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Title:Design and implementation of a 1.3 KW, single-phase, seven-level, GaN AC-DC converter
Author(s):Moon, Intae
Contributor(s):Pilawa-Podgurski, Robert
Degree:B.S. (bachelor's)
Subject(s):AC-DC converters
galium-arsenide converters
Abstract:In today's world, electrical energy meets an increasing amount of the world's power needs as more countries are transitioning from traditional energy sources such as fossil fuels to renewable energy sources. The importance of power electronics has substantially increased due to their key roles in harnessing and delivering energy efficiently from renewable energy sources. As many modern applications of power electronics such as renewable energy harnessing, electric vehicle, and data center energy management require high-performance power electronics, innovative approaches to more robust, smaller, and efficient power converters are in great demand. This work presents detailed design process and hardware implementation of 1.3 kW, 90-264 Vrms (60 Hz) to 400 VDC converter. As a part of the trend in power electronics, the proposed converter features an innovative topology optimized for size miniaturization and high efficiency: a seven-level flying capacitor multilevel design with gallium nitride MOSFETs operating at 120 kHz. The converter is currently in competition for the IEEE International Future Energy Challenge 2016. It has achieved over 96% conversion efficiency at about 300 W output power. The development of fully functional power factor correction and digital control is in steady progress. With the sophisticated digital control and heat sink for better heat dissipation, this converter is projected to have a power density greater than 2 W/cubic-cm (32.8 W/cubic-inch) with over 98% efficiency.
Issue Date:2016-05
Date Available in IDEALS:2016-08-29

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