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CN110417273B - Fault-tolerant operation of asymmetric half-bridge dual-output converter based on switch reconfiguration - Google Patents

Fault-tolerant operation of asymmetric half-bridge dual-output converter based on switch reconfiguration Download PDF

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CN110417273B
CN110417273B CN201910720151.7A CN201910720151A CN110417273B CN 110417273 B CN110417273 B CN 110417273B CN 201910720151 A CN201910720151 A CN 201910720151A CN 110417273 B CN110417273 B CN 110417273B
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transformer
output
switch tube
switch
diode
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CN110417273A (en
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陈桂鹏
卿新林
胡义华
李广地
王昆
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Xiamen University
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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
    • 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
    • H02M3/22—Conversion of DC power input into DC power output with intermediate conversion into AC
    • H02M3/24—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters
    • H02M3/28—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC
    • H02M3/325—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33569—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
    • 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
    • H02M1/0083—Converters characterised by their input or output configuration
    • H02M1/009—Converters characterised by their input or output configuration having two or more independently controlled outputs
    • 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

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  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

基于开关管重构的可容错运行不对称半桥双输出变换器，涉及不对称半桥直流变换器。针对现有的通过变换器冗余备份获得开关管故障后容错运行能力方案的不足，提供低成本、小体积的基于开关管重构的可容错运行不对称半桥双输出变换器。所述可容错运行不对称半桥双输出变换器的原边包括一个输入电压源、六个开关管、两个隔直电容和两个变压器的原边绕组。在全波整流结构中，副边包括变压器的两个副边绕组、四个二极管、两个电感、两个输出电容；在半波整流结构中，副边包括变压器的一个副边绕组、四个二极管、两个电感、两个输出电容、两路输出负载。仅需额外添加两个开关管即可实现任一原开关管发生开路故障后的容错运行，成本低、体积小。

Figure 201910720151

A fault-tolerant operating asymmetric half-bridge dual-output converter based on switch tube reconfiguration relates to an asymmetric half-bridge DC converter. Aiming at the insufficiency of the existing scheme of obtaining fault-tolerant operation capability after switch tube failure through redundant backup of the converter, a low-cost, small-volume asymmetric half-bridge dual-output converter based on switch tube reconstruction and capable of fault-tolerant operation is provided. The primary side of the fault-tolerant asymmetric half-bridge dual-output converter includes an input voltage source, six switching tubes, two DC blocking capacitors and two primary windings of the transformer. In the full-wave rectification structure, the secondary side includes two secondary windings of the transformer, four diodes, two inductors, and two output capacitors; in the half-wave rectification structure, the secondary side includes one secondary winding of the transformer, four Diodes, two inductors, two output capacitors, and two output loads. It only needs to add two additional switch tubes to realize the fault-tolerant operation after any original switch tube has an open-circuit fault, and the cost is low and the volume is small.

Figure 201910720151

Description

Fault-tolerant operation asymmetric half-bridge double-output converter based on switch tube reconstruction
Technical Field
The invention relates to an asymmetric half-bridge direct-current converter, in particular to a fault-tolerant operation asymmetric half-bridge dual-output converter based on switch tube reconstruction.
Background
The asymmetric half-bridge direct current converter has the advantages of simple structure, easy control, soft switching operation and the like, and is very suitable for auxiliary electrical systems of spacecrafts and airplanes (1J. -J.Shieh, "reading of the zero-voltage switching control for systematic half-bridge DC/DC forward converters," IEE Proc. -electric. Power application, vol.153, No.1, pp.23-30, Jan.2006.). Due to its inherent zero voltage soft switching characteristics, the switching transistors in an asymmetric half-bridge dc converter typically use metal-oxide semiconductor field effect transistors (MOSFETs) to increase the switching frequency as much as possible and thereby reduce the size of the passive components. However, MOSFET semiconductor devices are easily damaged in undesirable operating environments such as overvoltage and overcurrent, and in aerospace high-reliability application occasions, the power supply system is required to continue to work normally after the converter fails, that is, the system is required to have fault-tolerant operation capability. In theory, this fault-tolerant capability can be achieved by equipping each converter with a redundant converter, shutting down the faulty converter and starting up the backup converter when damage occurs to the switching device. However, as the voltage levels required in practical applications become more and more diverse, one input source often supplies power to multiple different output loads at the same time, and multiple corresponding asymmetric half-bridge dc converters are required to achieve voltage regulation and power control, which leads to higher system cost and volume if each converter is redundantly backed up.
Disclosure of Invention
The invention aims to provide a low-cost and small-volume fault-tolerant operation asymmetric half-bridge dual-output converter based on switching tube reconstruction, aiming at the defects of the existing scheme for obtaining fault-tolerant operation capability after switching tube failure through converter redundancy backup.
The invention adopts one of the technical schemes:
the fault-tolerant operation asymmetric half-bridge double-output converter based on the switch tube reconstruction is provided with an input voltage source VinSix switch tubes S1、S2、S3、S4、S5、S6Two blocking capacitors C1、C2Two three-winding transformers T1、T2Four diodes D1、D2、D3、D4Two inductors L1、L2Two output capacitors Co1、Co2And a two-way output load R1、R2；
On the primary side, input voltage source VinPositive terminal and blocking capacitor C1One end of (1), a switch tube S1OfPolar, switch tube S3Is connected with the drain electrode of the capacitor C1And the other end of the transformer T1Transformer T with primary winding connected to the same name terminal1Different name terminal and switch tube S of primary winding3Source electrode and switch tube S2Drain electrode of (1), and switching tube S5Is connected with the drain electrode of the switching tube S2Is connected to an input voltage source VinNegative terminal of (1), switching tube S5Source electrode and switch tube S6Is connected with the source electrode of the switching tube S6Drain electrode of and switch tube S1Source electrode and DC blocking capacitor C2One end of (1), a switch tube S4Is connected with the drain electrode of the capacitor C2And the other end of the transformer T2Transformer T with primary winding connected to the same name terminal2Different name terminal and switch tube S of primary winding4Is connected with an input voltage source VinA negative terminal of (a);
on the secondary side, a transformer T1Homonymous terminal of secondary side first winding and heteronymous terminal of second winding and inductor L1Is connected to one end of a transformer T1Synonym terminal of secondary side first winding and diode D1Is connected to the cathode of the transformer T1Homonymous terminal of secondary side second winding and diode D2Is connected to the cathode of a diode D1Anode of (2) and diode D2Is connected with an output capacitor Co1And an output load R1Negative terminal of, output capacitor Co1And an output load R1Positive terminal and inductor L1The other ends of the two are connected; transformer T2Homonymous terminal of secondary side first winding and heteronymous terminal of second winding and inductor L2Is connected to one end of a transformer T2Synonym terminal of secondary side first winding and diode D3Is connected to the cathode of the transformer T2Homonymous terminal of secondary side second winding and diode D4Is connected to the cathode of a diode D3Anode of (2) and diode D4Is connected with an output capacitor Co2And an output load R2Negative terminal of, output capacitor Co2And an output load R2Positive terminal and inductor L2And the other end of the two are connected.
The second technical scheme of the invention is as follows:
the fault-tolerant operation asymmetric half-bridge double-output converter based on the switch tube reconstruction is provided with an input voltage source VinSix switch tubes S1、S2、S3、S4、S5、S6Two blocking capacitors C1、C2Two double winding transformers T1、T2Four diodes D1、D2、D3、D4Two inductors L1、L2Two output capacitors Co1、Co2Two-way output load R1、R2；
On the primary side, input voltage source VinPositive terminal and blocking capacitor C1One end of (1), a switch tube S1Drain electrode of (1), and switching tube S3Is connected with the drain electrode of the capacitor C1And the other end of the transformer T1Transformer T with primary winding connected to the same name terminal1Different name terminal and switch tube S of primary winding3Source electrode and switch tube S2Drain electrode of (1), and switching tube S5Is connected with the drain electrode of the switching tube S2Is connected to an input voltage source VinNegative terminal of (1), switching tube S5Source electrode and switch tube S6Is connected with the source electrode of the switching tube S6Drain electrode of and switch tube S1Source electrode and DC blocking capacitor C2One end of (1), a switch tube S4Is connected with the drain electrode of the capacitor C2And the other end of the transformer T2Transformer T with primary winding connected to the same name terminal2Different name terminal and switch tube S of primary winding4Is connected with an input voltage source VinA negative terminal of (a);
on the secondary side, a transformer T1Homonymous terminal of secondary winding and diode D2Cathode and inductor L1Is connected to one end of a transformer T1Synonym terminal of secondary winding and diode D1Is connected to the cathode of a diode D1Anode of (2) and diode D2Is connected with an output capacitor Co1And an output load R1Negative terminal of, output capacitor Co1And an output load R1Positive terminal and inductor L1The other ends of the two are connected; transformer T2Homonymous terminal of secondary winding and diode D4Cathode and inductor L2Is connected to one end of a transformer T2Synonym terminal of secondary winding and diode D3Is connected to the cathode of a diode D3Anode of (2) and diode D4Is connected with an output capacitor Co2And an output load R2Negative terminal of, output capacitor Co2And an output load R2Positive terminal and inductor L2And the other end of the two are connected.
Compared with the traditional fault-tolerant scheme of redundancy backup, the fault-tolerant operation asymmetric half-bridge dual-output converter only needs to additionally add two switching tubes S5、S6I.e. can be in the original switch tube S1、S2、S3Or S4After any one of the three circuits has an open-circuit fault, the converter is ensured to continue to work normally through the reconstruction of the switch tube. The fault-tolerant operation scheme of the invention can realize the fault-tolerant operation of any original switching tube after the open-circuit fault occurs only by additionally adding two switching tubes, and has low cost and small volume.
Drawings
FIG. 1 is a diagram of an asymmetric half-bridge dual-output converter + full-wave rectification secondary side capable of fault-tolerant operation based on switching tube reconstruction according to the invention;
FIG. 2 is a diagram of an asymmetric half-bridge dual-output converter + half-wave rectification secondary side capable of fault-tolerant operation based on switching tube reconfiguration according to the invention;
FIG. 3 is a normal operating circuit diagram of the switching tube reconfiguration based fault-tolerant asymmetric half-bridge dual-output converter in FIG. 1;
FIG. 4 is a normal operating circuit diagram of the switching tube reconfiguration based fault-tolerant asymmetric half-bridge dual-output converter in FIG. 2;
FIG. 5 shows the switching tube S of the switching tube reconfiguration-based fault-tolerant operation asymmetric half-bridge dual-output converter in FIGS. 1 and 2 during normal operation1、S2、S3、S4Driving waveform diagrams of (1);
FIG. 6 is a diagram of the switching tube S of the asymmetric half-bridge dual-output converter capable of fault-tolerant operation based on switching tube reconstruction in FIG. 11Or S2A working circuit diagram after an open circuit fault occurs;
FIG. 7 is a diagram of the switching tube S of the asymmetric half-bridge dual-output converter capable of fault-tolerant operation based on switching tube reconfiguration in FIG. 21Or S2A working circuit diagram after an open circuit fault occurs;
FIG. 8 is a schematic diagram of a switching tube S of the switching tube reconfigurable based fault-tolerant asymmetric half-bridge dual-output converter in FIGS. 1 and 21、S2、S3Or S4Duty ratio d after open circuit fault1<d2Driving waveform diagram of the switching tube;
FIG. 9 is a schematic diagram of the switching tube S of the switching tube reconfigurable based fault-tolerant asymmetric half-bridge dual-output converter in FIG. 1 and FIG. 21、S2、S3Or S4Duty ratio d after open circuit fault1>d2Driving waveform diagram of the switching tube;
FIG. 10 is a diagram of the switching tube S of the asymmetric half-bridge dual-output converter based on switching tube reconfiguration in FIG. 13Or S4A working circuit diagram after an open circuit fault occurs;
FIG. 11 is a diagram of the switching tube S of the asymmetric half-bridge dual-output converter capable of fault-tolerant operation based on switching tube reconfiguration in FIG. 23Or S4And (4) working circuit diagram after open circuit fault.
Detailed Description
In order to describe the present invention more specifically, the following embodiments will describe two kinds of fault-tolerant operation asymmetric half-bridge dual-output converters based on switch tube reconfiguration and their related operating principles in detail with reference to the attached drawings.
Two kinds of switch tube reconstruction-based asymmetric half-bridge double-output converters capable of fault-tolerant operation have the same primary side structure and comprise an input voltage source VinSix switch tubes S1、S2、S3、S4、S5、S6Two blocking capacitors C1、C2And two transformers T1、T2The primary winding of (a); input voltage source VinPositive terminal and blocking capacitor C1One end of (1), a switch tube S1Drain electrode of (1), and switching tube S3Is connected with the drain electrode of the capacitor C1And the other end of the transformer T1Transformer T with primary winding connected to the same name terminal1Different name terminal and switch tube S of primary winding3Source electrode and switch tube S2Drain electrode of (1), and switching tube S5Is connected with the drain electrode of the switching tube S2Is connected to an input voltage source VinNegative terminal of (1), switching tube S5Source electrode and switch tube S6Is connected with the source electrode of the switching tube S6Drain electrode of and switch tube S1Source electrode and DC blocking capacitor C2One end of (1), a switch tube S4Is connected with the drain electrode of the capacitor C2And the other end of the transformer T2Transformer T with primary winding connected to the same name terminal2Different name terminal and switch tube S of primary winding4Is connected with an input voltage source VinThe negative terminal of (a).
The secondary side structures of two kinds of asymmetrical half-bridge dual-output converters capable of fault-tolerant operation based on switch tube reconstruction are different and are respectively full-wave rectification (figure 1) and half-wave rectification (figure 2).
The secondary side of the full-wave rectifier (fig. 1) comprises a transformer T1、T2Two secondary windings of, four diodes D1、D2、D3、D4Two inductors L1、L2Two output capacitors Co1、Co2Two-way output load R1、R2(ii) a Transformer T1Homonymous terminal of secondary side first winding and heteronymous terminal of second winding and inductor L1Is connected to one end of a transformer T1Synonym terminal of secondary side first winding and diode D1Is connected to the cathode of the transformer T1Homonymous terminal of secondary side second winding and diode D2Is connected to the cathode of a diode D1Anode of (2) and diode D2Is connected with an output capacitor Co1And an output load R1Negative terminal of, output capacitor Co1Positive terminal and output load ofR1Positive terminal and inductor L1The other ends of the two are connected; transformer T2Homonymous terminal of secondary side first winding and heteronymous terminal of second winding and inductor L2Is connected to one end of a transformer T2Synonym terminal of secondary side first winding and diode D3Is connected to the cathode of the transformer T2Homonymous terminal of secondary side second winding and diode D4Is connected to the cathode of a diode D3Anode of (2) and diode D4Is connected with an output capacitor Co2And an output load R2Negative terminal of, output capacitor Co2And an output load R2Positive terminal and inductor L2And the other end of the two are connected.
The half-wave rectification secondary side (fig. 2) comprises a transformer T1、T2One secondary winding of four diodes D1、D2、D3、D4Two inductors L1、L2Two output capacitors Co1、Co2Two-way output load R1、R2(ii) a Transformer T1Homonymous terminal of secondary winding and diode D2Cathode and inductor L1Is connected to one end of a transformer T1Synonym terminal of secondary winding and diode D1Is connected to the cathode of a diode D1Anode of (2) and diode D2Is connected with an output capacitor Co1And an output load R1Negative terminal of, output capacitor Co1And an output load R1Positive terminal and inductor L1The other ends of the two are connected; transformer T2Homonymous terminal of secondary winding and diode D4Cathode and inductor L2Is connected to one end of a transformer T2Synonym terminal of secondary winding and diode D3Is connected to the cathode of a diode D3Anode of (2) and diode D4Is connected with an output capacitor Co2And an output load R2Negative terminal of, output capacitor Co2And an output load R2Positive terminal and inductor L2And the other end of the two are connected.
The two kinds of fault-tolerant operation asymmetric half-bridge dual outputs based on switch tube reconstructionThe converter operates on a similar principle, switching the transistor S under normal operating conditions1、S4Complementary conducting, switching tube S2、S3Complementary conducting, switching tube S5、S6Is always turned off. Their operating circuits are shown in fig. 3 and 4, respectively. Suppose a switch tube S1、S4Respectively is d1、1-d1Switching tube S2、S3Respectively is d2、1-d2As shown in fig. 5, the two output voltages of the converter of fig. 1 under normal operation are respectively Vo1＝(n11+n21)×d1×(1-d1)×VinAnd Vo2＝(n12+n22)×d2×(1-d2)×VinWherein n is11、n21Respectively, a transformer T in FIG. 11Of the two secondary windings to the primary winding, n12、n22Respectively, a transformer T in FIG. 12The turn ratio of the two secondary windings to the primary winding. Similarly, the two output voltages of the converter in fig. 2 under normal operation are respectively Vo1＝n1×d1×(1-d1)×VinAnd Vo2＝n2×d2×(1-d2)×VinWherein n is1、n2Respectively, the transformer T in FIG. 21And T2The turn ratio of the secondary winding to the primary winding.
According to the specific fault condition of the switch tube, the two fault-tolerant operation asymmetric half-bridge dual-output converters based on switch tube reconstruction have two different working modes after the fault:
1) mode 1, switching tube S1Or S2Open circuit failure. At the switch tube S1Or S2After an open-circuit fault occurs, the switching tube S should be turned off at once1And S2And switch the tube S6Set to a always-on state, the original converter will be reconfigured to be the switch tube S3、S4And S5The new converters connected in series, as shown in fig. 6 and 7. In this mode, by controlling the switching tube S3、S4And S5Can continue to operate and maintain the output voltage Vo1And Vo2And is not changed. In particular, when the duty ratio d1<d2At first, the switch tube S is switched on and off3Is set to 1-d1Switch tube S4Is set to d2Switch tube S5Is set to 1+ d1-d2And only two switching tubes are ensured to be in a conducting state at any time, as shown in fig. 8; on the contrary, when the duty ratio d1>d2At first, the switch tube S is switched on and off3Is set to d1Switch tube S4Is set to 1-d2Switch tube S5Is set to 1-d1+d2And ensures that only two switching tubes are in a conducting state at any time, as shown in fig. 9.
2) Mode 2, switching tube S3Or S4Open circuit failure. At the switch tube S3Or S4After an open-circuit fault occurs, the switching tube S should be turned off at once3And S4And switch the tube S5Set to a always-on state, the original converter will be reconfigured to be the switch tube S1、S2And S6The new converters connected in series, as shown in fig. 10 and 11. In this mode, by controlling the switching tube S1、S2And S6Can continue to operate and maintain the output voltage Vo1And Vo2And is not changed. In particular, when the duty ratio d1<d2At first, the switch tube S is switched on and off2Is set to 1-d1Switch tube S1Is set to d2Switch tube S6Is set to 1+ d1-d2And only two switching tubes are ensured to be in a conducting state at any time, as shown in fig. 8; on the contrary, when the duty ratio d1>d2At first, the switch tube S is switched on and off2Is set to d1Switch tube S1Is set to 1-d2Switch tube S6Is set to 1-d1+d2And ensures that only two switch tubes are in conduction state at any time, as shown in FIG. 9Shown in the figure.
In summary, when the fault-tolerant operation asymmetric half-bridge dual-output converter based on the switch tube reconstruction works normally, the switch tube S5、S6Is always turned off, the converter works as the traditional asymmetric half-bridge converter, and the switching tube S is adjusted1、S2、S3、S4The duty cycle of which controls the two output voltages. When switching tube S1、S2、S3、S4After an open-circuit fault occurs in one of the switching tubes, the switching tube S is passed5、S6And reconstructing and redistributing the driving signals of the switching tubes, namely keeping the output voltage unchanged. The fault-tolerant operation scheme of the invention can realize the fault-tolerant operation of any original switching tube after the open-circuit fault occurs only by additionally adding two switching tubes, and has low cost and small volume.

Claims (2)

1.基于开关管重构的可容错运行不对称半桥双输出变换器，其特征在于包括一个输入电压源Vin，六个开关管S1、S2、S3、S4、S5、S6，两个隔直电容C1、C2，两个三绕组变压器T1、T2，四个二极管D1、D2、D3、D4，两个电感L1、L2，两个输出电容Co1、Co2，两路输出负载R1、R2；在原边，输入电压源Vin的正端与隔直电容C1的一端、开关管S1的漏极、开关管S3的漏极相连，隔直电容C1的另一端与变压器T1原边绕组的同名端相连，变压器T1原边绕组的异名端与开关管S3的源极、开关管S2的漏极、开关管S5的漏极相连，开关管S2的源极连接于输入电压源Vin的负端，开关管S5的源极与开关管S6的源极相连，开关管S6的漏极与开关管S1的源极、隔直电容C2的一端、开关管S4的漏极相连，隔直电容C2的另一端与变压器T2原边绕组的同名端相连，变压器T2原边绕组的异名端与开关管S4的源极相连于输入电压源Vin的负端；在副边，变压器T1副边第一绕组的同名端和第二绕组的异名端与电感L1的一端相连，变压器T1副边第一绕组的异名端与二极管D1的阴极相连，变压器T1副边第二绕组的同名端与二极管D2的阴极相连，二极管D1的阳极与二极管D2的阳极相连于输出电容Co1的负端和输出负载R1的负端，输出电容Co1的正端和输出负载R1的正端与电感L1的另一端相连；在副边，变压器T2副边第一绕组的同名端和第二绕组的异名端与电感L2的一端相连，变压器T2副边第一绕组的异名端与二极管D3的阴极相连，变压器T2副边第二绕组的同名端与二极管D4的阴极相连，二极管D3的阳极与二极管D4的阳极相连于输出电容Co2的负端和输出负载R2的负端，输出电容Co2的正端和输出负载R2的正端与电感L2的另一端相连。1. An asymmetric half-bridge dual-output converter with fault-tolerant operation based on switch tube reconstruction is characterized in that it includes an input voltage source V in , six switch tubes S 1 , S 2 , S 3 , S 4 , S 5 , S 6 , two DC blocking capacitors C 1 , C 2 , two three-winding transformers T 1 , T 2 , four diodes D 1 , D 2 , D 3 , D 4 , two inductors L 1 , L 2 , two output capacitors C o1 , C o2 , two output loads R 1 , R 2 ; on the primary side, the positive end of the input voltage source V in and one end of the DC blocking capacitor C 1 , the drain of the switch tube S 1 , and the switch tube S The drain of 3 is connected, the other end of the DC blocking capacitor C1 is connected to the same name end of the primary winding of the transformer T1, and the different name end of the primary winding of the transformer T1 is connected to the source of the switch tube S3 and the source of the switch tube S2 . The drain is connected to the drain of the switch S5 , the source of the switch S2 is connected to the negative end of the input voltage source V in , the source of the switch S5 is connected to the source of the switch S6 , and the switch S The drain of 6 is connected to the source of the switch tube S1, one end of the DC blocking capacitor C2 , and the drain of the switch tube S4, and the other end of the DC blocking capacitor C2 is connected to the same name terminal of the primary winding of the transformer T2 , The synonymous end of the primary winding of the transformer T2 and the source of the switch tube S4 are connected to the negative end of the input voltage source V in ; on the secondary side, the synonymous end of the first winding on the secondary side of the transformer T1 and the different end of the second winding of the transformer T1 are connected. The name end is connected to one end of the inductor L 1 , the synonym end of the first winding of the secondary side of the transformer T 1 is connected to the cathode of the diode D 1 , the same name end of the second winding of the secondary side of the transformer T 1 is connected to the cathode of the diode D 2 , and the diode The anode of D 1 and the anode of diode D 2 are connected to the negative end of output capacitor C o1 and the negative end of output load R 1 , the positive end of output capacitor C o1 and the positive end of output load R 1 and the other end of inductor L 1 On the secondary side, the same - named end of the first winding of the secondary side of the transformer T2 and the synonymous end of the second winding of the transformer T2 are connected to one end of the inductor L2, and the synonymous end of the first winding of the secondary side of the transformer T2 is connected to the end of the diode D3 . The cathode is connected, the same name terminal of the secondary winding of transformer T2 is connected to the cathode of diode D4 , the anode of diode D3 is connected to the anode of diode D4 to the negative terminal of output capacitor C o2 and the negative terminal of output load R2 , the positive end of the output capacitor C o2 and the positive end of the output load R 2 are connected to the other end of the inductor L 2 . 2.基于开关管重构的可容错运行不对称半桥双输出变换器，其特征在于包括一个输入电压源Vin，六个开关管S1、S2、S3、S4、S5、S6，两个隔直电容C1、C2，两个双绕组变压器T1、T2，四个二极管D1、D2、D3、D4，两个电感L1、L2，两个输出电容Co1、Co2，两路输出负载R1、R2；在原边，输入电压源Vin的正端与隔直电容C1的一端、开关管S1的漏极、开关管S3的漏极相连，隔直电容C1的另一端与变压器T1原边绕组的同名端相连，变压器T1原边绕组的异名端与开关管S3的源极、开关管S2的漏极、开关管S5的漏极相连，开关管S2的源极连接于输入电压源Vin的负端，开关管S5的源极与开关管S6的源极相连，开关管S6的漏极与开关管S1的源极、隔直电容C2的一端、开关管S4的漏极相连，隔直电容C2的另一端与变压器T2原边绕组的同名端相连，变压器T2原边绕组的异名端与开关管S4的源极相连于输入电压源Vin的负端；在副边，变压器T1副边绕组的同名端、二极管D2的阴极与电感L1的一端相连，变压器T1副边绕组的异名端与二极管D1的阴极相连，二极管D1的阳极与二极管D2的阳极相连于输出电容Co1的负端和输出负载R1的负端，输出电容Co1的正端和输出负载R1的正端与电感L1的另一端相连；在副边，变压器T2副边绕组的同名端、二极管D4的阴极与电感L2的一端相连，变压器T2副边绕组的异名端与二极管D3的阴极相连，二极管D3的阳极与二极管D4的阳极相连于输出电容Co2的负端和输出负载R2的负端，输出电容Co2的正端和输出负载R2的正端与电感L2的另一端相连。2. The fault-tolerant operation asymmetric half-bridge dual-output converter based on switch tube reconfiguration is characterized in that it includes an input voltage source V in , six switch tubes S 1 , S 2 , S 3 , S 4 , S 5 , S 6 , two DC blocking capacitors C 1 , C 2 , two double-winding transformers T 1 , T 2 , four diodes D 1 , D 2 , D 3 , D 4 , two inductors L 1 , L 2 , two output capacitors C o1 , C o2 , two output loads R 1 , R 2 ; on the primary side, the positive end of the input voltage source V in and one end of the DC blocking capacitor C 1 , the drain of the switch tube S 1 , and the switch tube S The drain of 3 is connected, the other end of the DC blocking capacitor C1 is connected to the same name end of the primary winding of the transformer T1, and the different name end of the primary winding of the transformer T1 is connected to the source of the switch tube S3 and the source of the switch tube S2 . The drain is connected to the drain of the switch S5 , the source of the switch S2 is connected to the negative end of the input voltage source V in , the source of the switch S5 is connected to the source of the switch S6 , and the switch S The drain of 6 is connected to the source of the switch tube S1, one end of the DC blocking capacitor C2 , and the drain of the switch tube S4, and the other end of the DC blocking capacitor C2 is connected to the same name terminal of the primary winding of the transformer T2 , The synonymous end of the primary winding of the transformer T2 and the source of the switch S4 are connected to the negative end of the input voltage source V in ; on the secondary side, the synonymous end of the secondary winding of the transformer T1, the cathode of the diode D2 and the inductance One end of L 1 is connected, the other end of the secondary winding of transformer T 1 is connected to the cathode of diode D 1 , the anode of diode D 1 and the anode of diode D 2 are connected to the negative end of output capacitor C o1 and the output load R 1 The negative end, the positive end of the output capacitor C o1 and the positive end of the output load R 1 are connected to the other end of the inductor L 1 ; on the secondary side, the same-named end of the secondary winding of the transformer T 2 , the cathode of the diode D 4 and the inductor L 2 One end of the transformer T2 is connected to the other end of the secondary winding of the transformer T2 is connected to the cathode of the diode D3 , and the anode of the diode D3 is connected to the anode of the diode D4 to the negative end of the output capacitor C o2 and the negative end of the output load R2 , the positive end of the output capacitor C o2 and the positive end of the output load R 2 are connected to the other end of the inductor L 2 .
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