Accurate ZVS Analysis for Magnetic Design and Efficiency Improvement of Full-Bridge LLC Resonant Converter
- 30 August 2016
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Power Electronics
- Vol. 32 (3), 1703-1706
- https://doi.org/10.1109/tpel.2016.2604118
Abstract
This letter proposes a comprehensive zero-voltage switching analysis (ZVSA) to illustrate the commutation mechanism of full-bridge (FB) mosfet s in resonant converters. Inherent contradiction between two conventional ZVSA techniques is discussed with specific consideration of a full-bridge LLC (FBLLC) resonant converter. An analytical approach is proposed to determine the accurate zero-voltage switching (ZVS) criterion for both zero- and finite-phase overlap operations of an FB network. Impact of the proposed ZVSA on power losses of FBLLC is explained analytically. Experimental results are presented not only to validate the proposed ZVSA, but also to validate its effect on FBLLC. Low load efficiency is improved by 6% with the proposed approach.Keywords
Funding Information
- Department of Science and Technology, Government of India (DST/RCUK/SEGES/2012/14)
This publication has 12 references indexed in Scilit:
- A systematic approach of resonant tank design for LLC converters implemented in solar photovoltaic energy storage systemsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2015
- Asymmetrical Duty Cycle Controlled Full-Bridge LLC Resonant Converter with Equivalent Switching Frequency DoublerIEEE Transactions on Power Electronics, 2015
- Gain-Relationship-Based Automatic Resonant Frequency Tracking in Parallel $LLC$ ConverterIEEE Transactions on Industrial Electronics, 2015
- GaN Devices in Resonant LLC Converters: System-level considerationsIEEE Power Electronics Magazine, 2015
- LLC resonant converter design and developmentPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2014
- LLC resonant DC-DC converter for high voltage applicationsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2014
- Automatic Resonant Frequency Tracking in Parallel LLC Boost DC–DC ConverterIEEE Transactions on Power Electronics, 2014
- Design and Analysis of a Full-Bridge LLC-Based PEV Charger Optimized for Wide Battery Voltage RangeIEEE Transactions on Vehicular Technology, 2013
- Design Methodology of Bidirectional CLLC Resonant Converter for High-Frequency Isolation of DC Distribution SystemsIEEE Transactions on Power Electronics, 2012
- New Physical Insights on Power MOSFET Switching LossesIEEE Transactions on Power Electronics, 2009