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首页> 外文会议>Twenty-Eighth Annual IEEE Applied Power Electronics Conference and Exposition >A reduced common-mode voltage space vector modulation method for current source converters
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A reduced common-mode voltage space vector modulation method for current source converters

机译：电流源转换器的简化共模电压空间矢量调制方法

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摘要

The common-mode voltage (CMV) produced from a converter system is a source of many problems. E.g. in the motor drive system, CMV might appear at the neutral point of the motor stator windings with respect to the ground and induce destructive bearing current. Reduced common-mode voltage space vector modulation (RCMV SVM) methods have been proposed in both voltage source converter (VSC) and current source converter (CSC) systems. The available RCMV SVMs reduce the CMV by avoiding the use of zero-state vectors. However, this will lead to some negative effects, such as shrink of modulation index range, increase of switching frequencies, and power quality performance deterioration, etc. In this paper, a RCMV SVM method for CSCs is proposed. It has almost the same harmonic performance compared to the conventional SVMs by allowing the use of zero-state vectors, but with much lower CMV. The effectiveness of the proposed RCMV SVM for CSCs is verified in an experimental prototype.
机译：由转换器系统产生的共模电压（CMV）是许多问题的根源。例如。在电动机驱动系统中，CMV可能出现在电动机定子绕组相对于地面的中性点处，并产生破坏性的轴承电流。已在电压源转换器（VSC）和电流源转换器（CSC）系统中提出了降低共模电压空间矢量调制（RCMV SVM）的方法。可用的RCMV SVM通过避免使用零状态向量来减少CMV。但是，这将导致一些负面影响，例如调制指数范围的缩小，开关频率的增加以及电能质量性能的下降等。本文提出了一种用于CSC的RCMV SVM方法。与传统的SVM相比，它具有几乎相同的谐波性能，允许使用零状态矢量，但CMV却低得多。实验原型验证了所提出的RCMV SVM对CSC的有效性。

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