级联式储能系统中电池自均衡控制策略研究

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Abstract In terms of the imbalance problems of the state of charge of batteries in independent battery powered hybrid cascade energy storage system, this paper proposes a new control strategy, the difference charge or discharge, which based on Selective Harmonic Elimination PWM .When the state of charge of batteries is imbalanced, carry on difference charge or discharge to adjust the state of charge of batteries convergence .If balanced ,transfer to the synchronous charge or discharge by using phase shift SPWM .As a result, it improves the whole hybrid cascade storage system availability and capacity and prolongs the batteries' service life even that of the whole system . This paper derives the principle of difference charge or discharge control method and puts forward the switching condition .Its reasonable and feasibility are verified by an example of hybrid cascade energy storage system, from theoretical analyses in conjunction with model investigations established in PSCAD/EMTDC.

Key words： Hybrid cascade energy storage system self-balancing control phase shift PWM selective harmonic elimination (SHE) PWM

Received: 10 August 2014 Published: 08 September 2015

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	Articles by authors
	Ai Hongke
	Wu Junyong
	Hao Liangliang
	Feng Baoquan
	Zhang Jirui
	Zhang Jiao

Cite this article:

Ai Hongke,Wu Junyong,Hao Liangliang等. Research on Battery Self-Balancing Control Strategy in Cascade Energy Storage System[J]. Transactions of China Electrotechnical Society, 2015, 30(14): 442-449.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2015/V30/I14/442

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