Isolated high step-up DC-DC converter with zero-voltage-switching

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A high step-up DC-DC converter is proposed in this paper. The proposed converter has two transformers. The primary sides of them are paralleled virtually and the secondary sides have series connection to increase the voltage gain. An active clamp circuit is employed to suppress the switch voltage stresses and obtain zero-voltage-switching (ZVS) operation of the switches. Voltage doubler is selected as an output rectifier to increase the voltage gain and confine the voltage across the output diodes to the output voltage. Since the output diode currents are controlled by the total leakage inductance of the transformers, the reverse-recovery problem of the output diodes is significantly alleviated. Due to the ZVS operation and the alleviated reverse-recovery problem, the switching losses of the proposed converter are significantly reduced and the efficiency is improved. Steady-state analysis is performed. Experimental results based on a prototype are also provided to verify the effectiveness and feasibility of the proposed converter.

Original languageEnglish
Title of host publicationMachinery Electronics and Control Engineering II
Pages333-336
Number of pages4
DOIs
StatePublished - 2013
Event2012 2nd International Conference on Machinery Electronics and Control Engineering, ICMECE 2012 - Jinan, Shandong, China
Duration: 29 Dec 201230 Dec 2012

Publication series

NameApplied Mechanics and Materials
Volume313-314
ISSN (Print)1660-9336
ISSN (Electronic)1662-7482

Conference

Conference2012 2nd International Conference on Machinery Electronics and Control Engineering, ICMECE 2012
Country/TerritoryChina
CityJinan, Shandong
Period29/12/1230/12/12

Keywords

  • DC-DC converter
  • High step-up
  • Zero-current-switching
  • Zero-voltage-switching

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