基于LCL滤波器的蓄电池双向DC/DC变换器的研究  

Research on battery DC/DC bidirectional converter using LCL filter

作　　者：李宁宁[1] 梁爽[1] 纪延超[1] 王建赜[1] 乔仁爽 

机构地区：[1]哈尔滨工业大学电气工程及自动化学院,黑龙江哈尔滨150001 [2]山东黄金集团烟台设计研究工程有限公司,山东烟台264006

出　　处：《电机与控制学报》2015年第7期8-13,共6页Electric Machines and Control

基　　金：科技部国际合作项目(2010DFR70600)

摘　　要：针对LCL型滤波器在DC/DC储能变换器的应用中,流过滤波电容的电流难以准确测量的问题,提出了一种电容电压内环反馈控制方法。首先依据蓄电池对充放电电流的要求,对LCL滤波器的参数进行了设计,以蓄电池侧电流为控制对象,加入滤波电容电压微分的反馈环节,增加系统阻尼,提高系统的稳定性。将LCL型滤波器应用到DC/DC储能变换器中,相比于传统的L型滤波器,可以大大减小滤波电感值,减小蓄电池充放电电流纹波,延长蓄电池寿命。最后通过仿真和实验验证了该方案的正确性和有效性。It is difficult to measure the current of capacitor in LCL filter,in order to solve this problem,a kind of capacitor voltage feedback loop control method was proposed. The parameters of LCL were designed based on the requirements of the ripple of charging and discharging current. And the control strategy with the capacitor voltage differential feedback was proposed to control the battery side current,which can eliminate resonance and improve system stability. The simulation and experiment results prove that the strategy proposed is correct and practicable.

关 键 词：LCL滤波器 DC/DC双向变换器 蓄电池充放电 电容电压微分反馈 

分 类 号：TM46[电气工程—电器]