Comparison of Insulation Capability of Round Wire and Hairpin Windings by Partial Discharge Measurements

L. Hanisch, M. Henke
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Abstract

In this paper, the reliability of different windings of electrical machines is analyzed using partial discharge measurements. The focus is on the comparison between round wire and hairpin windings. In addition, round wire windings with different degrees of insulation are compared. The measurements were performed on self-developed motorettes, which have insulation systems of real machines. The partial discharge measurements are performed both between the windings and between the winding and the stator core to investigate the slot and the end winding areas. The results show a superior partial discharge behavior of hairpin windings compared to round wires. In addition, the end winding could be identified as a weak point compared to the slot area.
用局部放电测量法比较圆线和发夹绕组的绝缘性能
本文采用局部放电测量方法对电机不同绕组的可靠性进行了分析。重点是圆线和发夹绕组之间的比较。此外,还对不同绝缘程度的圆线绕组进行了比较。测量是在自行研制的电动机上进行的,该电动机具有真实机器的绝缘系统。局部放电测量在绕组之间和绕组与定子铁心之间进行,以研究槽和端绕组区域。结果表明,发夹绕组的局部放电性能优于圆线。此外,与槽区相比,末端绕组可以被识别为弱点。
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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