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Electrical energy distribution with dc grids reduces the investment costs of the system and increases the overall efficiency. For interconnecting different dc distribution grids as well as linkage to transmission networks and integration of renewable energy sources, the dual-active bridge (DAB) dc-dc converter system is a promising topology. Modularity and scalability improve production and reduce...
This work presents a flexible thermal modeling methodology for power semiconductor modules. It allows time efficient simulation of temperature cycling for different module designs and operation profiles. To keep the model compact and flexible as well as accurate, the solid state heat conduction paths of the power modules are modeled by a 3D finite difference model. It is combined with an analytical...
Market liberalization has significantly changed the energy supply system in Europe, i.e. from a top-down centralized power generation system towards a more decentralized system. In addition, partially due to incentive programs, vast amounts of renewable power generator systems (mostly wind and PV) have been installed. More flexible grid structures are needed to cope with this new landscape of distributed...
The increasing use of renewable resources such as wind and solar energy requires robust power converters for feeding energy into the grid. However, conventional power converters, including coupled Integrated Gate Commutated Thyristors (IGCTs), are sensitive to temperature changes and vibrations. To decouple the thyristor from the driver, an Integrated Emitter Turn-Off device (IETO) had been presented...
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