Power factor correctors based on coupled-inductor Sepic and Cuk converters with nonlinear carrier control

This paper presents design of high performance power factor correctors based on coupled-inductor Sepic and Cuk converters operating in the continuous conduction mode. All inductive components are realized all tile same magnetic core and designed so that levels of switching-frequency ripples and conducted EMI are greatly reduced. Input-current shaping and output voltage regulation are accomplished using the nonlinear-carrier control technique, A Spice-compatible large-signal averaged model is introduced to facilitate computer-aided design verification. The design and the models are validated by experimental results on two power factor correctors based all the coupled-inductor Sepic and Cuk converters.