| 逆变器驱动电机系统中不同接地情况下的共模耦合电流路径 |
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| 引用本文： | 幸善成,吴正国.逆变器驱动电机系统中不同接地情况下的共模耦合电流路径[J].中小型电机,2006,33(6):59-62. |
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| 作者姓名： | 幸善成 吴正国 |
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| 作者单位： | 海军工程大学电气工程系,武汉430033 |
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| 摘 要： | 分析了逆变器驱动电机系统中的共模电压、高频情况下电机内部的共模耦合通道以及共模电压在这些通道中产生的共模电流。详细分析了系统在不同接地情况下的共模电流的流向及其防护。电机双端轴承绝缘并且电机轴碳刷接地，可构成对轴承电流的最佳防护。
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| 关 键 词： | 轴承电流 共模电流 共模电压 轴电压 |
| 收稿时间： | 2005-10-18 |
Common Mode Coupling Current Circuits in PWM Motor Drives System Based on Different Grounding Method |
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| XING Shan-cheng, WU Zheng-guo.Common Mode Coupling Current Circuits in PWM Motor Drives System Based on Different Grounding Method[J].S&M Electric Machines,2006,33(6):59-62. |
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| Authors: | XING Shan-cheng WU Zheng-guo |
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| Affiliation: | Department of Electrical Engineering, Navy University of Engineering, Wuhan 430033, China |
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| Abstract: | The common mode voltage in PWM motor drive system, common mode coupling circuits in conduction motor under high frequency and the common mode currents induced by the common mode voltage were analyzed. The flow direction and protection of common currents under different grounding method were analyzed in detail. The optimal protection for bearing current was reached by the insulation of both ends of bearing and grounding of carbon brush of motor shaft. |
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| Keywords: | bearing current common mode current common mode voltage shaft voltage |
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