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Dual-input high-reliability capacitor current consistent type Zeta DC-DC converter

A capacitive current and reliability technology, which is applied in the direction of high-efficiency power electronic conversion, conversion of DC power input to DC power output, and adjustment of electrical variables, can solve the problems of low reliability of high-gain DC-DC converters, and achieve input and output high 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

[0004] In order to solve the problem of low reliability of the existing non-isolated dual-input high-gain DC-DC converter

Method used

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  • Dual-input high-reliability capacitor current consistent type Zeta DC-DC converter
  • Dual-input high-reliability capacitor current consistent type Zeta DC-DC converter
  • Dual-input high-reliability capacitor current consistent type Zeta DC-DC converter

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Embodiment Construction

[0055] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0056] Such as image 3 Shown is the circuit topology diagram when the number of expansion units of the present invention m=1, n=1:

[0057] A dual-input high-reliability capacitive current consistent type Zeta DC-DC converter, the converter includes two DC input sources, a basic Zeta converter, an input unit, m positive expansion units, n negative Voltage extension unit; where:

[0058] A basic Zeta converter consists of two inductors L 1 , L 2 , two capacitors C 1 、C 2 , a power switch S 1 , a diode D 1 ; Its connection form is as follows: power switch S 1 The drain is connected to the DC input source u in1 positive pole of the power switch S 1 The sources are respectively connected to the inductor L 1 One end of and the capacitor C 1 One end of the capacitor C 1 The other end of the inductor L is connected to the 2 one end of the diode D 1 c...

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Abstract

The invention discloses a dual-input high-reliability capacitor current consistent type Zeta DC-DC converter. The converter comprises two DC input sources, a basic Zeta converter, an input unit, m forward expansion units and n backward voltage expansion units. Each of the forward expansion unit and the reverse expansion unit is composed of an inductor, two capacitors and a diode, and the input and output gain of the converter and the voltage stress of a switching device can be adjusted by adjusting the number of the forward expansion unit and the number of the reverse expansion unit. The converter has the characteristics of simple control and drive circuit, wide input and output voltage regulation range and high reliability; when one switching tube is damaged, other circuits can work normally; and 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.

Description

technical field [0001] The invention relates to a DC-DC converter, in particular to a double-input high-reliability capacitor current consistent type 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. [0003] At present, the input and output gain solutions of the dual-input DC-DC converter basically do not have high-gain output and have poor reliability. Therefore, it is of great significance to study a dual-input buck-boost DC...

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 邾玢鑫刘佳欣杨浴金
Owner CHINA THREE GORGES UNIV
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