Synchronous Rectifier Control Algorithm to Improve Efficiency of Full-Bridge Converter with Asymmetric PWM Control

Taeho Bang, Sunho Lee, Jung Wook Park

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper presents the novel switching control method for synchronous rectifier with the asymmetric pulse-width-modulation (APWM) controlled full-bridge converter. Differently from the phase-shift control, the diagonally-located switches in the input-side of full-bridge converter operate simultaneously with the APWM method. If it operates in continuous current mode (CCM), the synchronous rectifier can be easily controlled with the OR-gated signal control method, which is conventionally used as the driving technique for synchronous rectifier with the phase-shifted control. However, the current flowing through the body diode of switches in synchronous rectifier still exists. In addition, the OR-gated signal control method results in the huge increase of total loss in discontinuous current mode (DCM) because of reverse currents flowing through channels of rectifier-side switches. In this paper, the switching control signals for synchronous rectifier are analyzed in both CCM and DCM to minimize total switch loss. Also, their boundary condition is mathematically analyzed. In summary, the new switching controller for synchronous rectifier is proposed, and its performance is evaluated by the PSIM simulation.

Original languageEnglish
Title of host publication2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1528-1535
Number of pages8
ISBN (Electronic)9781479973118
DOIs
Publication statusPublished - 2018 Dec 3
Event10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018 - Portland, United States
Duration: 2018 Sep 232018 Sep 27

Publication series

Name2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018

Other

Other10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018
CountryUnited States
CityPortland
Period18/9/2318/9/27

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment
  • Control and Optimization
  • Computer Networks and Communications
  • Hardware and Architecture
  • Information Systems and Management

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  • Cite this

    Bang, T., Lee, S., & Park, J. W. (2018). Synchronous Rectifier Control Algorithm to Improve Efficiency of Full-Bridge Converter with Asymmetric PWM Control. In 2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018 (pp. 1528-1535). [8557436] (2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ECCE.2018.8557436