An Isolated Single-Phase Rectifier with Power Factor Correction

The paper presents an application example from the large family of the converters with the single-ended switch, or with forward converter. The forward converters with one switch are used for power applications up to 250W. The proposed rectifier construction with one switch and with power-factor correction is derivation from the buck (step down) converter. It also employs the principle of a boost (step up) power-factor-cell. The switching controller is based on that principle as well. The transformer and the output filter are used for galvanic isolation and for the storage of the electric charge. Obtained experimental results for the suggested scheme of 3500W isolated power supply are in good accordance with the simulation results. The comparison of results we have achieved and results reported in the literature confirms the advantage of the proposed rectifier scheme.