An unified approach to predictive transition current mode control for digital-controlled power factor corrector

A boost power factor correction (PFC) in continuous conduction mode (CCM) by the digital peak current-mode control method with bifurcation control is discussed in this paper. The proposed method is used to prevent the inductor current bifurcation behavior, which is caused by sub-harmonic oscillation when the duty cycle is upon to 50 percent. The bifurcation behavior will increase the inductor current ripple and dissipation, then reduce the Power Factor (PF). Different from the ramp compensation signal performed with analog IC in some papers, a MCU is used to be the controller and also provides the digital compensation function in this paper. With the timer, ADC, PWM, and comparator which are built in the MCU, the necessary parameters will be measured without extra components and additional cost. The proposed method is based on those parameters. In this paper, the MATLAB/Simulink simulation results show the proposed method workable.

Download Full-text

Average current mode control of two-input buck post-regulators used in power factor correctors

PESC97. Record 28th Annual IEEE Power Electronics Specialists Conference. Formerly Power Conditioning Specialists Conference 1970-71. Power Processing and Electronic Specialists Conference 1972 ◽

10.1109/pesc.1997.616667 ◽

2002 ◽

Cited By ~ 7

Author(s):

P.J. Villegas ◽

J. Sebastian ◽

M.M. Hernando ◽

F. Nuno

Keyword(s):

Power Factor ◽

Current Mode ◽

Current Mode Control ◽

Mode Control ◽

Average Current ◽

Average Current Mode Control

Download Full-text

Design and Implementation of Single Phase AC-DC Buck-Boost Converter for Power Factor Correction and Harmonic Elimination

International Journal of Power Electronics and Drive Systems (IJPEDS) ◽

10.11591/ijpeds.v7.i3.pp1004-1011 ◽

2016 ◽

Vol 7 (3) ◽

pp. 1004

Author(s):

Damodaran Jayahar ◽

R. Ranihemamalini ◽

K. Rathnakannan

Keyword(s):

Power Factor ◽

Single Phase ◽

Power Factor Correction ◽

Current Mode ◽

Pi Controller ◽

Boost Converter ◽

Current Mode Control ◽

Mode Control ◽

Average Current ◽

Average Current Mode Control

This paper discusses the Power Factor Correction (PFC) for single phase ACDC Buck-Boost Converter (BBC) operated in Continuous Conduction Mode (CCM) using inductor average current mode control. The proposed control technique employs Proportional-Integral (PI) controller in the outer voltage loop and the Inductor Average Current Mode Control (IACMC) in the inner current loop for PFC BBC. The IACMC has advantages such as robustness when there are large variations in line voltage and output load. The PI controller is developed by using state space average model of BBC. The simulation of the proposed system with its control circuit is implemented in MatLab/Simulink. The simulation results show a nearly unity power factor can be attained and there is almost no change in power factor when the line frequency is at various ranges. Experimental results are provided to show its validity and feasibility. Keyword

Download Full-text