Abstract- In this paper, simulations of single – phase power
factor corrector (PFC) that has buck-boost circuit topology
under input – output linearization nonlinear control with
current and voltage control are realized. Buck-boost converter is
connected to ac grid by single phase diode bridge rectifier and it
works in boundary conduction mode (BCM). For switching of
single switched buck-boost converter, compared saw tooth with
dc control signal (PWM) technique has been utilized and
switching frequency adjusted to 100 kHz. Simulations are
carried out with Matlab/Simulink. By the simulations, the effect
of PFC buck-boost rectifier on unity power factor, line current
harmonic distortion, the sinusoidality of line current and dc –
link voltage are presented.