Search for dissertations about: "high frequency power"
Showing result 1 - 5 of 707 swedish dissertations containing the words high frequency power.
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1. Evaluation of different topologies for high-power dc-dc converters
Abstract : .... READ MORE
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2. High Efficiency Inductive Power Transfer Systems for Vehicle Charging
Abstract : Awareness of climate change due to greenhouse gas emissions and air pollution has led to a transition from internal combustion engine vehicles to electric vehicles. Wireless charging by inductive power transfer is a promising solution for charging electric vehicles. READ MORE
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3. Integration of Non-synchronous Generation - Frequency Dynamics
Abstract : Traditionally the predominant generation has been large synchronous generators providing the system inertia. Nowadays when wind power and other non-synchronously connected units displaces this synchronous generation, the system inertia is reduced. Hence higher rate of change of frequency and larger frequency deviations are expected. READ MORE
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4. Frequency response by wind farms in power systems with high wind power penetration
Abstract : The integration of variable speed wind turbines (VSWT) in power systems is increasing in order to reduce the emission of green house gases. This increase of power electronic converter interfaced generation causes a decrease of power system inertia, increasing the risk of load shedding and system frequency instability. READ MORE
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5. High-Efficiency SiC Power Conversion : Base Drivers for Bipolar Junction Transistors and Performance Impacts on Series-Resonant Converters
Abstract : This thesis aims to bring an understanding to the silicon carbide (SiC) bipolar junction transistor (BJT). SiC power devices are superior to the silicon IGBT in several ways. They are for instance, able to operate with higher efficiency, at higher frequencies, and at higher junction temperatures. READ MORE