DocumentCode
601709
Title
Optimal trajectory control of LLC resonant converters for soft start-up
Author
Weiyi Feng ; Lee, Fred C.
Author_Institution
Center for Power Electron. Syst., Virginia Tech, Blacksburg, VA, USA
fYear
2013
fDate
17-21 March 2013
Firstpage
1445
Lastpage
1451
Abstract
In this paper, the soft start-up process for the LLC resonant converter is investigated and optimized based on the graphical state-plane analysis. By setting a current limiting band, several optimal switch patterns are proposed to settle the initial condition. Then, by sensing the output voltage, the optimal frequency is determined within the current limiting band. Therefore, no current and voltage stress in the resonant tank is guaranteed during the soft start-up process. Meanwhile, the output voltage is built up quickly and smoothly.
Keywords
optimal control; resonant power convertors; trajectory control; LLC resonant converters; current limiting band; graphical state-plane analysis; optimal frequency; optimal switch patterns; optimal trajectory control; resonant tank; soft start-up process;
fLanguage
English
Publisher
ieee
Conference_Titel
Applied Power Electronics Conference and Exposition (APEC), 2013 Twenty-Eighth Annual IEEE
Conference_Location
Long Beach, CA
ISSN
1048-2334
Print_ISBN
978-1-4673-4354-1
Electronic_ISBN
1048-2334
Type
conf
DOI
10.1109/APEC.2013.6520488
Filename
6520488
Link To Document