Synchronous Flyback Converter Coupled with Fuzzy Logic Control Efficiently Controls a Serially Connected VRLA Battery String

Authors

  • Charnyut Karnjanpiboon Department of Electrical Engineering Rajamangala University of Technology Lanna, Nan
  • Kammon Jirasereeamornkul Department of Electronic and Telecommunication Engineering, King Mongkut’s University of Technology Thonburi, Bangkok

Abstract

Abstract

This paper presents a high efficiency charge equalization system for balancing the energy in a serially connected, valveregulated, lead acid battery string using a synchronous flyback converter. Each flyback converter was coupled through a DC-link bus in order to increase the overall energy transfer efficiency of the system and to eliminate the problem of unbalanced charging of the batteries. To ensure that the charge equalization system operated smoothly and safely charged the batteries, a fuzzy logic controller was used in the control section of the system. The validity of this approach was confirmed by computer simulation and by experimentation. The efficiency of this synchronous flyback converter was 78.9 percent, better by approximately 1.07 percent than the conventional flyback converter.

Keywords : Battery management system, Charge equalization system, Bi-direction flyback, Synchronous flyback, Fuzzy logic.
(Selected from 1st Symposium on Hands-on Research and Development, Chiang Mai)

Downloads

Published

2012-11-05

Issue

Vol. 8 No. 1: January - April 2012

Section

บทความวิจัย (Research article)

License

ผลงานวิจัยและบทความวิชาการที่ปรากฏในวารสารนี้ เป็นความคิดเห็นอิสระของผู้เขียน ผู้เขียนจะต้องเป็นผู้รับผิดชอบต่อผลทางกฎหมายใด ๆ ที่อาจจะเกิดขึ้นจากบทความนั้น กองบรรณาธิการและคณะจัดทำวารสารฯไม่จำเป็นต้องเห็นด้วยเสมอไป