锂电池/超级电容混合动力系统及控制策略  

Control strategy of lithium battery and supercapacitor hybrid power system

作　　者：陈静[1] 

机构地区：[1]西南交通大学电气工程学院,成都610031

出　　处：《电测与仪表》2016年第2期52-56,共5页Electrical Measurement & Instrumentation

摘　　要：混合动力轻轨车(Hybrid Light Rail Vehicle,HLRV)以锂电池作为主动力源,超级电容作为辅助动力源,具有良好的技术性与经济性。提出锂电池与超级电容分别通过Buck/Boost双向变换器并联于直流母线侧的储能主电路结构,以实现功率的双向调节并提高超级电容器利用率。为了提高系统输出功率以及减小电流纹波,采用三相交错并联结构。针对锂电池响应速度慢的问题,提出了超级电容响应负载变化,锂电池响应超级电容低频分量的间接功率控制策略。仿真结果验证了该系统以及控制策略的正确性。Hybrid Light Rail Vehicle with on-board energy storage systems has good characteristic in technical and economical. The control strategy employing lithium battery as the main power source and supercapacitor as the auxiliary power source is proposed. To improve energy-efficient operation of the system and reduce the current ripple, the use of three-phase alternating parallel structure technique is applied. In view of the slow response of lithium battery, this paper put forward the interleaved power control strategy with the characteristics of supercapacitor＇ s response load changing, and the lithium battery response supercapacitor＇ s low frequency. It proposed that the lithium battery and supercapacitor respectively in parallel to the side of the storage structure of main circuit through the Buck/Boost bidi- rectional dc-dc converter, so as to realize the two-way adjusting of power and improve the utilization rate of the supercapacitor. Simulation results validate the correctness of the system and its control strategy.

关 键 词：混合动力轻轨车 锂电池 超级电容 Buck/Boost双向变换器 间接功率控制 

分 类 号：TM933[电气工程—电力电子与电力传动]