The single-phase buck PFC converter has several advantages, such as no lower-limit of the output-voltage control range and no rush-current of the input-current. However, the buck converter requires the LC-filter connected in the ac-side of the converter to absorb the switching frequency harmonics. The LC-filter causes an LC resonance in transient states. To solve this, the authors propose a suppression approach using the Band Reject Filter (BRF) for the single-phase buck PFC converter. To illustrate the validity of the theory, experimental results obtained from a 1.0 [kW] setup are shown.
