Essays about: "bipolar switching"
Found 5 essays containing the words bipolar switching.
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1. AC Gate Bias Stress of 4H-SiC MOSFETs : An investigation into threshold voltage instability of SiC Power MOSFETs under the influence of bipolar gate stress
University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)Abstract : Silicon Carbide, a wide band gap (WBG) semiconductor, has pushed electrical limits beyond Silicon (Si) when it comes to power electronics. It has offered the electrification of society showing promise for a greener future. READ MORE
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2. A Novel Two-Level Inverter Design for Efficient Energy Conversion in a Maglev Train Rail
University essay from Högskolan i Halmstad/Akademin för informationsteknologiAbstract : This report covers the construction of a prototype inverter system designed to power the rail of a maglev train, from component selection through simulations and power demands to mounting and wiring the components into a cabinet. The inverter is made with insulated gate bipolar transistors controlled with pulse-width modulated signals provided by a custom microcontroller. READ MORE
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3. Implementation of Nodes in HVDC Grids
University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)Abstract : This project is made for a deeper understanding ofhow frequency and amplitude of the waves that create the controlwave in a Pulse Width Modulated 2-level inverter affect the powerquality and power losses. The results were that a high frequencyreduces the Total Harmonic Distortion but increases the powerloss. READ MORE
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4. Maximum Inverter AC Current Prediction Based on Junction Temperature Calculation
University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)Abstract : Semiconductor devices are widely used in the automotive industry, and they are key components of the inverter and the converter in an electric vehicle. Thus, the concern of protecting the inverter and the converter from damaging operation has been raised. The junction temperature is one of the main considerations. READ MORE
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5. IGCT Transient Analysis and Clamp Circuit Design for VSC valves
University essay from KTH/Elektrisk energiomvandlingAbstract : In today’s high power VSCs (Voltage Source Converters), IGBTs (Insulated Gate Bipolar Transistors) are the dominant semiconductors. These converters are in general modular multilevel based and contain several building blocks that are series connected. Each of these building blocks in turn consist of several series connected IGBT valves. READ MORE