Rotor induced harmonic voltages caused by supply voltage distortion, the interaction and its influence on the overall energy efficiency of Line Start Permanent Magnet Machines

2013 International Electric Machines & Drives Conference Pub Date : 2013-05-12 DOI:10.1109/IEMDC.2013.6556233

C. Debruyne, S. Derammelaere, J. Desmet, L. Vandevelde

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引用次数: 1

Abstract

The demand for ever increasingly efficient electromechanical energy conversion has resulted in the commercialization of medium power Line Start Permanent Magnet Motors. Similar to the standard Direct On line induction machines are these machines susceptible to grid voltage distortion. As LSPMM are to become a mature technology, the influence of voltage distortion on their efficiency should be addressed. The grid voltage distortion is composed of multiple harmonic components and in this paper it will be elucidated that, due to the synchronous operation, a specific interaction of rotor harmonic currents induced by different stator harmonic orders can be noticed. Although straight forward adaptation of harmonic loss mechanisms for standard squirrel cage induction motors to the LSPMM seems logic, this research will reveal that harmonic loss models of induction machines are unsuitable to give accurate or even reasonable estimations of the influence supply voltage distortion on the energy efficiency of LSPMM.

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研究了电源电压畸变引起转子感应谐波电压的相互作用及其对线路起动永磁电机整体能效的影响

对日益高效的机电能量转换的需求导致了中功率线启动永磁电机的商业化。与标准的直接在线感应电机类似，这些电机容易受到电网电压畸变的影响。随着LSPMM技术的成熟，必须解决电压畸变对其效率的影响。电网电压畸变是由多个谐波分量组成的，本文将阐明，由于同步运行，不同定子谐波阶数引起的转子谐波电流会有特定的相互作用。虽然直接将标准鼠笼式感应电机的谐波损耗机制应用于LSPMM似乎是合乎逻辑的，但本研究将揭示，感应电机的谐波损耗模型并不适合准确甚至合理地估计电源电压畸变对LSPMM能效的影响。

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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2013 International Electric Machines & Drives Conference

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