绕组电容对感应电动机高频时谐波损耗的影响

Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting Pub Date : 1992-10-04 DOI:10.1109/IAS.1992.244468

Dustin J Maly, D. Novotny, Cynthia A. Thompson

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引用次数: 11

摘要

对100- 200khz时谐波频率下的电机电流和功率进行了实验研究。结果表明，在第一共振频率以上，由于绕组匝间电压分布极不均匀，电机损耗显著增加。对小型电机(高达10马力)的测试表明，第一次共振可以发生在低至20 kHz，但更典型的是在50-70 kHz的范围内。测试还表明，等效磁连接，即双电压电机设计的串联与并联连接，可能具有非常不同的高频特性，并且系统接地的变化会导致谐振频率和损耗的显着变化。

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The influence of winding capacitance on high frequency time harmonic losses in induction motors

An experimental study of motor current and power for time harmonic frequencies up to 100-200 kHz has been carried out. It is shown that motor losses can be significantly increased at frequencies above the first resonance by the very nonuniform voltage distribution along the winding turns. Tests on small motors (up to ten horsepower) indicate that the first resonance can occur as low as 20 kHz but is more typically in the range of 50-70 kHz. The tests also demonstrate that equivalent magnetic connections, i.e., series vs. parallel connection for dual voltage motor designs, can have very different high-frequency characteristics and that variations in system grounding result in significant changes in resonant frequencies and losses.<>

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Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting

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