A Time-Based Control Scheme for Power Factor Correction Boost Converter

Abstract

A time-based control scheme for the power factor correction (PFC) boost rectifier is presented. Average-currentmode control in time is achieved using time-based compensators performing a proportional-integral control action. The controller is fully CMOS compatible, which allows for monolithic integration with the power switching elements. The time-based controller also eliminates the need for the pulse-width-modulation (PWM) generator required in the conventional analog and digital controllers. The proposed controller draws a sinusoidal input current in phase with the input mains voltage and delivers a dc output voltage. The control scheme model is verified on a 600 W PFC boost converter, achieiving a power factor of 0.99 and a 400 V dc output from a 230 Vrms 50 Hz input voltage.

Fractional fuzzy PI controller using particle swarm optimization to improve power factor by boost converter

“…Afterwards, the current flowing from the inductor is measured using the Rs and it is subtrachted from the reference current. This signal is used to control the MOSFET to get the output voltage as well as to for the PFC [3].…”

“…The voltage controller generates a signal which is transferred to the multiplier block. It multiplies the rectified voltage of circuit with the square of peak voltage of source 𝑣in 2 [3]. Then signal goes towards the current controller after subtracting from reference current.…”

“…Therefore, the less average power is transferred to load. Limits of power factor and input current harmonics are determined according to international standard IEC 61003-2 and IEE/ANSI519, respectively [3]. PFC correction circuits are widely used in the input part of electronic circuits to decrease the rective power drawn from the grid [4].…”