基于基波磁通补偿的电动汽车充电桩谐波抑制研究Research on Harmonic Suppression of Electric Vehicle Charging Pole Based on Fundamental Magnetic Flux Compensation
于会群,林豪洋,沈昱
YU Huiqun,LIN Haoyang,SHEN Yu
摘要(Abstract):
电动汽车充电桩工作时会给电网带来谐波污染,研究其谐波抑制方法对将来大规模充电桩接入具有重要意义。针对三相不可控整流充电桩的谐波问题,对传统基波磁通补偿电路进行改进,在一次绕组侧采用两线圈取代原有的单线圈,并结合基波单调谐电路与无源滤波器提出了一种改进型谐波抑制方法。仿真结果表明,改进后的三相不可控整流充电桩所产生的谐波含量相较改进前下降了3.27%,该方法能够有效提高谐波抑制效果。
As electric vehicle charging pole works, it can bring harmonic pollution to the power grid. Consequently, it′s significant to research its harmonic suppression strategy for the access of massive charging poles in the future. Considering the harmonics of three-phase uncontrollable rectifier charging pole, an improved fundamental magnetic flux compensation circuit is proposed. In this circuit, two coils are used to replace the single coil on the primary winding side, and with a single-tuned circuit and passive filters, an improved harmonic suppression method is proposed. The simulation result shows that with the proposed method, the harmonic content produced by three-phase uncontrollable rectifier charger is 3.27% lower than before, which proves that this method can effectively suppress harmonics.
关键词(KeyWords):
电动汽车;充电桩;三相不可控整流;基波磁通补偿
electric vehicle;charging pole;three-phase uncontrollable rectification;fundamental magnetic flux compensation
基金项目(Foundation): 国家自然科学基金项目(71871160);; 上海市电站自动化技术重点实验室(13DZ2273800)
作者(Author):
于会群,林豪洋,沈昱
YU Huiqun,LIN Haoyang,SHEN Yu
DOI: 10.19585/j.zjdl.201812003
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