Linear peak current mode control: a simple active power factor correction control technique for continuous conduction mode

2002 ◽  
Author(s):  
J.P. Gegner ◽  
C.Q. Lee
Keyword(s):  
Power Factor ◽  
Power Factor Correction ◽  
Current Mode ◽  
Active Power ◽  
Control Technique ◽  
Peak Current ◽  
Current Mode Control ◽  
Mode Control ◽  
Conduction Mode ◽  
Continuous Conduction Mode

scholarly journals Fixed off Time Based Power-Factor Correction for AC-DC Converter

2020 ◽  
Vol 9 (3) ◽  
pp. 2232-2238
Keyword(s):  
Power Factor ◽  
Duty Cycle ◽  
Power Factor Correction ◽  
Current Mode ◽  
Boost Converter ◽  
Control Technique ◽  
Mode Tm ◽  
Off Time ◽  
Conduction Mode ◽  
Continuous Conduction Mode

The conversion of A.C to D.C determines the distortion of the mains current A.C., which degrades the input power factor. The main reason for a poor power factor is the non-linear nature of the circuit. In this paper power factor is improved by using a basic boost converter and a control technique based on the fixed off time(FOT) approach .The traditional approach to the correction of the power factor in the boost converter is the continuous conduction mode with fixed frequency (FF-CCM) and the transition mode (TM) PWM (fixed connection time, variable frequency). In the first mode, the inductor operates in continuous conduction mode (CCM) and uses the average current-mode control mode; a complex technique involves a considerable number of components. The second method uses the more complex control technique of the peak current mode that makes the inductor work between continuous and discontinuous mode, which uses fewer components, unstable greater than 50% duty cycle and is more cost efficient. A third approach, the fixed off time (FOT) is gaining popularity which is conditionally stable for a duty cycle of over 50% and does not need compensation. The paper work carried out to use the power factor correction (PFC) based on DC-DC Flyback converter. To verify the design and operation of the circuit, the simulation is performed in PSIM .A prototype is developed and results are presented.

A Digital Peak Current-Mode Control PFC with Bifurcation Control

2013 ◽  
Vol 300-301 ◽  
pp. 1419-1422
Author(s):  
Chung Wen Hung ◽  
Li Sheng Zhang ◽  
Lung Chu Lu
Keyword(s):  
Power Factor ◽  
Control Method ◽  
Harmonic Oscillation ◽  
Current Mode ◽  
Bifurcation Control ◽  
Peak Current ◽  
Current Mode Control ◽  
Mode Control ◽  
Bifurcation Behavior ◽  
Peak Current Mode Control

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.

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

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

<p class="Abstract"><span>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. <br />Keyword</span></p>

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