Wide-gain zeta converter

A converter and power inductor technology, which is applied in the field of wide-gain zeta converters, can solve the problems of increasing the number of switching tubes, reducing system stability, and reducing efficiency, and achieves the effects of output voltage gain expansion, convenient control, and simple structure.

Active Publication Date: 2014-01-01
SOUTH CHINA UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above goals can be achieved by cascading, but it will bring the disadvantages of increasing the number of switch tubes, reducing system stability and efficiency.

Method used

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  • Wide-gain zeta converter

Examples

Experimental program
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Effect test

Embodiment

[0021] Such as figure 1 As shown, a wide-gain zeta converter mainly includes the input power supply V g , switch tube S, first power inductor L 1 , the second power inductor L 2 , the third power inductor L 3 , the first intermediate energy storage capacitor C 1 , the second intermediate energy storage capacitor C 2 , output capacitance C 3 , the first diode D 1 , the second diode D 2 , the third diode D 3 and load R.

[0022] The drain of the switching tube S is connected to the input power supply V g the positive connection of the

[0023] The source of the switching tube S is respectively connected to the first power inductor L 1 One end of the first diode D 1 The anode and the second intermediate energy storage capacitor C 2 one end of the connection;

[0024] The first diode D 1 The cathodes are respectively connected to the second diode D 2 The cathode and the second power inductor L 2 one end of the connection;

[0025] The second diode D 2 The anodes...

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Abstract

The invention provides a wide-gain zeta converter. The wide-gain zeta converter mainly comprises a switch tube, three power inductors, two middle energy-storage capacitors, an output capacitor and three diodes. In the working process of the wide-gain zeta converter, the inherent properties of an inductor-capacitor-diode network are utilized, when the switch tube is switched off, the second power inductor charges the first middle energy-storage capacitor, and the first power inductor discharges; when the switch tube is switched on, the first middle energy-storage capacitor and an input power supply charge the first power inductor simultaneously, therefore, output voltage is boosted, and the gain of output voltage of the converter is expanded by combining original characteristics of a traditional zeta converter.

Description

technical field [0001] The invention relates to the technical field of power electronic converters, in particular to a wide-gain zeta converter. Background technique [0002] With the development of life and industry, the requirements for power electronic converters are getting higher and higher, and the traditional zeta converters with both step-up and step-down functions are also used more and more. However, due to the limitation of its inherent characteristics, the traditional zeta converter has a small range of output voltage, and the output voltage usually can only change within the range of 0 to 9 times the input voltage. In occasions with special requirements on the output voltage, such as uninterruptible power supply systems and fuel cell systems with low-voltage input and high-voltage output, the traditional zeta converter becomes no longer applicable. In order to expand the applicable range of the traditional zeta converter, it is necessary to expand its output vo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/04H02M3/156
Inventor 张波张能黄子田丘东元肖文勋
Owner SOUTH CHINA UNIV OF TECH
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