A Single-Reset-Integrator-Based Implementation of Line-Current-Shaping Controller for High-Power-Factor Operation of Flyback Rectifier

Chattopadhyay, Souvik and Ramanarayanan, V (2002) A Single-Reset-Integrator-Based Implementation of Line-Current-Shaping Controller for High-Power-Factor Operation of Flyback Rectifier. In: IEEE Transactions on Industry Applications, 38 (2). 490 -499.

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Abstract

The objective of this paper is to present a simple yet accurate implementation of a resistor-emulator-type line-current-shaping controller for high-power-factor operation of a flyback rectifier. The important feature is that input voltage sensing is not required. In the circuit realization of the controller, no multiplier is used. Current shaping is performed directly on the input filter inductor current. The modulator uses only one reset integrator for the generation of duty ratio. The analysis presented in this paper shows the effect of input filter capacitance on discontinuous conduction mode of operation of the flyback inductor. Design equations for selection of the input filter components are derived. A low-frequency small-signal model of the rectifier is developed and verified by measurement up to 1 kHz. The performance of the controller is first tested by the SABER circuit simulator package. Then, a 100-W 110-V AC input 50-V DC output single-phase flyback rectifier prototype is built for experimental verification

Item Type:	Journal Article
Publication:	IEEE Transactions on Industry Applications
Publisher:	IEEE
Additional Information:	Copyright 1990 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Keywords:	Current-mode control;Discontinuous-conduction- mode operation;Flyback rectifier;High-power-factor rectifiers;Power-factor correction
Department/Centre:	Division of Electrical Sciences > Electrical Engineering
Date Deposited:	18 Jan 2006
Last Modified:	30 Jun 2011 09:12
URI:	http://eprints.iisc.ac.in/id/eprint/5025

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