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A 1.2kW High-Efficiency Onboard Charger with Wide Input Voltage Range for Electric Forklifts

  • Zhibo Liang
  • , Fengjiang Wu
  • , Guangfu Hu
  • , Chengjing Yu*
  • *Corresponding author for this work
  • School of Electrical Engineering and Automation, Harbin Institute of Technology

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

Abstract

This paper addresses the complex operating conditions encountered by the onboard charger system in electric forklifts. A compact, high-efficiency two-stage topology featuring a wide input voltage range and low output current ripple is proposed. PWM and PFM are adopted for the two different stages, respectively. The operating principle of the proposed converter is analyzed, and the realization of soft-switching in the secondary stage is explained. A complete parameter design procedure for a 1.2kW OBC is presented. The correctness and feasibility of the proposed converter and its design methodology are validated through detailed experimental results. This work provides a practical and effective solution for the design of OBCs in electric forklift applications.

Original languageEnglish
Title of host publication2026 8th International Conference on Information Science, Electrical and Automation Engineering, ISEAE 2026
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages76-80
Number of pages5
ISBN (Electronic)9798331572129
DOIs
StatePublished - 2026
Externally publishedYes
Event8th International Conference on Information Science, Electrical and Automation Engineering, ISEAE 2026 - Daqing, China
Duration: 18 Apr 202620 Apr 2026

Publication series

Name2026 8th International Conference on Information Science, Electrical and Automation Engineering, ISEAE 2026

Conference

Conference8th International Conference on Information Science, Electrical and Automation Engineering, ISEAE 2026
Country/TerritoryChina
CityDaqing
Period18/04/2620/04/26

Keywords

  • dual closed-loop control Introduction
  • onboard charger
  • parameter design
  • two-stage topology

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