Research on a Bridgeless PFC Topology in Space Nuclear Power System

A new topology of bridgeless PFC converter is proposed and related operating principles is analyzed as well. State space modeling approach is applied to investigate performance of proposed converter based on continuous current mode. The controller parameters are determined through theoretical design and mathematical derivation of voltage loop and current loop. Control strategy and transient response of converter are verified in Plecs which achieves zero-phase and sinusoidal tracking between input current and input voltage. A 2.5kW bridgeless PFC prototype is developed and experimental results demonstrated the design of proposed topology and control strategy is able to achieve power factor correction.