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-  2018 

考虑多拓扑结构的电动汽车充电机对电网谐波影响分析 Analysis of harmonic effects of electric vehicle charger considering multiple topologies on power grid

Keywords: 电动汽车充电机,多拓扑结构,整流环节,DC/DC功率变换环节,谐波分析

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Abstract:

针对目前采用等效模型进行谐波分析的不足,提出一种考虑多拓扑结构的充电机谐波分析模型,综合考虑整流环节和DC/DC功率变换环节对谐波特性的影响.利用Matlab/Simulink软件搭建"不控整流+斩波器"型、"不控整流+高频DC/DC变换器"型及"PWM整流+高频DC/DC变换器"型3种典型拓扑结构的充电机,分别选取4种不同工况进行谐波分析,并对3种充电机的谐波特性进行比较研究.结果表明,不同拓扑结构的电动汽车充电机的谐波特性存在差异,整流环节和DC/DC功率变换环节均会对充电机产生的谐波造成影响.该研究可为采用直流快速充电方式的电动汽车充电机接入电网的谐波分析提供依据

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