Flyback-forward power factor correction circuit with line-frequency ripple suppression

2002 ◽  
Vol 149 (6) ◽  
pp. 474 ◽  
Author(s):  
T.-J. Liang ◽  
T.-H. Ai ◽  
J.-F. Chen
Keyword(s):  
Power Factor ◽  
Power Factor Correction ◽  
Line Frequency

scholarly journals Line Frequency Instability of One-Cycle-Controlled Boost Power Factor Correction Converter

Electronics ◽  
2018 ◽  
Vol 7 (9) ◽  
pp. 203 ◽  
Author(s):  
Rui Zhang ◽  
Wei Ma ◽  
Lei Wang ◽  
Min Hu ◽  
Longhan Cao ◽  
...  
Keyword(s):  
Power Factor ◽  
Power Factor Correction ◽  
Second Harmonic ◽  
Harmonic Component ◽  
Input Voltage ◽  
Frequency Instability ◽  
Control Circuit ◽  
Line Frequency ◽  
Control Loops ◽  
Non Linear

Power Factor Correction (PFC) converters are widely used in engineering. A classical PFC control circuit employs two complicated feedback control loops and a multiplier, while the One-Cycle-Controlled (OCC) PFC converter has a simple control circuit. In OCC PFC converters, the voltage loop is implemented with a PID control and the multiplier is not needed. Although linear theory is used in designing the OCC PFC converter control circuit, it cannot be used in predicting non-linear phenomena in the converter. In this paper, a non-linear model of the OCC PFC Boost converter is proposed based on the double averaging method. The line frequency instability of the converter is predicted by studying the DC component, the first harmonic component and the second harmonic component of the main circuit and the control circuit. The effect of the input voltage and the output capacitance on the stability of the converter is studied. The correctness of the proposed model is verified with numerical simulations and experimental measurements.

High Efficiency Bridgeless Interleaved Power Factor Correction By Using Conversion Circuit

2014 ◽  
Vol 2 (3) ◽  
pp. 17-24
Author(s):  
V. Ramesh ◽  
◽  
K. Reddy Swathi ◽  
R. Lokeswar Reddy ◽  
E. Venkatachalapathi ◽  
...  
Keyword(s):  
Power Factor ◽  
High Efficiency ◽  
Power Factor Correction
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