Search for dissertations about: "drives"
Showing result 21 - 25 of 390 swedish dissertations containing the word drives.
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21. Synchronous Reluctance Machine (SynRM) in Variable Speed Drives (VSD) Applications
Abstract : This thesis is comprehensively dedicated to the theoretical and experimental reevaluation of the Synchronous Reluctance Machine (SynRM). A simple approach to derive the SynRM main characteristics and behavior is followed. An introduction to an evaluation of the different control strategies in is given. READ MORE
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22. Design and Control of Electrically Excited Synchronous Machines for Vehicle Applications
Abstract : Electrically excited synchronous machines (EESMs) are becoming an alternative to permanent magnet synchronous machines (PMSMs) in electric vehicles (EVs). This mainly attributes to the zero usage of rare-earth materials, as well as the ability to achieve high starting torque, the effectiveness to do field weakening and the flexibility to adjust power factor provided by EESMs. READ MORE
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23. On sensorless control of induction motor drives at low stator frequencies
Abstract : .... READ MORE
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24. Energy Management and Control of Electrical Drives in Hybrid Electrical Vehicles
Abstract : Hybrid vehicles have attracted tremendous attention during the last years. Increasing environmental concern and a steady increase in fuel prices are key factors for the growing interest. READ MORE
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25. On SiC JFET converters: components, gate-drives and main-circuit conditions
Abstract : This thesis deals with Silicon Carbide Junction Field Effect Transistors (SiC JFETs) - how to use them to their full potential in power electronic circuits, how to model them in a power electronic simulation program, and how a gate drive can be built. To fully utilize the low on-state losses of SiC JFETs it is suggested that SiC JFETs should not be equipped with anti-parallel diodes. READ MORE