METHOD OF CONTROLLING AN AC MOTOR AND DEVICE THERE

专利名称：METHOD OF CONTROLLING AN AC MOTOR

AND DEVICE THEREOF.

发明人：YAMAMURA, SAKAE,KAWADA, SHIGEKI申请号：EP82900996申请日：19820330公开号：EP0075023A4公开日：19830809

摘要：Method of controlling an AC motor and a device thereof, in which the excitingcurrent 10 of an AC motor is kept constant, and the primary current I, is changed inresponse to the velocity difference An so as to control the AC motor. A memory device(18) previously stores the torque-to-slip frequency ω, characteristics, based on thesecondary leakage reactance, and the characteristics of the slip frequency ωs-to-primarycurrent vectors Il, Φl. According to the torque command T obtained from the velocitydifference An, the slip frequency ωs and the primary current vectors II, ΦI are read outand then the 3-phase current commands iu, iv, iw are delivered. This method and devicesuppresses torque irregularities and improves response.

申请人：FANUC LTD

更多信息请下载全文后查看