Design consideration of CC-CV controller of LLC resonant converter for Li-ion battery charger
- Authors
- Park, Ki-Hyeon; Choi, Yeong-Jun; Choi, See-Young; Kim, Rae Young
- Issue Date
- Dec-2015
- Publisher
- IEEE
- Citation
- 2015 IEEE 2nd International Future Energy Electronics Conference, IFEEC 2015, pp.1 - 6
- Indexed
- SCOPUS
- Journal Title
- 2015 IEEE 2nd International Future Energy Electronics Conference, IFEEC 2015
- Start Page
- 1
- End Page
- 6
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/143035
- DOI
- 10.1109/IFEEC.2015.7361597
- Abstract
- In this paper, the design consideration of the dual control scheme of a LLC resonant converter for a Li-ion battery charger is proposed to stabilize operation during whole charging process. The theoretical approach of constant-current and constant-voltage controller is presented when considering the nonlinear property of a Li-ion battery under wide ranged output voltage. By applying the extended describing function method, the small-signal ac model of the resonant converter is obtained. The feedback controller is designed to guarantee stable and robust, while providing a desired crossover frequency and sufficient phase margin. Several simulation results are provided in order to verify the effectiveness of the proposed design consideration.
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