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Novel wide-gain secondary buck converter

A secondary type, converter technology, applied in the direction of conversion equipment without intermediate conversion to AC, DC power input conversion to DC power output, output power conversion devices, etc., can solve the problem that the voltage gain of the step-down converter has a small range , unable to meet the needs of practical applications, etc., to achieve the effect of convenient control, simple structure, and voltage gain expansion

Pending Publication Date: 2020-03-13
SHANGHAI SHENCHUAN ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The voltage gain of traditional buck converters has a small variation range, and usually the output voltage can only be 0.1-0.9 times the input voltage, which cannot meet the needs of practical applications in many cases.

Method used

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  • Novel wide-gain secondary buck converter

Examples

Experimental program
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Effect test

Embodiment

[0023] Embodiment: The novel wide-gain secondary buck converter in this embodiment utilizes the inherent characteristics of the inductor-diode and inductor-diode networks to realize the expansion of the voltage gain of the buck converter.

[0024] like figure 1 As shown, the novel wide-gain quadratic buck converter in this embodiment includes an input power supply V g , the power switch tube S, the first power inductor L 1 , the second power inductor L 2 , the third power inductor L 3 , the first intermediate storage capacitor C 1 , the second intermediate storage capacitor C 2 , the output capacitance C 3 , the first diode D 1 , the second diode D 2 , the third diode D 3 , the fourth diode D 4 , the fifth diode D 5 , the sixth diode D 6 , the seventh diode D 7 , load R.

[0025] where the input supply V g The anodes of the first diode D are respectively connected to the 1 The cathode, the first power inductor L 1 one end of the connection;

[0026] The first ...

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Abstract

The invention relates to the technical field of power electronic converters and electric energy conversion, in particular to a novel wide-gain secondary buck converter which comprises a power switch tube, three power inductors, two middle energy storage capacitors, an output capacitor and seven diodes. Intrinsic characteristics of an inductor-diode network and an inductor-diode network are utilized. When the power switch tube is turned on, the three power inductors are connected in series and store energy, the two middle energy storage capacitors are connected in parallel and release energy tothe outside at the same time, and when the power switch tube is turned off, the three power inductors independently release energy to the two middle energy storage capacitors and a load, and voltagegain expansion of the buck converter is achieved. The invention has the advantages that the gain of the buck converter can be changed within the range of 0.003-0.669, that is to say, the minimum output voltage can reach 0.003 time of the input voltage, and the gain range of a traditional buck converter is greatly expanded; an extra power switch tube is not needed, the structure is simple, and control is convenient.

Description

technical field [0001] The invention relates to the technical field of power electronic converters and electric energy conversion, in particular to a novel wide-gain secondary buck converter. Background technique [0002] The range of voltage gain of the traditional buck converter is small, and the output voltage is usually only 0.1-0.9 times the input voltage, which cannot meet the needs of practical applications in many cases. Contents of the invention [0003] The purpose of the present invention is to provide a novel wide-gain secondary step-down converter according to the deficiencies of the above-mentioned prior art, utilizing the inherent characteristics of the inductor-diode and inductor-diode networks, through the on-off state of the power switch tube Switching realizes the expansion of the gain of the buck converter. [0004] The object of the present invention is realized by the following technical solutions: [0005] A novel wide-gain secondary buck converter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/07
CPCH02M3/07H02M3/072
Inventor 郑昌陆张能郑益飞
Owner SHANGHAI SHENCHUAN ELECTRIC CO LTD
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