An automatic voltage equalization bipolar zeta DC-DC converter

An automatic voltage equalization and converter technology, which is applied to the conversion equipment using Cuk converters, the conversion of DC power input to DC power output, instruments, etc., to achieve the effect of high input and output gain and low voltage stress.

Active Publication Date: 2022-02-01
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the problem that the existing non-isolated high-gain DC-DC converters cannot simultaneously generate high-gain bipolar voltages

Method used

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  • An automatic voltage equalization bipolar zeta DC-DC converter
  • An automatic voltage equalization bipolar zeta DC-DC converter
  • An automatic voltage equalization bipolar zeta DC-DC converter

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Embodiment Construction

[0040] Such as figure 2 Shown is the circuit topology diagram when the number of expansion units of the present invention m=2, n=2:

[0041] An automatic voltage equalizing bipolar Zeta DC-DC converter, the converter includes a DC input source, two loads, a basic Zeta converter, 1 same polarity expansion unit, 2 reverse polarity voltage expansion units . in:

[0042] A basic Zeta converter consists of two inductors L, L P1 , two capacitors C P11 、C P12 , a power switch S 1 , a diode D P1 . Its connection form is as follows: power switch S 1 The drain is connected to the positive pole of the input power supply, and the source is connected to one end of the inductor L and the capacitor C P11 One end of the capacitor C P11 The other end of the inductor L P1 one end of the diode D P1 connected to the cathode, the inductor L P1 The other end of the capacitor C P12 One end of the inductor L is connected, the other end of the inductor L, the diode D P1 anode and capac...

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Abstract

An automatic voltage-balancing bipolar Zeta DC‑DC converter comprising a DC input source, a basic Zeta converter, m‑1 same polarity expansion unit, n A reverse polarity voltage extension unit. The expansion unit with the same polarity and opposite polarity is composed of an inductor, two capacitors and a diode. By adjusting the number of the expansion unit, the input and output gain of the converter and the voltage stress of the switching device can be adjusted. The proposed converter has the advantages of simple control and drive circuit, wide adjustment range of input and output voltages, and low voltage stress of switching devices.

Description

technical field [0001] The invention relates to a DC-DC converter, in particular to an automatic voltage equalizing bipolar 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, most of the schemes for improving the input and output gain of DC-DC converters are based on Boost circuits, so these circuits can only realize voltage output with the same polarity or opposite polarity as that of the power supply at the same tim...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/156H02M3/00
CPCH02M3/156H02M3/005
Inventor 邾玢鑫刘昱张耀李振华王灿
Owner CHINA THREE GORGES UNIV
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