Title :
Sensorless operation of surface mount permanent magnet AC (PMAC) motors
Author :
Toliyat, Hamid A. ; Shet, Deepak S.
Author_Institution :
Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA
Abstract :
A position sensorless field oriented control scheme for surface mount permanent magnet AC (PMAC) motor is presented. A digital signal processor (DSP) is used to implement the sensorless scheme. The PMAC stator is wound like that of a conventional three-phase induction motor. Taps are also provided which are used for voltage measurements. By measuring the tap voltages, absolute position of the permanent magnet AC motor, driven by a current regulated PWM inverter, with a fixed frequency ramp comparison controller, is estimated. The estimated position information is independent of the stator resistance, thus this scheme is even applicable at low speeds
Keywords :
PWM invertors; digital signal processing chips; electric current control; induction motors; machine vector control; permanent magnet motors; position control; stators; voltage measurement; DSP; current regulated PWM inverter; digital signal processor; fixed frequency ramp comparison controller; position sensorless field oriented control; sensorless operation; split phase motor; stator; surface mount permanent magnet AC motors; tap voltages measurement; taps; three-phase induction motor; voltage measurements; AC motors; Digital signal processing; Digital signal processors; Frequency estimation; Induction motors; Permanent magnet motors; Permanent magnets; Sensorless control; Stators; Wounds;
Conference_Titel :
American Control Conference, 1999. Proceedings of the 1999
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-4990-3
DOI :
10.1109/ACC.1999.786321
