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Active Power Decoupling with Reduced Converter Stress for Single-Phase Power Conversion and Interfacing

Bhowmick, Sujata and Umanand, L (2015) Active Power Decoupling with Reduced Converter Stress for Single-Phase Power Conversion and Interfacing. In: National Power Electronics Conference (NPEC), December 21- December 23 , 2015, IIT Bombay.

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Single-phase DC/AC power electronic converters suffer from pulsating power at double the line frequency. The commonest practice to handle the issue is to provide a huge electrolytic capacitor for smoothening out the ripple. But, the electrolytic capacitors having short end of lifetimes limit the overall lifetime of the converter. Another way of handling the ripple power is by active power decoupling (APD) using the storage devices and a set of semiconductor switches. Here, a novel topology has been proposed implementing APD. The topology claims the benefit of 1) reduced stress on converter switches 2) using smaller capacitance value thus alleviating use of electrolytic capacitor in turn improving the lifetime of the converter. The circuit consists of a third leg, a storage capacitor and a storage inductor. The analysis and the simulation results are shown to prove the effectiveness of the topology.

Item Type: Conference Paper
Additional Information: Copyright of this article belongs to the NATIONAL POWER ELECTRONICS CONFERENCE 2015 (NPEC 2015), IIT BOMBAY, INDIA, DEC 21
Keywords: single-phase, double frequency ripple, Active power decoupling, reduced stress, reliability
Department/Centre: Division of Electrical Sciences > Electronic Systems Engineering (Formerly Centre for Electronic Design & Technology)
Date Deposited: 10 Dec 2015 05:44
Last Modified: 07 Jan 2016 05:04
URI: http://eprints.iisc.ac.in/id/eprint/52830

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