Two‐switch equaliser for series‐connected battery stack using zeta type converter and symmetrical capacitor–diode circuit | Zendy

Li Xiaolong | Zendy; Xu Jianping | Zendy; Xu Shungang | Zendy; Zhuang Shengxian | Zendy; Qin Fuban | Zendy

Open Access

Two‐switch equaliser for series‐connected battery stack using zeta type converter and symmetrical capacitor–diode circuit

Author(s) -

Li Xiaolong,

Xu Jianping,

Xu Shungang,

Zhuang Shengxian,

Qin Fuban

Publication year - 2017

Publication title -

electronics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.375

H-Index - 146

eISSN - 1350-911X

pISSN - 0013-5194

DOI - 10.1049/el.2017.3501

Subject(s) - equaliser , capacitor , stack (abstract data type) , diode , series (stratigraphy) , electronic engineering , battery (electricity) , electrical engineering , series and parallel circuits , materials science , equivalent circuit , computer science , engineering , voltage , topology (electrical circuits) , physics , channel (broadcasting) , paleontology , power (physics) , quantum mechanics , biology , programming language

A two‐switch equaliser for series‐connected battery stack using zeta type converter and symmetrical capacitor–diode circuit is proposed. The proposed equaliser consists of a zeta type front‐end dc–dc converter and symmetrical capacitor–diode circuit, uses only two active switches and two magnetic components, thus it benefits from small circuit volume and flexible for extension. Meanwhile, it can work under open loop, which makes its control simple. Furthermore, high efficiency is achieved by zero voltage switching of all switches. Finally, experimental results of a prototype of the proposed equaliser are presented to verify the analysis results.

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