Title :
Performance comparison of feedback linearised controller with PI controller for PMSM speed regulation
Author :
Rajaram, S. ; Panda, S.K. ; Sang, Lock Kai
Author_Institution :
Dept. of Electr. Eng., Nat. Univ. of Singapore, Singapore
Abstract :
The performance of a feedback linearised (FBL) controller is compared with a 3 loop proportional plus integral (PI) controller for the speed control of a permanent magnet synchronous motor (PMSM). The performance of each controller is evaluated by studying the transient speed response to step changes in reference speed. A flux weakening algorithm is adopted to compare the performance of each controller during operation in the highly nonlinear constant power region. The sensitivity of each controller to changes in motor parameters is investigated. A discrete time implementation of the FBL controller is simulated. The effect of inaccuracy in the estimation of the rotor acceleration on the performance of the FBL controller is discussed. A speed and load torque observer is simulated for estimation of the speed and acceleration and the performance of the digital FBL controller with this observer is predicted
Keywords :
control system analysis; controllers; digital control; feedback; machine control; observers; permanent magnet motors; power engineering computing; rotors; synchronous motors; two-term control; velocity control; 3 loop proportional plus integral controller; PI controller; controller sensitivity; digital controller; discrete time; feedback linearised controller; flux weakening algorithm; load torque observer; nonlinear constant power region; permanent magnet synchronous motor; rotor acceleration; speed control; speed observer; transient speed response; Acceleration; Feedback loop; Linear feedback control systems; Permanent magnet motors; Pi control; Predictive models; Proportional control; Rotors; Synchronous motors; Velocity control;
Conference_Titel :
Power Electronics, Drives and Energy Systems for Industrial Growth, 1996., Proceedings of the 1996 International Conference on
Conference_Location :
New Delhi
Print_ISBN :
0-7803-2795-0
DOI :
10.1109/PEDES.1996.539642
