A. C. INVERTER DRIVE WITH FIELD ORIENTED CONTROL AND OPTIMUM PWM STRATEGY

The PWM procedures which are minimizing the losses origining from the upper har- monic currents can be applied at field oriented controls as well. Though at the execution of the field oriented control there is no possibility for the sudden change of phase angle position of the voltage vector the time duration of the transient process and the quality characteristics of it equal practically at the accurate execution of field oriented control strategy