A Common Ground Switched-Quasi-Z -Source Bidirectional DC-DC Converter with Wide-Voltage-Gain Range for EVs with Hybrid Energy Sources

Yun Zhang, Qiangqiang Liu, Jing Li, Mark Sumner

Research output: Journal PublicationArticlepeer-review

47 Citations (Scopus)
1 Downloads (Pure)

Abstract

A common ground switched-quasi-Z-source bidirectional dc-dc converter is proposed for electric vehicles with hybrid energy sources. The proposed converter is based on the traditional two-level quasi- Z-source bidirectional dc-dc converter, changing the position of the main power switch. It has the advantages of a wide-voltage-gain range, a lower voltage stress across the power switches, and an absolute common ground. The operating principle, the voltage and current stresses on the power switches, the comparisons with the other converters, the small signal analysis, and the controller design are presented in this paper. Finally, a 300 W prototype with Uhigh= 240V and Ulow= 40 ∼ 120 V is developed, and the experimental results validate the performance and the feasibility of the proposed converter.

Original languageEnglish
Article number8049380
Pages (from-to)5188-5200
Number of pages13
JournalIEEE Transactions on Industrial Electronics
Volume65
Issue number6
DOIs
Publication statusPublished - Jun 2018

Keywords

  • Bidirectional dcdc converter
  • common ground
  • electric vehicles (EVs)
  • hybrid energy sources
  • switched-quasi-Z-source
  • wide-voltage-gain range

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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