Search for dissertations about: "high voltage"
Showing result 1 - 5 of 812 swedish dissertations containing the words high voltage.
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1. Towards Low-Voltage, High-Current : A pioneering drive concept for battery electric vehicles
Abstract : The first electric low-voltage vehicles were constructed in the mid-19th century, but by the early 20th century they were progressively replacedby successors with internal combustion engines. As the consequences ofusing fossil fuels are better understood, our society is now transitioning back. READ MORE
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2. On high-frequency soft-switching DC-converters for high-voltage applications
Abstract : .... READ MORE
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3. Silicon-Carbide-Based High-Voltage Submodules for HVDC Voltage-Source Converters
Abstract : In order to transition to renewable energy sources and simultaneously meet the increasing demand for electrical energy, highly flexible and efficient grids are required. High-voltage direct-current (HVDC) transmission and grids are foreseen to be a vital part of the future electricity grid. READ MORE
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4. Thermoplastic Insulation for High Voltage Cables
Abstract : High voltage direct current (HVDC) cables that seamlessly integrate renewables have an important contribution to the modern world’s efforts towards a more sustainable future. Extruded HVDC cables that efficiently and reliably transport electricity require robust insulation materials with good thermomechanical and dielectric properties. READ MORE
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5. Charge Accumulation in Hybrid High Voltage Insulation
Abstract : This thesis deals with the novel idea of controlling the electric stress or field distribution in a hybrid air - solid-dielectric high voltage insulation by promoting accumulation of surface charges on the internal interfacial layers in the combined (hybrid) dielectric structure. Primarily, applications are expected to be found in high voltage dc systems and as a method to improve the resistance against insulation failure by overvoltages, e. READ MORE
