Mobile QR Code QR CODE : The Korean Institute of Power Electronics
Title A Study on the ZVS Full Bridge Converters using the New Integrated Magnetics Transformer
Authors Tae-Young Ahn ; Sang-Cheol Bong ; Don-Sik Kim
Page pp.396-402
ISSN 1229-2214
Keywords IM transformer; ZVS; Full bridge converter; Phase shift control; Integrated magnetics
Abstract This paper proposes a novel fault diagnosis method of a electrolytic capacitor used for DC-link voltage smoothing in adjustable speed drives. The equivalent series resistance (ESR) of the electrolytic capacitor is directly estimated from DC-link voltage and load currents and the status of the electrolytic capacitor is determined from the estimated ESR. To compensate the variation of the ESR owing to temperature variation, diodes are located on the same PCB near the capacitor and the temperature of the capacitor is sensed indirectly from the voltage drop of diodes. Simulation and experimental studies show the effectiveness of the proposed method.