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Abstract
This paper with new multi-level unidirectional single-phase PFC rectifier topology is well-suited for
applications targeting high efficiency and/or high power density. The characteristics of a selected novel
rectifier topology, including its principles of operation, feedback control scheme, and a power circuit design
related analysis are presented which include remarkably low switching losses and single ac side, boost
inductor. To improve the characteristic and enable the use of higher switching frequencies, multilevel
converters can be employed to build power factor correction rectifier topologies. With the multi-level
topologies the losses are typically much lower since the voltage steps over the boost inductor are only one half
of the dc-link voltage. Thus, the inductance and the size of the boost inductor are reduced. This achieve high
power factor with reduced conduction and commutation losses which can be used for telecommunication applications. The reduction in conduction losses occurs because the proposed topology presents less power
semiconductors in the current path. Thus the efficiency of the proposed topology tends to be higher since
conduction losses will be lower.