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Showing result 1 - 5 of 28 essays matching the above criteria.
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1. 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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2. Development of a High Current Charger for Small Electric Boat Commuting
University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)Abstract : Electrification of the transport system is an important societal project which we are currentlyundergoing. With improvements in battery technology it is now possible to construct quite powerfulpersonal vehicles to replace combustion engines in not only cars but also motorcycles and boats. READ MORE
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3. Numerical study of a jet impacting a heated object
University essay from Karlstads universitet/Institutionen för ingenjörs- och kemivetenskaper (from 2013)Abstract : Heat transfer brought about by impinging jets is common in several industrialapplications such as the cooling of heated objects. The purpose of this investigationis to create a numerical model of an impacting jet, then to use it in parametricresearch and in the cooling of an electronic device. READ MORE
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4. Convolutional-LSTM for IGBTs Prognostics and Age Monitoring : Designing a neural network for predicting aging precursors in power devices
University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)Abstract : In recent years, extensive research efforts have been dedicated to the field of prognostics and age-related degradation, with major focus on higher complexity devices. However, relatively little attention has been given to power devices, such as Insulated Bipolar Gate Transistors (IGBTs), despite their critical role in high power electronic applications. READ MORE
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5. Analysis and Performance Evaluation of a Three-phase Three-level Sparse Neutral Point Clamped Converter for Industrial Variable Speed Drives
University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)Abstract : This thesis project focuses on the simulation, design, hardware realization, and performance evaluation of a Three-phase Three-level (3-L) Sparse Neutral Point Clamped Converter (SNPCC) for Industrial Variable Speed Drives (VSDs). The basic operating principle of the SNPCC is briefly described based on switching functions. READ MORE