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

Chattopadhyay, Souvik and Ramanarayanan, V (2001) A Single Reset Integrator Based Implementation of Line Current Shaping Controller for High Power Factor Operation of Flyback Rectifier. In: Conference Record of the 2001 IEEE Industry Applications Conference, 2001. Thirty-Sixth IAS Annual Meeting, 30 September-4 October, Chicago, Vol.4, 2433 -2440.

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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 input voltage sensing is not required. In 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 (DCM) 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 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: Conference Paper
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: Power Factor Correction;High power factor rectifiers;Flyback rectifier;Current-mode control;DCM operation
Department/Centre: Division of Electrical Sciences > Electrical Engineering
Date Deposited: 16 Feb 2006
Last Modified: 30 Jun 2011 09:13
URI: http://eprints.iisc.ernet.in/id/eprint/5376

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