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Flux-weakening control of permanent magnet synchronous motor with direct torque control consideration variation of parameters

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4 Author(s)
Junfeng Xu ; Coll. of Electr. Eng., Southwest Jiaotong Univ., Sichuan, China ; Fengyan Wang ; Jianghua Feng ; Jianping Xu

Flux-weakening control of interior permanent magnet synchronous motor (PMSM) is elaborated by presentation of current limit trajectory, speed limit trajectory and load angel limit trajectory. Flux-weakening control extends the timing range of the motor. For PMSM, flux-weakening is realized by armature reaction, which is different from induction motor by reducing the flux directly. In flux-weakening range, armature reaction will seriously affect the parameters such as rotor flux, direct axis inductance and quadrature axis inductance. The control trajectories mentioned above and performance of flux-weakening control with and without considering armature reaction are compared realized by MATLAB/SIMULINK. The rationality of theory analysis has been proved by simulation results.

Published in:

Industrial Electronics Society, 2004. IECON 2004. 30th Annual Conference of IEEE  (Volume:2 )

Date of Conference:

2-6 Nov. 2004