Open AccessAn Improved Power Factor Correction with Control of Leakage Inductance
Author(s) -
V Divyasri Sudharani and K Sabarinath
Publication year - 2020
Publication title -
international journal of modern trends in science and technology
Language(s) - English
Resource type - Journals
ISSN - 2455-3778
DOI - 10.46501/ijmtst061003
Subject(s) - power factor , switched mode power supply , electrical engineering , inductor , inductance , transformer , leakage inductance , constant power circuit , capacitor , electronic engineering , ac power , computer science , voltage , engineering
Nowadays the use of electronic equipment finds a progressive development in the modern world. Hence itbecomes a mandate to check whether the harmonic content of line current of any electronic device which isconnected to the ac supply meets the appropriate standards. This demand is satisfied by implementing thePower Factor Correction (PFC) circuit in order to make the input current to be in sinusoidal in nature andin-phase with the input voltage. Numerous solutions are available to make the line current almost sinusoidal.This paper describes an isolated power factor corrected power supply that utilizes the leakage inductance ofthe isolation transformer to provide boost inductor functionality. The bulk capacitor is in the isolated part ofthe power supply allowing for controlled startup without dedicated surge limiting components. A controlmethod based on switch timing and input/output voltage measurements is developed to jointly achievevoltage regulation and input power factor control.