背靠背可控驱动器中间谐波的来源和缓解

H. Soltani, P. Loh, F. Blaabjerg, Firuz Zare
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引用次数: 7

摘要

这里的主题是确定可以影响背靠背可控驱动器的间谐波源,并在电机电流不平衡时在电网侧电流中产生非特征间谐波分量。然后制定并提出了一种新的控制方法来补偿源,导致不失真的电网电流,随着越来越多的驱动器连接到电网,这变得越来越重要。结果表明,在背对背可控驱动的情况下,可以减小由电机电流不平衡引起的输入电流谐波畸变。
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Sources and mitigation of interharmonics in back-to-back controllable drives
The theme here is to identify the sources of interharmonics that can affect back-to-back controllable drives and make non-characteristic interharmonic components in the grid side currents when the motor currents are unbalanced. A new control methodology then is formulated and proposed to compensate for the sources, leading to undistorted grid currents, which are growingly important as more drives are tied to the grid. It is shown that in the case of back-to-back controllable drives it is possible to reduce the input current interharmonic distortion caused by motor current imbalance.
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