应用感应滤波原理构建的电动汽车充电站直流供电系统.PDFVIP

第2 卷 第4 期 新能源汽車供能技術 Vol.2 No.4 2018 年12 月1 日 Energy Supply Techniques of New Energy Vehicles Dec. 1, 2018 应用感应滤波原理构建的电动汽车充电站直流供电系统 王绍阳，李 勇，刘乾易，罗隆福 (国家电能变换与控制工程技术研究中心(湖南大学)， 湖南 长沙 410082) 摘要：针对当前电动汽车充电站运行效率低、谐波损耗等电能质量问题，提出了一种应用感应滤波方法的电动汽 车充电站直流供电系统。该供电系统由感应滤波变压器和12 脉波整流桥构成，在负载侧实现了电能质量治理，减 少了谐波对电网的影响，降低了谐波对变压器的损耗。通过介绍应用感应滤波原理构建的直流供电系统及其充电 站的拓扑结构，建立了直流供电系统的等效电路模型，利用数学推导进一步分析了感应滤波方法在谐波抑制和无 功补偿方面的工作机理，得出了实施感应滤波方法的必要条件，最后搭建仿真模型测试了所提出的直流供电系统 的滤波效果，验证了该理论分析的正确性。 关键词：电动汽车；谐波抑制；无功补偿；多脉波整流；感应滤波；直流供电系统 A DC power supply system of electric vehicle charging station developed with inductive filtering method WANG Shaoyang, LI Yong, LIU Qianyi, LUO Longfu (National Electric Power Conversion and Control Engineering Technology Research Center, Hunan University, Changsha 410082, China) Abstract: Aiming at the problems of low operating efficiency and harmonic loss of Electric Vehicle (EV) charging station, a DC power supply system with inductive filtering method for EV charging station is proposed. The power supply system is composed of the inductive filtering transformer and a 12-pulse rectifier bridge, which realizes the power quality management on the load side, reduces the influence of harmonic on the power grid and lowers the loss of harmonic on the transformer. By introducing a topology of EV charging station and DC power supply system in which inductive filtering method is applied, the equivalent circuit model of DC power supply system is established. By means of the mathematical derivation, the operating mechanism and reactive power compe