摘要
交流电动机的调速方法很多,有变频调速、改变磁极对数调速、改变转差率调速、转子回路(绕线式)串电阻调速等等。其中改变磁极对数调速因改造费用低、维护运行保养方便、可靠性高等优点被越来越广泛应用。
AC motor′s velocity modulation methods are many,including the frequency conversion to modulate velocity,changing number of pole pairs for velocity modulation,changing slip ratio for velocity modulation,the rotor return route（wound-rotor type） string resistance velocity modulation and so on.And because the low transformation expense,the convenient maintenance and operation and the higher reliability,changing number of pole pairs for velocity modulation is more and more widely applied.
出处
《安徽电气工程职业技术学院学报》
2012年第1期66-70,共5页
Journal of Anhui Electrical Engineering Professional Technique College
关键词
电动机
双速
循环水泵
节能
electric motor
two speed
circulating water pump
energy conservation
