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A High-Gain DC-DC Converter Based on Dual-Coupled Inductors

A DC-DC, coupled inductance technology, applied in the conversion device for adjusting electrical variables, output power, converting DC power input to DC power output, etc. Effects of spikes, loss reduction, and voltage stress reduction

Active Publication Date: 2020-10-09
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a high-gain DC-DC converter based on dual coupled inductors, which solves the defect of insufficient boosting capability of single-stage switched capacitors, and absorbs the leakage inductance energy of the coupled inductors through the clamping circuit at the same time, avoiding The excessive voltage spike of the switching device reduces the voltage stress of the switching device and reduces the loss of the converter

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  • A High-Gain DC-DC Converter Based on Dual-Coupled Inductors
  • A High-Gain DC-DC Converter Based on Dual-Coupled Inductors
  • A High-Gain DC-DC Converter Based on Dual-Coupled Inductors

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Embodiment Construction

[0015] The technical solution of the present invention will be specifically described below in conjunction with the accompanying drawings.

[0016] The present invention provides a high-gain DC-DC converter based on dual coupled inductors, including a DC input power supply, a first coupled inductor, a second coupled inductor, a first switching tube, a second switching tube, a third switching tube, a A diode, a second diode, a third diode, a fourth diode, a fifth diode, a first inductor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a The fifth capacitor, the sixth capacitor, the seventh capacitor and the load; the positive pole of the DC input power supply is connected to one end of the second switching tube and one end of the primary winding of the first coupling inductor, and the negative pole of the DC input power supply is connected to the primary winding of the second coupling inductor One end of the first switching tube is connected to one...

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Abstract

The invention relates to a high-gain DC-DC converter based on double coupling inductors. Including DC input power supply, first coupling inductor, second coupling inductor, first switching tube, second switching tube, third switching tube, first diode, second diode, third diode, fourth A diode, a fifth diode, a first inductor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor, a seventh capacitor and a load. The dual-coupled inductor high-gain DC-DC converter of the present invention combines the coupled inductor ratio boost, LCD boost network, capacitor-diode boost network, etc., with the clamping circuit to achieve electrical isolation and high Boost ratio, low voltage stress and high conversion efficiency, etc., are very suitable for high boost ratio DC voltage conversion applications.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to a high-gain DC-DC converter based on double coupled inductors. Background technique [0002] In recent years, new energy represented by photovoltaic systems, uninterruptible power supplies, wind power and fuel cells has played an increasingly important role in the industrial field. However, due to the low DC output voltage level of a single fuel cell or photovoltaic cell, it cannot meet the voltage level requirements of the DC side of the grid-connected inverter for a 220V AC grid. Therefore, it is necessary to add a high gain at the front end of the DC bus side of the power generation system. DC-DC converters are used to increase the voltage level to ensure that the power generation system injects the generated electric energy into the distribution network. [0003] Traditional high-gain DC-DC converters realize various boost functions by adjusting the turns ratio of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/335H02M1/34
CPCH02M1/34H02M3/33569H02M1/344
Inventor 林国庆黄毅敏
Owner FUZHOU UNIV