Title :
A sensorless direct torque control technique for permanent magnet synchronous motors
Author :
Fu, Minghua ; Xu, Longya
Author_Institution :
Dept. of Electr. Eng., Ohio State Univ., Columbus, OH, USA
Abstract :
A sensorless control strategy for permanent magnet synchronous motors (PMSM) is presented in this paper. A direct torque control (DTC) scheme based on the measurement and observation of stator current and flux vectors is proposed. The rotor position and actual torque is estimated through the stator flux estimation. Stator flux and voltage vectors are calculated according to the error between the actual and command torque to obtain the desired torque. Computer simulation and experimental results are presented to demonstrate the effectiveness of the proposed scheme
Keywords :
control system analysis; control system synthesis; machine testing; machine theory; machine vector control; parameter estimation; permanent magnet motors; rotors; stators; synchronous motors; torque control; computer simulation; control design; control performance; control simulation; flux vectors; parameters estimation; permanent magnet synchronous motors; rotor position; sensorless direct torque control technique; stator current; stator flux; voltage vectors; Computer errors; Current measurement; Permanent magnet motors; Permanent magnets; Rotors; Sensorless control; Stators; Torque control; Torque measurement; Voltage;
Conference_Titel :
Industry Applications Conference, 1999. Thirty-Fourth IAS Annual Meeting. Conference Record of the 1999 IEEE
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-5589-X
DOI :
10.1109/IAS.1999.799948
