the invention has the characteristics of zero input current ripple, low voltage stress of a switching device and a diode, high output voltage gain, capability of effectively inhibiting the voltage resonance problem of a switching tube by using an introduced passive clamping structure and the like, and is suitable for application occasions with high boost ratio and without electric isolation.
2. Technical scheme
In order to solve the problems, the technical scheme provided by the invention is as follows:
the invention discloses a high-gain zero-ripple passive clamping type Boost converter, which comprises a power switch tube S1、S2Diode D1、D2、D3And D4Inductance Lin、L1、L2And a capacitor C1、C2、C3、C4And C0。
Inductor LinOne end is connected with an input power supply VinThe positive electrode and the other end are respectively connected with an inductor L1One terminal, power switch tube S2Drain electrode of (1) and capacitor C1One end;
capacitor C1The other ends are respectively connected with a diode D1Cathode and node a;
power switch tube S2Are respectively connected with an inductor L2One terminal and a capacitor C3One end;
inductor L1The other ends are respectively connected with a power switch tube S1Drain electrode of (2), diode D1Anode and capacitor C2One end;
capacitor C2The other ends are respectively connected with a diode D2Anode, D4A cathode;
capacitor C3The other ends are respectively connected with a diode D2Cathode, D3An anode;
input power supply VinThe negative electrodes are respectively connected with a power switch tube S1Source electrode and inductor L2Another terminal, diode D3Cathode and capacitor C4One end;
capacitor C4The other ends are respectively connected with a diode D4An anode and a node b;
nodes a and b form the output.
Furthermore, a switch tube S1And a switching tube S2The duty ratio of an input signal of the grid electrode is 0-1, and the grid electrode is turned on and off simultaneously.
Further, the converter has a duty cycle of 0<d<1(d1＝d2D) the voltage gain is all:
Figure BDA0003431303250000021
furthermore, a switch tube S1、S2The voltage stress of (a) is:
Figure BDA0003431303250000022
diode D1～D4The voltage stress of (a) is:
Figure BDA0003431303250000023
Figure BDA0003431303250000024
the invention discloses a high-gain zero-ripple passive clamping common-ground type Boost converter, which comprises a power switch tube S1、S2Diode D1、D2、D3And D4Inductance Lin、L1、L2And a capacitor C1、C2、C3、C4And C0。
Inductor LinOne end is connected with an input power supply VinThe positive electrode and the other end are respectively connected with an inductor L1One terminal, diode D1Anode and power switch tube S2Drain electrode of (1) and capacitor C4One end;
capacitor C4The other ends are respectively connected with a diode D2Cathode and node a;
inductor L1The other ends are respectively connected with a power switch tube S1Drain electrode of (1) and capacitor C1One end;
capacitor C1The other ends are respectively connected with a diode D1Cathode, D4Anode and capacitor C2One end;
capacitor C2The other ends are respectively connected with a diode D2Anode, D3A cathode;
power switch tube S2Are respectively connected with an inductor L2One terminal and a capacitor C3One end;
capacitor C3The other ends are respectively connected with a diode D3Anode, D4A cathode;
input power supply VinThe negative electrodes are respectively connected with a power switch tube S1Source electrode and inductor L2The other end and a node b;
nodes a and b form the output.
Furthermore, a switch tube S1And a switching tube S2The duty ratio of an input signal of the grid electrode is 0-1, and the grid electrode is turned on and off simultaneously.
Further, the converter has a duty cycle of 0<d<1(d1＝d2D) the voltage gain is all:
Figure BDA0003431303250000031
furthermore, a switch tube S1、S2The voltage stress of (a) is:
Figure BDA0003431303250000032
diode D1～D4The voltage stress of (a) is:
Figure BDA0003431303250000033
Figure BDA0003431303250000034
3. advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
(1) the invention relates to a high-gain zero-ripple passive clamping type Boost converter, which utilizes an inductor LinCapacitor C1And a capacitor C0A zero ripple circuit structure is formed, the defect of large input current ripple is overcome, and the total output voltage gain is improved through a switched capacitor;
(2) compared with Boost converters with the same boosting capacity, the high-gain zero-ripple passive clamping type Boost converter introduces the passive clamping circuit, so that the voltage resonance problem of a switching tube commonly existing in the traditional switch inductor structure is suppressed; in addition, the voltage gain is further improved by adding the passive clamping circuit;
(3) the high-gain zero-ripple passive clamp type Boost converter works in a variation range (0< d <1) with the duty ratio of 0-1, and the voltage gain is kept consistent. The two switching tubes are simultaneously switched on and off, so that the control circuit is simpler to realize;
(4) according to the high-gain zero-ripple passive clamping type Boost converter, the voltage stress of the switching tube is very low, and the system efficiency can be improved by adopting a high-performance switching device with low voltage withstanding grade and low on-resistance;
(5) compared with other high-gain converters, the high-gain zero-ripple passive clamping type Boost converter has the advantages of simple circuit structure, simple control scheme, few power devices, high efficiency, low cost, small switching loss and the like.
(6) According to the high-gain zero-ripple passive clamping type Boost converter, due to the design of the input-output common-ground circuit structure, the problem of electromagnetic interference is effectively suppressed.
Drawings
Fig. 1 is a circuit structure diagram of a high-gain zero-ripple passive clamp type Boost converter according to embodiment 1 of the present invention;
fig. 2 is an equivalent circuit diagram of a Boost converter mode 1 according to embodiment 1 of the present invention;
fig. 3 is an equivalent circuit diagram of a Boost converter mode 2 according to embodiment 1 of the present invention;
fig. 4 is a diagram of main operating waveforms of the Boost converter according to embodiment 1 of the present invention;
fig. 5 is a circuit structure diagram of a high-gain zero-ripple passive-clamping common-ground type Boost converter according to embodiment 2 of the present invention;
fig. 6 is an equivalent circuit diagram of a Boost converter mode 1 according to embodiment 2 of the present invention;
fig. 7 is an equivalent circuit diagram of a Boost converter mode 2 according to embodiment 2 of the present invention;
fig. 8 is a waveform diagram of main operation of the Boost converter according to embodiment 2 of the present invention.
Detailed Description
For a further understanding of the present invention, reference will now be made in detail to the embodiments illustrated in the drawings.
Example 1
As shown in fig. 1, the inductor L of the high-gain zero-ripple passive clamp type Boost converter of this embodiment isin、L1、L2And a capacitor C1、C2、C3、C4And C0. Inductor LinOne end is connected with an input power supply VinThe positive electrode and the other end are respectively connected with an inductor L1One terminal, power switch tube S2Drain electrode of (1) and capacitor C1One end; capacitor C1The other ends are respectively connected with a diode D1Cathode and output capacitor C0One end and one end of a load resistor; power switch tube S2Are respectively connected with an inductor L2One terminal and a capacitor C3One end; inductor L1The other ends are respectively connected with a power switch tube S1Drain electrode of (2), diode D1Anode and capacitor C2One end; capacitor C2The other ends are respectively connected with a diode D2Anode, D4A cathode; capacitor C3The other ends are respectively connected with a diode D2Cathode, D3An anode; input power supply VinThe negative electrodes are respectively connected with a power switch tube S1Source electrode and inductor L2Another terminal, diode D3Cathode and capacitor C4One end; capacitor C4The other ends are respectively connected with a diode D4Anode and output capacitor C0The other end and the other end of the load resistor. The converter utilizes an inductor L on the basis of the traditional switch inductor converterin、C1And C0And a zero ripple structure is formed, and the defect of large input current ripple is overcome. And because of the introduction of the passive clamping circuit, the voltage resonance problem of the switching tube which generally exists in the traditional switch inductance structure is inhibited, and meanwhile, the voltage gain is further improved by the addition of the passive clamping circuit. The voltage stress of the switching tube in the embodiment is only 1/3 of the output voltage, and a high-performance switching device with low voltage withstanding grade and low on-resistance can be adopted, so that the system efficiency is improved.
Switch tube S in this embodiment1And a switching tube S2The duty ratio of the input signal of the gate is 0-1, and the two switching tubes are turned on and off simultaneously, so that the converter in the embodiment has 2 working modes in one switching period, as shown in fig. 2-3, and the main working waveforms are shown in fig. 4.
Mode 1[ t ]0-t1]
Control switch tube S1、S2Simultaneously conducted, input power supply VinThrough a switching tube S1、S2Respectively supply inductance L1、L2And a capacitor C3Charging, the current flowing through the inductor rises linearly. At this time, the diode D1And D2Is turned off by receiving a reverse voltage, diode D3And D4Conduction, the specific current flow path is shown in fig. 2. Capacitor C2Through a switching tube S1And a diode D4Capacitor C4And (6) charging. At the same time, the input power VinAnd a capacitor C1And C4To an output capacitor C0And a load R.
Mode 2[ t ]1-t2]
Control switch tube S1、S2Simultaneously turn off, diode D1、D2On, D3And D4The current is shut off by the back pressure, and the specific working current flow path is shown in fig. 3. Input power supply VinAnd an inductance L1、L2And a capacitor C3Through diode D2Capacitor C2And (6) charging. At the same time, the inductance L1Through diode D1Capacitor C1And (6) charging. And input power supply VinAnd a capacitor C1And C4Continuously supply to the output capacitor C0And a load R.
To simplify the analysis, losses were not counted and the effect of parasitic parameters were ignored in the following analysis.
When switching tube S1And S2When conducting at the same time:
Figure BDA0003431303250000051
UC2＝UC4 (2)
when switching tube S1And S2And when the switch is turned off at the same time:
Figure BDA0003431303250000052
Figure BDA0003431303250000053
the equation (4) can be simplified to obtain:
Figure BDA0003431303250000054
the method can be obtained according to the volt-second equilibrium law:
Figure BDA0003431303250000055
thereby obtaining a capacitor voltage C2：
Figure BDA0003431303250000056
From equations (5) and (7):
Figure BDA0003431303250000057
output voltage U0：
U0＝Uin+ULin+UC1+UC4 (9)
Substituting equations (2), (3), (7) and (8) into the above equation:
Figure BDA0003431303250000061
the gain of the output voltage is obtained as follows:
Figure BDA0003431303250000062
in the embodiment of the present invention, the high-gain zero-ripple passive clamp type Boost converter can derive the switching tube S1、S2Voltage stress of (2):
Figure BDA0003431303250000063
diode D1～D4The voltage stress of (a) is:
Figure BDA0003431303250000064
Figure BDA0003431303250000065
the voltage stress formula analysis can show that the voltage stress of each power device is lower, which is beneficial to selecting a low-power high-performance switch device.
Example 2
As shown in fig. 5, this embodiment provides a novel high-gain zero-ripple passive-clamping common-ground type Boost converter, inductor LinOne end is connected with an input power supply VinThe positive electrode and the other end are respectively connected with an inductor L1One terminal, diode D1Anode and power switch tube S2Drain electrode of (1) and capacitor C4One end; capacitor C4The other ends are respectively connected with a diode D2Cathode and output capacitor C0One end and one end of a load resistor R; inductor L1The other ends are respectively connected with a power switch tube S1Drain electrode of (1) and capacitor C1One end; capacitor C1The other ends are respectively connected with a diode D1Cathode, D4Anode and capacitor C2One end; capacitor C2The other ends are respectively connected with a diode D2Anode, D3A cathode; power switch tube S2Are respectively connected with an inductor L2One terminal and a capacitor C3One end; capacitor C3The other ends are respectively connected with a diode D3Anode, D4A cathode; input power supply VinThe negative electrodes are respectively connected with a power switch tube S1Source electrode and inductor L2The other end and an output capacitor C0The other end and the other end of the load resistor R.
The converter in the embodiment overcomes the defects of large input current ripple, low voltage gain and non-common input and output on the basis of the traditional switch inductance converter. Meanwhile, due to the introduction of the passive clamping circuit, the problem of voltage resonance of a switching tube commonly existing in a traditional switch inductor structure is solved, and the voltage gain is further improved. The voltage stress of the switching tube of the embodiment is very low, and a high-performance switching device with low voltage-withstanding grade and low on-resistance can be adopted, so that the system efficiency is improved.
Switch tube S in this embodiment1And a switching tube S2The duty ratio of the input signal of the grid electrode is 0-1, and the two switching tubesMeanwhile, the converter is turned on and off, so that the converter in this embodiment has 2 operating modes in one switching period, as shown in fig. 6 to 7, and the main operating waveforms are shown in fig. 8.
Mode 1[ t ]0-t1]
Control switch tube S1、S2Simultaneously conducted, input power supply VinThrough a switching tube S1、S2Respectively supply inductance L1、L2And a capacitor C1Charging, the current flowing through the inductor rises linearly. At this time, the diode D1、D3On, D2And D4The current path is shown in fig. 6, which is closed by the back pressure. Input power supply VinThrough a switching tube S1And S2And a capacitor C3Series capacitor C1And C2And (6) charging. At the same time, the input power VinAnd a capacitor C4Is connected in series to an output capacitor C0And a load R.
Mode 2[ t ]1-t2]
Control switch tube S1、S2Simultaneously turn off, diode D2、D4On, D1And D3The current is shut off by the back pressure, and the specific operating current flow path is shown in fig. 7. Input power supply VinAnd an inductance L1、L2And a capacitor C1Through diode D4Capacitor C3And (6) charging. At the same time, the inductance L1And a capacitor C1And C2Series capacitor C4And (6) charging. And input power supply VinAnd a capacitor C4Is connected in series to the output capacitor C continuously0And a load R.
To simplify the analysis, losses were not counted and the effect of parasitic parameters were ignored in the following analysis.
When switching tube S1And S2When conducting at the same time:
Figure BDA0003431303250000071
Figure BDA0003431303250000072
from the above formula, it can be seen that:
UC2＝UC3 (3)
when switching tube S1And S2When the switch is turned off at the same time, according to the KVL equation:
Figure BDA0003431303250000073
Figure BDA0003431303250000074
simplifying equation (5) yields:
Figure BDA0003431303250000075
the method can be obtained according to the volt-second equilibrium law:
Figure BDA0003431303250000076
thereby obtaining a capacitor voltage C3：
Figure BDA0003431303250000077
From equations (6) and (8):
Figure BDA0003431303250000078
the capacitance C can be obtained by the formula4Voltage:
Figure BDA0003431303250000081
output voltage U0：
U0＝Uin+UC4 (11)
Output voltage obtainable by equations (9) and (10):
Figure BDA0003431303250000082
the gain of the output voltage is obtained as follows:
Figure BDA0003431303250000083
switch tube S in this embodiment1、S2Voltage stress of (2):
Figure BDA0003431303250000084
diode D1～D4The voltage stress of (a) is:
Figure BDA0003431303250000085
Figure BDA0003431303250000086
the voltage stress formula analysis can show that the voltage stress of each power device is lower, which is beneficial to selecting a low-power high-performance switch device.
Compared with other high-gain converters, the Boost converter in the embodiment 1-2 has the advantages of simple circuit structure, simple control scheme, few power devices, high efficiency, low cost, low switching loss and the like, and is suitable for application occasions with high Boost ratio and without electric isolation.
The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.

Claims (8)

1. A high-gain zero-ripple passive clamping type Boost converter is characterized in that: comprising a power switch tube S1、S2Diode D1、D2、D3And D4Inductance Lin、L1、L2And a capacitor C0、C1、C2、C3And C4；
Inductor LinOne end is connected with an input power supply VinThe positive electrode and the other end are respectively connected with an inductor L1One terminal, power switch tube S2Drain electrode of (1) and capacitor C1One end;
capacitor C1The other ends are respectively connected with a diode D1Cathode and node a;
power switch tube S2Are respectively connected with an inductor L2One terminal and a capacitor C3One end;
inductor L1The other ends are respectively connected with a power switch tube S1Drain electrode of (2), diode D1Anode and capacitor C2One end;
capacitor C2The other ends are respectively connected with a diode D2Anode, D4A cathode;
capacitor C3The other ends are respectively connected with a diode D2Cathode, D3An anode;
input power supply VinThe negative electrodes are respectively connected with a power switch tube S1Source electrode and inductor L2Another terminal, diode D3Cathode and capacitor C4One end;
capacitor C4The other ends are respectively connected withDiode D4An anode and a node b;
nodes a and b form the output.
2. A high-gain zero-ripple passive clamping type Boost converter is characterized in that: comprising a power switch tube S1、S2Diode D1、D2、D3And D4Inductance Lin、L1、L2And a capacitor C0、C1、C2、C3And C4；
Inductor LinOne end is connected with an input power supply VinThe positive electrode and the other end are respectively connected with an inductor L1One terminal, diode D1Anode and power switch tube S2Drain electrode of (1) and capacitor C4One end;
capacitor C4The other ends are respectively connected with a diode D2Cathode and node a;
inductor L1The other ends are respectively connected with a power switch tube S1Drain electrode of (1) and capacitor C1One end;
capacitor C1The other ends are respectively connected with a diode D1Cathode, D4Anode and capacitor C2One end;
capacitor C2The other ends are respectively connected with a diode D2Anode, D3A cathode;
power switch tube S2Are respectively connected with an inductor L2One terminal and a capacitor C3One end;
capacitor C3The other ends are respectively connected with a diode D3Anode, D4A cathode;
input power supply VinThe negative electrodes are respectively connected with a power switch tube S1Source electrode and inductor L2The other end and a node b;
nodes a and b form the output.
3. A high-gain zero-ripple passive clamp type Boost converter according to claim 1 or 2, characterized in that: the switch tube S1And a switching tube S2Duty ratio of drive signal is 0<d<1, and a switching tube S1And a switching tube S2The device works in two states of simultaneous on and simultaneous off.
4. A high-gain zero-ripple passive clamp type Boost converter according to claim 1, characterized in that: in the whole change period of the duty ratio of the converter, the voltage gains are as follows:
Figure FDA0003431303240000021
5. a high-gain zero-ripple passive clamp type Boost converter according to claim 2, characterized in that: in the whole change period of the duty ratio of the converter, the voltage gains are as follows:
Figure FDA0003431303240000022
6. a high-gain zero-ripple passive clamp type Boost converter according to claim 3, characterized in that: the converter switches the transistor S during the whole variation period1、S2The voltage stress of (a) is:
Figure FDA0003431303240000023
diode D1～D4The voltage stress of (a) is:
Figure FDA0003431303240000024
Figure FDA0003431303240000025
7. a control method of a high-gain zero-ripple passive clamp type Boost converter according to claim 1, characterized in that:
at t ═ t0At any moment, the switch tube S is controlled1、S2Simultaneously conducted, input power supply VinThrough a switching tube S1、S2Respectively supply inductance L1、L2And a capacitor C3Charging, wherein the current flowing through the inductor rises linearly; diode D1And D2Is turned off by receiving a reverse voltage, diode D3And D4On, the capacitance C2Through a switching tube S1And a diode D4Capacitor C4Charging, input power supply VinAnd a capacitor C1、C4To an output capacitor C0And a load R;
at t ═ t1At any moment, the switch tube S is controlled1、S2Simultaneously turn off, diode D1、D2On, D3And D4Is turned off by receiving the back voltage, and the input power supply VinAnd an inductance L1、L2And a capacitor C3Through diode D2Capacitor C2Charging; at the same time, the inductance L1Through diode D1Capacitor C1Charging; and input power supply VinAnd a capacitor C1、C4Continuously supply to the output capacitor C0And a load R.
8. A control method of a high-gain zero-ripple passive clamp type Boost converter according to claim 2, characterized in that:
at t ═ t0At any moment, the switch tube S is controlled1、S2Simultaneously conducted, input power supply VinThrough a switching tube S1、S2Respectively supply inductance L1、L2And a capacitor C1Charging, wherein the current flowing through the inductor rises linearly; diode D1、D3On, D2And D4Shut down due to back pressure; input power supply VinThrough a switching tube S1And S2And a capacitor C3Series capacitor C1And C2Charging, input power supply VinAnd a capacitor C4Is connected in series to an output capacitor C0And a load R;
at t ═ t1At any moment, the switch tube S is controlled1、S2Simultaneously turn off, diode D2、D4On, D1And D3Is turned off by receiving the back voltage, and the input power supply VinAnd an inductance L1、L2And a capacitor C1Through diode D4Capacitor C3Charging; inductor L1And a capacitor C1And C2Series capacitor C4Charging; and input power supply VinAnd a capacitor C4Is connected in series to the output capacitor C continuously0And a load R.
CN202111599636.9A 2021-12-24 2021-12-24 High-gain zero-ripple passive clamping type Boost converter and control method thereof Withdrawn CN114244104A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116224057A (en) * 2023-05-08 2023-06-06 中国科学院深海科学与工程研究所 Switching tube switch performance test and loss analysis circuit and test method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116224057A (en) * 2023-05-08 2023-06-06 中国科学院深海科学与工程研究所 Switching tube switch performance test and loss analysis circuit and test method
CN116224057B (en) * 2023-05-08 2023-08-11 中国科学院深海科学与工程研究所 Switching tube switch performance test and loss analysis circuit and test method

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