摘要
分析了异步电动机在电压不对称时,产生的负序分量电流对异步电动机造成的影响;负序电流过热要比正序电流更为严重,提出了等效方法替代定子电流方案;提出了反时限特性中幂函数用泰勒级数求取时限的方法。
In this paper, effect of negative sequence current is analyzed which occurs while the power supply is asymmetry in asynchronous motor. Thermal affection of negative sequence current is more serious than that of posi- tive sequence current. Equivalent scheme is proposed to simulate the stator current. Means to get the time is also ad- vanced in inverse time characteristic exponential function via Taylor progression.
出处
《江西电力职业技术学院学报》
CAS
2013年第4期13-14,35,共3页
Journal of Jiangxi Vocational and Technical College of Electricity
关键词
异步电动机
负序电流
等效电流
反时限特性
过电流保护
asynchronous motor
negative sequence current
equivalent current
inverse time characteristic
protection of over current
