基于等效电路法的大容量蓄电池系统建模与仿真  

Modeling and Simulation of Large Capacity Battery Systems Based on the Equivalent Circuit Method

作　　者：彭思敏[1] 施刚[1] 蔡旭[2] 李睿[1] 

机构地区：[1]电力传输与功率变换控制教育部重点实验室(上海交通大学电气工程系),上海市闵行区200240 [2]风力发电研究中心(上海交通大学电气工程系),上海市闵行区200240

出　　处：《中国电机工程学报》2013年第7期11-18,24,共8页Proceedings of the CSEE

基　　金：国家863高技术基金项目(2011AA05A110);高等学校博士学科点专项科研基金资助课题(20110073 120029)~~

摘　　要：储能系统为可再生能源(如风电、光伏等)大规模接入电网提供了一种有效的方法。通过电池单体的串/并联可实现电池系统容量的扩大。该文针对由电池单体串并联组成的大容量蓄电池系统(large capacity battery system,LCBS),考虑到电池单体的参数非线性及容量不一致性等特点,结合串/并联电路工作特性,提出一种适宜于电气设计与仿真的LCBS等效电路建模方法,并在Matlab/Simulink中对串联、并联及串/并联型的锂离子LCBS进行了建模与仿真。通过仿真结果与实验数据的对比表明,在不同带载情况下,所提出LCBS模型能准确预测其放电工作特性,进而验证了所提出模型的准确性。As an alternative,a battery energy storage system（BESS） is widely regarded as an effective solution to deal with the large scale integration of renewable energy sources into electric networks,such as wind energy and photovoltaic energy.A large capacity battery system（LCBS） can supply high capacity when its cells are connected in series and parallel.In this paper,the operation principle of LCBS in series and parallel connection was analyzed in details.Considering the nonlinear parameters and inconsistent quality of the cells,an accurate equivalent circuit model of Li-ion LCBS was presented,which was applicable for electrical circuit design and simulations.The accurate models of the battery system in series and/or parallel connection were realized by the Matlab/Simulink.The close agreement between simulations and experimental results indicates that the models can accurately capture the discharging behavior of LCBS under various load conditions and validates the correctness of the proposed model of LCBS.

关 键 词：储能 可再生能源 大容量蓄电池系统 等效电路法 建模 

分 类 号：TM614[电气工程—电力系统及自动化] TM910