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Single-inductor single-switch high-gain capacitor clamping-type DC boost converter

A technology of capacitor clamping and DC boosting, applied in the direction of conversion equipment without intermediate conversion to AC, can solve the problems of poor load adaptability, inability to achieve dynamic control of switched capacitor converters, limited application range, etc., and achieve low voltage stress. , small quantity, high gain effect

Active Publication Date: 2017-11-24
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the switched capacitor converter cannot realize dynamic control, has poor load adaptability, and has limited scope of application.

Method used

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  • Single-inductor single-switch high-gain capacitor clamping-type DC boost converter
  • Single-inductor single-switch high-gain capacitor clamping-type DC boost converter
  • Single-inductor single-switch high-gain capacitor clamping-type DC boost converter

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Embodiment Construction

[0052] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0053] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element refe...

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PUM

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Abstract

The invention provides a single-inductor single-switch high-gain capacitor clamping-type DC boost converter, which comprises a capacitor clamping circuit and a Boost circuit, wherein the capacitor clamping circuit is formed by an energy storage capacitor C1, a clamping capacitor C2, a diode D1 and a diode D2 in connection; the Boost circuit is formed by an inductor L, a switching tube S, a main diode Db, a main capacitor Co, an input source Vin and a load RL in connection; the input end of the capacitor clamping circuit is placed at two ends of the switching tube S of the Boost circuit, the clamping capacitor C2 in the capacitor clamping circuit is embedded to the negative end of the output load RL of the Boost circuit, and organic fusion between the capacitor clamping circuit and the Boost circuit is realized. The single-inductor single-switch high-gain capacitor clamping-type DC boost converter has the advantages of high gains, few inductors and switching tubes, and low voltage stress.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to a single-inductance single-switch high-gain capacitor-clamped DC boost converter. Background technique [0002] The power electronic conversion technology of photovoltaic power generation connected to large power grid and micro grid is a very critical technical link of new energy power generation. At present, the widely recognized and adopted photovoltaic grid-connected power generation system includes the front-stage DC converter and the rear-stage grid-connected inverter. . Generally, the output voltage of photovoltaic modules is low (20-50V). In order to obtain higher voltage to supply grid-connected inverters, DC micro-grids, high-voltage DC loads, etc., it is necessary to use a DC converter with high voltage gain. At the same time, as industrial applications put forward higher and higher requirements for the economic cost and power density of converters, the simpl...

Claims

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Application Information

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IPC IPC(8): H02M3/07
CPCH02M3/07
Inventor 李虹曾洋斌郑琼林孙湖郝瑞祥
Owner BEIJING JIAOTONG UNIV
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