Voltage harmonic variation in three-phase induction motors with different coil pitches

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• 作者：Ram Deshmukh ; Anthony John Moses and Fatih Anayi
• 关键词：Coil pitch ; Chording ; Harmonics ; Stator winding
• 刊名：Journal of Magnetism and Magnetic Materials
• 出版年：2006
• 期刊代码：31_03048853
• 类别：ph
• 出版时间：September 2006
• 卷：304
• 期：2
• 页码：e810-e812
• 文件大小：243 K

摘要

A pulse-width modulation (PWM) inverter feeding four different chorded three-phase induction motors was tested for low-order odd harmonic voltage component and efficiency at different loads. Total harmonic distortion (THD) due to 3rd, 5th and 9th harmonics was less in a motor with 160° coil pitch. Particular harmonic order for each coil pitch was suppressed and the efficiency of a 120° coil pitch motor was increased by 7.5%.