Electric Circuit Model Suitable for Common Mode Current Paths Distributing in the Motor Drive System.
Electric Circuit Model Suitable for Common Mode Current Paths Distributing in the Motor Drive System.
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适用于电机驱动系统中共模电流路径分布的电路模型。
DOI：
10.1541/ieejias.123.131
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发表时间：
2003
影响因子：
--
通讯作者：
F. Harashima
中科院分区：
文献类型：
--
作者：
N. Mutoh;M. Ogata;F. Harashima
利用实验数据分析了由一个变换器和一个逆变器组成的功率变换器电机驱动系统中产生的传导电磁干扰噪声。研究了共模噪声（电压和电流）受开关操作引起的电压波动的强烈影响的过程。发现共模电流是分布在电机驱动系统中的串联谐振电路中的谐振电流。所述电路具有与开关操作产生的电压波动有关的各种谐振频率以及在诸如交流矢量或电动机等机器的终端产生的微浪涌电压。因此，利用将共模电流分离成由FFT方法分析的波得到的瞬态波形来估计分布式串联谐振电路的参数。仿真和实验表明，所提出的电路模型能较好地反映电机驱动系统共模电流路径的实际电路。
Experimental date are used to analyze conducted EMI noises which are produced in a motor drive system with power converters comprised of a converter and an inverter. The processes are investigated in which common mode noises (voltages and currents) are strongly influenced by voltage fluctuations occurring due to switching operations. It is found that the common mode currents are resonance currents which appear in series resonance circuits distributed in the motor drive system. The circuits have various kinds of resonance frequencies related to voltage fluctuations produced by switching operations and micro-surge voltages generated at the terminal of machines such as an ac rector or a motor. Thus, parameters of the distributed series resonance circuits are estimated using the transient waveforms obtained by separating the common mode current into waves analyzed by the FFT method. It is proved through simulations and experiments that the proposed circuit models closely represent actual electric circuits for common mode current paths distributed in the motor drive system.