Single-input high-reliability Zeta DC-DC converter

A converter and reliability technology, applied in the direction of converting DC power input to DC power output, climate sustainability, high-efficiency power electronic conversion, etc. High output gain effect

Pending Publication Date: 2022-01-04
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of low reliability of th

Method used

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  • Single-input high-reliability Zeta DC-DC converter
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  • Single-input high-reliability Zeta DC-DC converter

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Embodiment Construction

[0054] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0055] Such as image 3 Shown is the circuit topology diagram when the number of expansion units of the present invention m=1, n=1:

[0056] A single-input high-reliability Zeta DC-DC converter, which includes a DC input source, a basic Zeta converter, an input unit, m positive expansion units, and n negative voltage expansion units; where :

[0057] The basic Zeta converter input unit consists of two inductors L 0 , L 0 ', two capacitors C 0 、C 0 ', a power switch S 0 , a diode D 0 ; Its connection form is as follows: power switch S 0 The drain is connected to the DC input source V g positive pole of the power switch S 0 The sources are respectively connected to the inductor L 0 One end of and the capacitor C 0 One end of the capacitor C 0 The other end of the inductor L is connected to the 0 'One end and the diode D 0 connected to the cathode...

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Abstract

The invention discloses a single-input high-reliability Zeta DC-DC converter. The converter comprises a DC input source, a basic Zeta converter, m forward expansion units and n backward voltage expansion units. Each of the forward expansion unit and the reverse expansion unit is composed of two inductors, two capacitors and a diode, and input and output gains of the converter can be adjusted by adjusting the number of the forward expansion units and the number of the reverse expansion units. The converter has the characteristics of simple control and drive circuit, wide input and output voltage regulation range and high reliability and when one switch tube of the expansion unit is damaged, other circuits can work normally. The circuit is quite suitable for application occasions where the change range of output input voltage and output voltage is large, two power supplies are needed to supply power at the same time, and the reliability requirement is high.quite.

Description

technical field [0001] The invention relates to a DC-DC converter, in particular to a single-input high-reliability Zeta DC-DC converter. Background technique [0002] In applications where the input and output voltages vary greatly, the input voltage may be higher than the output voltage, or lower than the output voltage. The common non-isolated buck-boost DC-DC converters that are applicable at this time include Buck-Boost, Cuk, Sepic and Zeta circuits. Theoretically, by adjusting the duty cycle D, the input and output gains of these converters can vary from zero to infinity, but due to the influence of components and circuit parasitic parameters, the boosting capability of these converters is greatly limited. At present, the input and output gain schemes of single-input DC-DC converters mostly use basic circuits and circuits, but the reliability is poor. Therefore, it is of great significance to study a single-input buck-boost DC / DC converter that can realize high-gain ...

Claims

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Application Information

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IPC IPC(8): H02M3/156H02M1/08H02M1/32H02M1/42
CPCH02M3/156H02M1/08H02M1/32H02M1/42Y02B70/10
Inventor 邾玢鑫郭浩刘佳欣
Owner CHINA THREE GORGES UNIV
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