摘要
交流充电桩是家用电动汽车主要的能源供给设施,利用车载式充电器为动力电池充电。国家电网公司现行标准中明确规定交流充电桩的功能,并没有考虑到车载式充电器的谐波对电网的影响。为此,针对目前交流充电桩无法抑制车载式充电器电流谐波的不足,提出将有源电力滤波技术应用到交流充电桩的设计中,构成功能更加完善的新型交流充电桩。在所搭建的实验样机上,针对两种负载特性的车载式充电器,采用传统PI控制与重复控制相结合的复合控制方法,新型交流充电桩有效地抑制了车载式充电器谐波。实验证明,采用有源电力滤波技术的交流充电桩在提高了电网侧电能质量的同时,还可以减少谐波对电能计量与计费系统的影响,保证充电通信系统的稳定性。
AC charge spots are the major energy supply facilities for power cell of electric vehicle which uses on-board charger.To overcome the disadvantages that harmonics of on-board charger directly interferes with power grids,the active power filter was applied to the AC charge spots,by which can construct the perfect and new AC charge spots.Two different characters were applied to AC charge spots of the experimental prototype,therefore,a complex control method that traditional PI control is combined with the repetitive control can effectively restrain the influences of harmonics of AC charge spots on the power grids and energy metering and billing system,and maintain the stability of the charging communication system.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2011年第1期150-156,共7页
High Voltage Engineering
