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A kind of interleaved parallel zvzcs high boost dc/dc converter

A high boost and converter technology, applied in high-efficiency power electronic conversion, DC power input conversion to DC power output, instruments, etc., can solve the problems of large turn-on and turn-off losses of switching tubes, low working efficiency of converters, etc. Achieve the effects of reduced turn-on and turn-off losses, low cost, and simple topology

Active Publication Date: 2021-01-26
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem of the present invention is that all the switching tubes of the existing DC / DC converter are in the hard switching state, the working efficiency of the converter is low, and there is a problem that the switching tubes are turned on and off.

Method used

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  • A kind of interleaved parallel zvzcs high boost dc/dc converter
  • A kind of interleaved parallel zvzcs high boost dc/dc converter
  • A kind of interleaved parallel zvzcs high boost dc/dc converter

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Embodiment Construction

[0025] Such as figure 1 As shown, an interleaved parallel ZVZCS high boost DC / DC converter, including inductor L 1 ,inductance L 2 , switch tube S 1 , switch tube S 2 , a passive snubber circuit, a first voltage multiplication unit, a second voltage multiplication unit, the passive snubber circuit includes a diode D 1 , Diode D 2 , Diode D 3 , Diode D 4 , Diode D 5 , Diode D 6 ,capacitance C 1 ,capacitance C 2 ,inductance L S1 ,inductance L S2 , the first voltage multiplier unit consists of a diode D 7 , Diode D 8 ,capacitance C 1a ,capacitance C 1b , the second voltage multiplier unit consists of a diode D 9 , Diode D 10 ,capacitance C 2a ,capacitance C 2b .

[0026] inductance L 1 One end with DC power supply E The positive pole of the connection, the other end is respectively connected with the switch tube S 1 Drain, Diode D 1Anode connection.

[0027] inductance L 2 One end with DC power supply E The positive pole of the connection, ...

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Abstract

An Interleaved Parallel ZVZCS High Boost DC / DC Converter Including Inductor L 1 ,inductance L 2 , switch tube S 1 , switch tube S 2 , a passive snubber circuit, a first voltage multiplication unit, a second voltage multiplication unit, the passive snubber circuit includes a diode D 1 , Diode D 2 , Diode D 3 , Diode D 4 , Diode D 5 , Diode D 6 ,capacitance C 1 ,capacitance C 2 ,inductance L S1 ,inductance L S2 , the first voltage multiplier unit consists of a diode D 7 , Diode D 8 ,capacitance C 1a ,capacitance C 1b , the second voltage multiplier unit consists of a diode D 9 , Diode D 10 ,capacitance C 2a ,capacitance C 2b . In the present invention, by adding an auxiliary circuit, the switch tubes S1 and S2 realize soft switching, reduce the turn-on and turn-off losses, and improve the working efficiency of the converter; the auxiliary circuit does not contain active components, the topology structure is relatively simple, the cost is low, and no Affect the control strategy and performance of the original converter.

Description

technical field [0001] The invention belongs to the field of DC / DC converters, in particular to an interleaved parallel ZVZCS high boost DC / DC converter. Background technique [0002] Photovoltaic power generation has developed rapidly in recent years. Due to the low output voltage of photovoltaic cells, it is difficult to directly provide DC power that meets the voltage requirements for the inverter. High-gain DC / DC converters have been widely used in it. However, most existing converters of this type have not implemented soft switching, and there is a problem of large turn-on and turn-off losses of the switch tube. attached figure 2 Shown is a high-gain DC / DC converter based on the voltage gain unit. Compared with the traditional Boost converter, it has the advantages of high gain ratio and low voltage stress of semiconductor devices. But all the switching tubes in this converter are in the hard switching state, so the working efficiency of the converter is low. Conten...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/158H02M1/00
CPCH02M1/00H02M3/158H02M1/0058Y02B70/10
Inventor 邾玢鑫黄杨王辉杨楠佘小莉
Owner CHINA THREE GORGES UNIV