A pulse frequency control(PFM) method for single-phase SEPIC-type rectifier is described in this paper. In the SEPIC rectifier, a
relationship between the output power and the respective switching frequency is investigated to establish the control scheme of PFM.
The proposed control method is provided with a feed-forward control loop of the output load as well as a feed-back control loop of
the output voltage. The simulation results show good dynamic responses and unity power-factor operation.
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