多充电桩并联谐振特性及虚拟阻尼控制策略  

Parallel Resonant Characteristics and Virtual Damping Control Strategy of Multi-charging Pile

作　　者：李斌 李涛永[1,2] 刘畅 张静[1,2] 白士贤 LI Bin;LI Taoyong;LIU Chang;ZHANG Jing;BAI Shixian(Beijing Engineering Technology Research Center of Electric Vehicle Charging/Battery Swap,Beijing 100192,China;Department of Power Consumption&Energy Efficiency,China Electric Power Research Institute,Beijing 100192,China;Xi’an Actionpower Electric Co.,Ltd.,Xi’an 710119,Shannxi,China)

机构地区：[1]北京市电动汽车充换电工程技术研究中心,北京100192 [2]中国电力科学研究院用电与能效研究所,北京100192 [3]西安爱科赛博电气股份有限公司,陕西西安710119

出　　处：《电气传动》2018年第10期70-74,共5页Electric Drive

基　　金：北京市电动汽车充换电工程技术研究中心开放基金资助(YDB51201700373);国家电网公司科技项目:电动汽车充电设施充电互通性;安全性;远程化检测关键技术研究及示范应用(YD71-17-010)

摘　　要：多个LCL型充电桩并入电网运行时,由于充电桩之间的相互作用,系统阻抗网络以及网络中谐振特性也随之变化。针对多个充电桩并联引发的谐振问题,首先基于诺顿等效建立网络电路等效模型,得出系统数学模型,并且详细分析了系统的谐振特性。然后为解决该谐振问题,提出了一种基于电容、电压反馈的虚拟电阻阻尼方法。最后,仿真和实验验证了分析的准确性以及虚拟电阻阻尼方法的有效性。When multiple LCL-type charging piles are integrated into the grid,the resonant characteristics of the system impedance network and the network are also changed due to the interaction between the charging piles.Aiming at the resonance problem caused by the parallel connection of multiple charging piles,the equivalent model of network circuit based on Norton was established firstly,the system mathematical model was obtained,and the resonant characteristics of the system was analyzed in detail.Then,a damping method of virtual resistance based on capacitive voltage feedback was proposed to solve the resonance problem.Finally,the simulation and experiment verify the accuracy of the analysis and the effectiveness of the virtual resistance damping method.

关 键 词：LCL型充电桩 谐振特性 虚拟电阻 

分 类 号：TM46[电气工程—电器]