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变频器驱动电机时的EMI影响分析

Influence Analysis of EMI in Power Converter Drive System
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摘要 PWM逆变器驱动电机因其具有优越的控制性能而得到了广泛的应用,然而由于逆变器的开关模式带来的电磁干扰问题,也给电机带来了不少负面影响。在给出了电机和电缆高频模型的基础上,分别对不同电缆长度和不同开关频率对电机过电压的影响进行了仿真分析。最后搭建了实验平台,用频谱分析仪对电机的EMI进行测试,验证了上述不同因素对电机EMI影响的分析。 Due to the improvement of control performance,PWM inverters are widely used in motor drive system.However,the electromagnetic interference （EMI） has undesirable effects on motor which produced by the inverters because of the operation of switch mode.The high frequency model of the power cable and motor was designed.The influence of system parameters such as cable lengths and the switching frequencies of the inverter on motor terminal overvoltage was analyzed.The experimental platform was setted up and the EMI in motor was tested by the spectrum analyzer.The test results show good agreement with the simulate analysis result.
作者 何凤有 王婷婷 李宝峰 徐兴华 王珂
机构地区 中国矿业大学信息与电气工程学院 江苏省工程实验中心
出处 《电气传动》 北大核心 2013年第10期61-64,共4页 Electric Drive
关键词 PWM逆变器 电机高频模型 电缆长度 电磁传导干扰 PWM inverter the high frequency model of motor power cable length electromagnetic interference （EMI）
分类号 TM921 [电气工程—电力电子与电力传动]
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参考文献7

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二级参考文献24

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电气传动
2013年 第10期

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