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This paper presents the speed control of permanent magnet synchronous motor with salient poles based on two-step linearization method. In the first step, the direct compensation of the nonlinearities in the equations of current is used. In the second step, the input-output linearization in the state space is used for the decoupling of flux and torque axis. Simulated results are compared to the field oriented vector control structure with PI controllers in order to show differences in the performance of both approaches. Keywords:nonlinear control, permanent magnet synchronous machine, feedback linearization, transformation matrix, nonlinear canonical form

Nonlinear Speed Control of Permanent Magnet Synchronous Motor with Salient Poles