Title :
A PI stator resistance compensator for a direct torque controlled interior permanent magnet synchronous motor drive
Author :
Haque, M.E. ; Rahman, M.F.
Author_Institution :
Sch. of Electr. Eng. & Telecommun., New South Wales Univ., Kensington, NSW, Australia
Abstract :
The direct torque control (DTC) scheme based on stator flux estimation has gained popularity since speed feedback is not essential in this technique. With DTC, the electromagnetic torque and stator flux can be estimated using the measured stator voltages and currents. The estimation does not depend on motor parameters except for the stator resistance. The variation of stator resistance due to changes in temperature or frequency degrade the performance of DTC controller by introducing errors in the estimated flux linkage vector and the electromagnetic torque. Compensation for the effect of stator resistance variation then become necessary. Estimation of the stator resistance and its compensation using a proportional-integral (PI) estimator has been proposed in this paper
Keywords :
compensation; electric resistance; machine control; magnetic flux; parameter estimation; permanent magnet motors; stators; synchronous motor drives; torque control; two-term control; PI stator resistance compensator; compensation; direct torque control; electromagnetic torque; flux linkage vector estimation; interior permanent magnet synchronous motor drive; measured stator currents; measured stator voltages; proportional-integral estimator; stator flux; stator flux estimation; stator resistance; stator resistance variation; Current measurement; Degradation; Electrical resistance measurement; Electromagnetic measurements; Feedback; Frequency estimation; Stators; Torque control; Torque measurement; Voltage;
Conference_Titel :
Power Electronics and Motion Control Conference, 2000. Proceedings. IPEMC 2000. The Third International
Conference_Location :
Beijing
Print_ISBN :
7-80003-464-X
DOI :
10.1109/IPEMC.2000.885352
