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Please use this identifier to cite or link to this item: http://hdl.handle.net/2031/5909

Title: Single-step high-voltage high-efficient compact power converters for energy savings in modern public transport
Authors: Wang, Huai (王懷)
Department: Department of Electronic Engineering
Issue Date: Dec-2010
Award: Won the Third Prize in 2010 IEEE Hong Kong Section (Postgraduate) Student Paper Contest organized by IEEE Hong Kong Section.
Supervisor: Prof. Chung, Henry Shu Hung
Subjects: dc-dc conversion
high-voltage converter
zero-voltage-switching
multi-phase
current-multiplier rectifier
energy savings
Type: Article
Abstract: Electrifications of public transport in the last century have significantly reduced emissions, however, still suffered from low-efficient energy conversions. A single-step high voltage conversion concept is proposed to tackle the efficiency issue for on board applications in Trolley Buses, Trams, Metro and Light Rail. A general structure for a class of converters is analyzed from the perspectives of devices, topology, switching scheme and applications. The converters are featured with self-balanced voltages on input dc-link capacitors, low voltage stresses on switches, zero-voltage-switching (ZVS), high output current capability and compact size with high frequency operations. A prototype converting 1500V to 48V is designed and evaluated to verify the theoretical predictions.
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