New methods to control EMI noises generated in motor drive systems: controlling methods focusing on EMI noise paths

Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344) Pub Date : 2002-12-10 DOI:10.1109/IAS.2002.1042809

N. Mutoh, M. Ogata, F. Harashima

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引用次数: 2

Abstract

The paper describes methods that control EMI noises generated in power converters (rectifier and inverter) by using power printed circuit techniques. Two kinds of differential and common mode noises are generated in motor drive systems. A method is proposed that controls the differential mode noises by symmetrically forming the structure of the positive and negative power transmission lines of the power converter using a four-layer printed power circuit technique. Simulations done using the method show that differential mode currents appearing between the terminals of the power converters and the smoothing capacitors can be almost completely eliminated and the common mode currents are shunted into the artificial ground plane. Another method is also proposed that controls the shunted common mode currents so as to prevent series resonance phenomena by inserting a damping impedance between the frame of the machine and the ground. Experiments verify that the common mode currents generated in the motor drive systems can be effectively reduced by the two proposed methods.

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控制电机驱动系统中产生的电磁干扰噪声的新方法:以电磁干扰噪声路径为重点的控制方法

本文介绍了利用功率印刷电路技术控制电源变换器(整流器和逆变器)中产生的电磁干扰噪声的方法。电机驱动系统产生两种不同的差模噪声和共模噪声。提出了一种采用四层印刷电源电路技术，通过对称地形成电源变换器的正负传输线结构来控制差模噪声的方法。仿真结果表明，该方法几乎可以完全消除功率变换器端子与平滑电容之间的差模电流，并将共模电流分流到人工地平面。还提出了另一种方法，通过在机架与地之间插入阻尼阻抗来控制共模分流电流，防止串联谐振现象的发生。实验证明，这两种方法都能有效地减小电机驱动系统中产生的共模电流。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344)

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