Battery voltage sensorless charge equalizer using the multi-winding transformer
- Authors
- Lim, Chang-Soon; Kim, Rae-Young; Hyun, Dong-Seok
- Issue Date
- Feb-2013
- Publisher
- IEEE
- Citation
- 2012 IEEE Vehicle Power and Propulsion Conference, VPPC 2012, pp.789 - 793
- Indexed
- SCOPUS
- Journal Title
- 2012 IEEE Vehicle Power and Propulsion Conference, VPPC 2012
- Start Page
- 789
- End Page
- 793
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/163453
- DOI
- 10.1109/VPPC.2012.6422543
- ISSN
- 1938-8756
- Abstract
- A simple and easy magnetic coupling equalizer for a series-connected lithium-ion battery string is presented. The equalizer applies identical duty cycle to all active power switches without using the voltage sensing circuits and the secondary side components of multi-winding transformer. During the turn-on switching interval, the equalizer automatically transfers energy from the high-voltage battery cells to the low-voltage battery cells. The proposed equalizer can effectively reduce size, cost, and design complexity of the equalizer system.
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