由非正弦电压供电的三相感应电动机的谐波转矩

2004 11th International Conference on Harmonics and Quality of Power (IEEE Cat. No.04EX951) Pub Date : 2004-09-12 DOI:10.1109/ICHQP.2004.1409430

J. D. de Abreu, J.S. de Sa, C. Prado

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引用次数: 6

摘要

低短路容量电力系统在提供非线性负载时，可能会出现相当大的电压波形畸变。当三相感应电动机连接到这样的系统时，在启动过程中可能会遇到额外的要求，如由于集肤效应而在转子棒中过热，以及由于谐波扭矩而在轴中产生机械振动。本文提出了一种方法来分析三相异步电动机在非正弦电压供电时产生的谐波转矩的行为，同时考虑了启动时转子条的集肤效应和定子漏抗的饱和。重要的是要注意，分析和推导的方程是基于制造商目录中提供的普通数据。

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Harmonic torques in three-phase induction motors supplied by nonsinusoidal voltages

Low-short-circuit-capacity electric systems may present considerable distortion in the voltage waveform when supplying nonlinear loads. Three-phase induction motors when connected to such a system may suffer additional requirements during start-up as overheating in the rotor bars due to the skin effect, and mechanical vibrations in the shaft due to harmonic torques. This work presents an approach to analyze the behavior of the harmonic torques produced by three-phase induction motors when supplied by nonsinusoidal voltage, taking into account the skin-effect in the rotor bars and the saturation of the stator leakage reactance during start-up. It is important to notice that the analysis and the derived equations are based on ordinary data available in the manufacturer's catalogue.

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2004 11th International Conference on Harmonics and Quality of Power (IEEE Cat. No.04EX951)

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