Print Email Facebook Twitter A modular DC/DC converter using SiC switches for railway applications Title A modular DC/DC converter using SiC switches for railway applications Author Mostert, E. Contributor Popovic, J. (mentor) Faculty Electrical Engineering, Mathematics and Computer Science Department Electrical Sustainable Energy Programme MSc Electrical Engineering - Electrical Sustainable Energy track Date 2017-01-30 Abstract Electrical trains are fed with a high voltage to reduce transmission losses. In the train, these voltages have to be stepped down to a voltage that could be fed into the traction motors. This is done with IGBT based power converters. The use of IGBTs in power converters has some disadvantages: they generate a lot of heat and are therefore not suitable for high-frequency operation. Developing power modules for electrical traction also has an other disadvantage: there is no standard electrification voltage. So for every customer a new converter has to be developed. These problems could be solved by using silicon carbide (SiC) based high voltage switches in a modular converter. The SiC switches enable high-frequency operation at high voltages and thus the reduction of the converter size. In a modular converter, multiple modules could be connected in series and/or parallel in such a way that the input voltage and output current is divided equally among the modules. During this thesis project, a SiC based modular converter was designed, build and evaluated. Subject silicon carbidesicrailwaytractionmodular converterisop To reference this document use: http://resolver.tudelft.nl/uuid:39477f23-a168-4648-9710-a43ac5dc9e92 Embargo date 2018-01-30 Part of collection Student theses Document type master thesis Rights (c) 2017 Mostert, E. Files PDF Thesis report Erwin Moste ... 177274.pdf 18.97 MB Close viewer /islandora/object/uuid:39477f23-a168-4648-9710-a43ac5dc9e92/datastream/OBJ/view