A unified approach to the design of resonant power factor correction circuits

It is shown that current-driven DC-to-DC resonant power converters can be utilized in designing resonant power factor correction circuits (RPFCCs). Depending on whether the energy stored in the tank circuit is programmable or not, the RPFCCs can be classified into two sets. The RPFCCs falling into the first set possess the potential to have both high power factor and fast output regulation, while the RPFCCs in the second set can only provide high power factor. Five control schemes for the RPFCCs based on the classification are presented. Design examples and computer simulations are also presented. >