ABSTRACT
An important requirement for the motor in the traction drive systems is to have a low peak electromagnetic torque ripple during operation in the high-speed range, a stable stator current, and a stable motor speed. This is not achieved if the inherent control strategy ignores the peak stator current ripple. There are many reasons for ripples in the induced torque, such as the arrangement of and relations between the parts or elements of the permanent magnet synchronous motor (PMSM) structure, the vibration of measured speed, and the large scan time of the closed-loop strategy. This chapter shows the optimum design of the stator current controller for the field-oriented control strategy to reduce the peak of the induced torque ripple coupled with the frequency modulation algorithm of the space vector pulse-width modulation technique for the voltage source power inverter. Finally, simulation and experiment results are discussed to verify the effectiveness of the advanced control strategy.
