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短路比不同的無整流子電動機的過渡特性解析

  • 摘要: 本文以采用接近開關作位置檢測的突極式無整流子電動機為對象,介紹了逆變器直流側電源電壓大幅度躍變時,電動機過渡特性的解析方法,并對不同短路比的無整流子電動機的過渡特性做了解析計算和理論分析,給出了不同負荷情況下逆變器可控硅的換流界限。
    研究結果表明:
    ①當逆變器直流側電源電壓急劇增加時,短路比愈大,逆變器直流側動態電流的增加愈大,但換流充裕角△(γ-u)的減少卻變小。
    ②逆變器可控硅的換流界限隨著短路比的增大而提高。

     

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