A single-phase buck-type unity power factor rectifier is a power electronic device used to convert alternating current (AC) voltage to direct current (DC) voltage while maintaining a unity power factor. Unity power factor means that the input current waveform closely follows the voltage waveform, minimizing distortion and maximizing the utilization of the AC power source. The buck-type topology is commonly employed in such rectifiers.
Here's how the operation of a single-phase buck-type unity power factor rectifier works:
AC Input Stage: The rectifier starts with an AC input voltage, typically from the grid or a similar source. This AC voltage is fed into a diode bridge rectifier or a similar arrangement that converts the AC voltage