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首页> 外文期刊>Power Electronics, IET >Common mode voltage reduction in a three-to-five phase matrix converter fed induction motor drive
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Common mode voltage reduction in a three-to-five phase matrix converter fed induction motor drive

机译：三相至五相矩阵变频器供电的感应电动机驱动器中的共模电压降低

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摘要

Multiphase power converters generate common mode voltage due to switching actions of the power switches. The resulting common mode current in multiphase motor drives flow through the bearing and shaft. Continuous flow of common mode current gradually weakens the performance of the drives. A space vector pulse width modulation (SVPWM) technique is developed to reduce Common mode voltage (CMV) in a three-to-five-phase matrix converter-based five-phase induction motor drive system. The principle of CMV reduction lies in the selection of proper space vectors for implementation of SVPWM. The proposed technique achieves reduction in the CMV without affecting other performances, i.e. loss in output voltage, total harmonic distortion in the output voltages and currents. The common mode voltage is reduced by selecting a set of proper zero space vectors and placing them in a suitable position within a switching cycle. Using this approach, CMV is reduced by ~30%. Simulation and experimental results are provided for a five-phase induction motor drive fed using a three-to-five-phase matrix converter.
机译：多相功率转换器由于功率开关的开关动作而产生共模电压。多相电动机中产生的共模电流驱动流经轴承和轴。共模电流的连续流动逐渐削弱了驱动器的性能。在基于三到五相矩阵变换器的五相感应电动机驱动系统中，开发了一种空间矢量脉冲宽度调制（SVPWM）技术来降低共模电压（CMV）。减少CMV的原理在于选择合适的空间矢量来实现SVPWM。所提出的技术在不影响其他性能的情况下实现了CMV的降低，即，输出电压的损失，输出电压和电流的总谐波失真。通过选择一组适当的零空间矢量并将其放置在开关周期内的适当位置，可以降低共模电压。使用这种方法，CMV减少了约30％。提供了使用三至五相矩阵转换器馈电的五相感应电动机驱动器的仿真和实验结果。

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