ROM-based current controller for three-phase boost-type AC/DC converter

A rather simple ROM-based current controller is proposed for a three-phase boost-type AC/DC converter to achieve a clean sinusoidal input current, con trollable power factor, an adjustable DC voltage, a bidirectional power flo w capability, a fixed switching frequency and one insensitive to input volt age distortion. Three control schemes are proposed and integrated in the sa me controller. As well as the basic scheme, there are a further two choices for either reducing almost half the switch loss or enhancing the availabil ity of the converter, while one arm of the converter fails. A prototype is constructed, and experimental results validate the simulated results.