Abstract
ABSTRACT A PWM strategy is developed to eliminate harmonics of the quasirectangular phase currents of two-phase feeding, self-synchronous motor that interact with the fundamental component of airgap flux to produce pulsating torques in the frequency range of mechanical response when the motor is driven through a midpoint, three-pulse cycloconverter under synchronous envelope control. After establishing the necessary PWM regime, an example is presented wherein harmonic content of phase currents and developed torque are calculated with and without modulation of phase voltages to verify the effectiveness of torque pulsation reduction and to assess the ohmic loss penalty incurred.
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