Search for dissertations about: "induction machines"
Showing result 1 - 5 of 33 swedish dissertations containing the words induction machines.
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1. Thermal Analysis and Management of High-Performance Electrical Machines
Abstract : This thesis deals with thermal management aspects of electric machinery used in high-performance applications with particular focus put on electric machines designed for hybrid electric vehicle applications.In the first part of this thesis, new thermal models of liquid (water and oil) cooled electric machines are proposed. READ MORE
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2. Study of Induction Machines with Rotating Power Electronic Converter
Abstract : This thesis investigates a novel induction machine topology that uses a rotating power electronic converter. Steady-state and dynamic performance of the topology is studied to understand its operational principle. Furthermore the potential of improving its efficiency and power factor is investigated. READ MORE
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3. Analysis and Control Aspects of Brushless Induction Machines with Rotating Power Electronic Converters
Abstract : This thesis deals with the steady-state, dynamic and control aspects of new type of brushless configuration of a doubly-fed induction machine in which the slip rings and carbon brushes are replaced by rotating power electronics and a rotating exciter. The aim is to study the stability of this novel configuration of the generator under mechanical and grid disturbances for wind power applications. READ MORE
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4. Measurements and Modelling of Low-frequency Disturbances in Induction Machines
Abstract : in this thesis the low-frequency dynamic behavior of the induction machine is analyzed. disturbances in the shaft torque and supply voltage are investigated theoretically, The calculated response to shaft torque disturbances is verified with measurements on a 15 kW machine. READ MORE
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5. Analysis and Reduction of Parasitic Effects in Induction Motors With Die-Cast Rotors
Abstract : This thesis presents a study of inter-bar current effects on induction motors with die-cast aluminium and die-cast copper rotors. The parasitic effects introduced by these currents are analyzed and possible solutions to these problems are presented. This is realized by developing analytical tools for the simulation of inter-bar current effects. READ MORE