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A zero-voltage turn-off zero-current turn-on high-gain boost converter

A zero-voltage turn-off and converter technology, applied in high-efficiency power electronic conversion, conversion of DC power input to DC power output, adjustment of electrical variables, etc., to achieve the effect of eliminating turn-on losses, eliminating turn-off losses and reducing switching losses

Active Publication Date: 2022-05-06
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As the switching frequency increases, switching loss becomes the main loss mode of the circuit

Method used

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  • A zero-voltage turn-off zero-current turn-on high-gain boost converter
  • A zero-voltage turn-off zero-current turn-on high-gain boost converter
  • A zero-voltage turn-off zero-current turn-on high-gain boost converter

Examples

Experimental program
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Embodiment

[0103] Such as figure 2 As shown, take an example that contains three coat units:

[0104] A zero-voltage turn-off zero-current turn-on high-gain Boost converter includes a traditional Boost converter, three coat units and an auxiliary circuit. Wherein, the traditional Boost converter includes a main inductor L1, a power switch S1, a diode D1 and a capacitor C1. The first garment unit contains an inductor L11, two capacitors C11, C12 and a diode D11. The second garment unit comprises an inductor L21, two capacitors C21, C22 and a diode D21. The third garment unit comprises an inductor L31, two capacitors C31, C32 and a diode D31. The auxiliary circuit part includes a zero-current auxiliary inductor Lr, an auxiliary inductor Ls, a zero-voltage auxiliary capacitor Cr, an auxiliary capacitor Cs, and three diodes D2, D3, and D4. Its circuit connection relationship is:

[0105] One end of the inductor L1 of the traditional Boost converter is connected to the positive pole of ...

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Abstract

A zero-voltage turn-off zero-current turn-on high-gain Boost converter includes a main circuit and an auxiliary circuit; the main circuit includes a Boost converter and at least one garment unit. The Boost converter includes a main inductor L1, a power switch S1, a diode D1, and a capacitor C1. The auxiliary circuit includes a zero-current inductor Lr, an auxiliary inductor Ls, a zero-voltage capacitor Cr, an auxiliary capacitor Cs, and diodes D2, D3, and D4. The converter of the present invention realizes the zero-voltage turn-off and zero-current turn-on of the power switch tube, eliminates the switching loss on the power switch tube S1, and transfers the turn-on loss and turn-off loss on the power switch tube S1 to the main circuit behind In the process, the purpose of soft switching lossless is realized. Therefore, the switching frequency of the power switch tube S1 can be increased.

Description

technical field [0001] The invention relates to a DC-DC converter, in particular to a high-gain Boost converter with zero-voltage turn-off and zero-current turn-on. Background technique [0002] In the existing switching power supply technology, the Boost coat circuit achieves high voltage gain very well. However, with the development of power electronics technology, switching power supplies are developing in the direction of miniaturization. This requires smaller circuit devices and higher switching frequencies. As the switching frequency increases, switching loss becomes the main loss mode of the circuit. The most effective way to solve the switching loss is to use soft switching technology, and the passive and lossless soft switching circuit has the characteristics of simple structure, easy control and high reliability. Contents of the invention [0003] The present invention provides a zero-voltage turn-off zero-current turn-on high-gain Boost converter. The switchi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/158H02M1/08
CPCH02M3/1582H02M1/08Y02B70/10
Inventor 邾玢鑫赵孟浩黄悦华支树播杨楠李振华冉华军
Owner CHINA THREE GORGES UNIV
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