Digitally controlled single-phase converter supplying three-phase inverter driven induction motor

This dissertation investigates a new active rectifier and inverter link control scheme driven induction motor for residential applications.; A microprocessor based closed loop digital controller measures input signals to control the ac line current to be sinusoidal and in-phase with ac source voltage. The controller also provides a voltage regulation loop to control dc bus voltage. The active rectifier parameter optimization is performed to minimize boost inductance and dc bus voltage. A programmed pulse width modulationed (PWM) control scheme is proposed to control the three phase output voltages with low THD sinusoidal waveforms.; Digital computer simulations are performed to demonstrate the performance of the active rectifier and the three phase inverter with a proposed control scheme. A deadbeat controlled PWM control scheme is compared with the proposed PWM algorithm for the three phase inverter.