Simulation of Single Phase Active Power Factor Pre Regulator

The objective of active power factor correction is to make the input to a power supply look like a simple resistor. An active power factor corrector does this by programming the input current in response to the input voltage. As long as the ratio between the voltage and current is a constant the input will be resistive and the power factor will be unity. When the ratio deviates from a constant, the input will contain phase displacement, harmonic distortion or both and either one will degrade the power factor. The most common definition of power factor is the ratio of real power to apparent power. A boost regulator is an excellent choice for the power stage of an active power factor corrector, because the input current is continuous and this produces the lowest level of conducted noise and the best input current waveform. The boost regulator input current must be forced or programmed to be proportional to the input voltage waveform for power factor correction. Feedback is necessary to control the input current and either peak current mode control or average current mode control may be used. Both techniques may be implemented with the UC3854. Dr. G. Madasamy "Simulation of Single Phase Active Power Factor Pre-Regulator" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-6 | Issue-7 , December 2022, URL: https://www.ijtsrd.com/papers/ijtsrd52594.pdf Paper URL: https://www.ijtsrd.com/engineering/electrical-engineering/52594/simulation-of-single-phase-active-power-factor-preregulator/dr-g-madasamy