| 引用本文: | 周新宇,姜久春,张刚,等.SVPWM矢量合成方式对直流母线充电站漏电流的影响[J].电力系统保护与控制,2013,41(21):1-8. |
| ZHOU Xin-yu,JIANG Jiu-chun,ZHANG Gang,et al.Effect of SVPWM vector synthesis methods on the DC bus charge station leakage current[J].Power System Protection and Control,2013,41(21):1-8 |
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| 摘要: |
| 针对采用直流母线拓扑的电动汽车充电站，为降低成本和损耗而不增加变压器结构时存在漏电流的问题，对无变压器隔离的直流母线充电站漏电流产生的原因进行了理论分析，在此基础上提出了一种无变压器结构直流母线充电站共模漏电流模型。根据提出的建模方法和SVPWM整流器理论，最终给出了共模电压和漏电流的数学描述，并进一步分析了整流器采用SVPWM控制时不同空间矢量合成方式对充电站系统共模电压和漏电流的影响，得到了不同空间矢量合成方式对应的共模电压和电流。最后，通过仿真和实验验证了该模型和矢量合成方式理论分析的正确性。 |
| 关键词: 直流母线 充电站 无变压器结构 共模电压 漏电流 |
| DOI：10.7667/j.issn.1674-3415.2013.21.001 |
| 分类号: |
| 基金项目:国家高技术研究发展计划项目（863计划）（2011AA05A108） |
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| Effect of SVPWM vector synthesis methods on the DC bus charge station leakage current |
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ZHOU Xin-yu,JIANG Jiu-chun,ZHANG Gang,et al
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| Abstract: |
| In order to reduce costs and loss, the electric vehicle charging station with the DC bus topology does not add the isolation transformer, and produces leakage current. Based on a theoretical analysis of the reason of producing leakage current, a common mode leakage current model of transformerless DC bus charging station is proposed. Based on this model and the theory of SVPWM converter, the mathematical descriptions of common mode voltage and leakage current are given. The effect of different space vector synthesis modes on the common mode voltage and leakage current of charging station system is analyzed when the grid-connected inverter uses SVPWM control. The common mode voltage and current of different space vector synthesis modes are obtained. Experiments and simulation verify the correctness of the modeling method and space vector synthesis theory. |
| Key words: DC bus charging station without transformer structure common mode voltage leakage current |
