Title

Efficiency-Oriented Optimal Design Of The Llc Resonant Converter Based On Peak Gain Placement

Keywords

Converter design; dc-dc power conversion; optimization; resonant converter

Abstract

The LLC resonant converter topology is widely used in dc-dc converter applications due to its advantages in achieving high efficiency and high power density. However, due to the complexity in the analysis, the converter lacks a clear design guideline on the selection of resonant tank parameters. In this paper, an optimization method is developed based on the operation mode analysis and peak gain placement. Following this approach, the converter can minimize the conduction loss while maintaining the required gain range. A 400-W, 400-V output and 25-38V input LLC converter is built using the proposed method, which achieves above 98 peak efficiency. As a comparison, the conventional searching method is used to reselect the LLC parameters for the same specifications, and the experimental results show that the optimal design has better performance. © 2012 IEEE.

Publication Date

1-1-2013

Publication Title

IEEE Transactions on Power Electronics

Volume

28

Issue

5

Number of Pages

2285-2296

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1109/TPEL.2012.2211895

Socpus ID

84870499373 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84870499373

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