Search for dissertations about: "turn-off"
Showing result 1 - 5 of 23 swedish dissertations containing the word turn-off.
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1. Compact Modeling of Si and SiC Power Diodes
Abstract : .... READ MORE
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2. A new Auxiliary Converter Topology with SiC Components for Railway Applications
Abstract : Smaller size and lower weight are always the targets of the power electronic product development. This work introduces two new topologies of auxiliary converters which have the feature of fewer components and fewer number of energy conversion stages comparing with the conventional auxiliary converter used in railway applications. READ MORE
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3. On small-signal analysis and control of the single- and the dual-active bridge topologies
Abstract : High-frequency dc-dc converters are nowadays widely used in a diversity of power electronic applications. High operating frequencies entail a reduction in size of the passive components, such as inductors, capacitors and power transformers. READ MORE
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4. On the design of hybrid DC-breakers consisting of a mechanical switch and semiconductor devices
Abstract : The interest of using direct current in networks for both transmission and distribution of power is increasing due to the higher efficiency compared to the alternating current used today. As no natural zero crossings exist in direct current, the interruption of fault currents becomes a challenge. READ MORE
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5. Three-Dimensional Modelling and Inversion of DC resistivity and Time Domain EM data using Multi-Resolution Framework
Abstract : 3-D forward modelling and inversion techniques play an important role in data interpretation, but they are still computationally challenging tasks. Therefore, this thesis aims to improve forward modelling and inversion performance using novel multi-resolution (MR) grid approach. READ MORE