Search for dissertations about: "Electrical Machines"

Showing result 11 - 15 of 249 swedish dissertations containing the words Electrical Machines.

  2. 11. Design, Modelling and Control of Electrical Machines - With Applications to Iron-powder Machines and Acoustic Noise

    Author : David Martinez; Industriell elektroteknik och automation; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; BEM; induction machine; noise prediction; vector control; acoustic noise; HEV; series magnetization; leakage reduction; thermal model; FEM; MEC; claw-poles; SMC; slip-ring-less machine; sound intensity measurements; vibration; Electrical engineering; Elektroteknik;

    Abstract : This thesis consists of two parts, the first dealing with the design of iron-powder synchronous machines, and the second with the analysis and prediction of the acoustic noise in electrical machines. In Part I, a 1.6 kW electrically magnetized claw-pole machine with magnetically conducting end-plates has been analyzed and a prototype tested. READ MORE

  4. 12. Electric Traction Machine Design for an E-RWD Unit

    Author : Francisco Marquez; Industriell elektroteknik och automation; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electric Traction Machines; Permanent Magnet Machines; Laminated Winding Machines; Hybrid Electric Vehicles; Electrical Machine Design; Electromagnetic Modeling; Thermal Modeling; Finite Element Analysis.;

    Abstract : Since the first generation of the Toyota Prius was introduced in December 1997, the number of Hybrid Electric Vehicles (HEVs) and pure Electric Vehicles (EVs) available in the market has increased substantially. The growing competition existent puts high demands on the electric system as well as the rest of the vehicle. READ MORE

  5. 13. Electrical Machine Development : a study of four different machine types from Swedish perspective

    Author : Sture Eriksson; Chandur Sadarangani; Konrad Reichert; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electronic measurement and instrumentation; Elektronisk mät- och apparatteknik;

    Abstract : Development and manufacturing of rotating electrical machines have been essential for the Swedish society and industry for more than a century. The dominating manufacturer has been Asea/ABB, even if a more diversified structure has emerged in recent years. READ MORE

  6. 14. Improving the functionality of synchronous machines using power electronics

    Author : Fredrik Evestedt; Urban Lundin; C. Johan. D. Abrahamsson; Jon Kjellin; Uppsala universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Power electronics; Synchronous machines; Excitation systems; Magnetic thrust bearing; Starting synchronous machines; Split rotor; Rotating electronics; Magnetic fields; Measurement systems; Unbalanced magnetic pull; Harmonics; Engineering Science with specialization in Science of Electricity; Teknisk fysik med inriktning mot elektricitetslära;

    Abstract : With the advent of modern power electronics there is reason to explore what can be achieved when it is applied to a mature technology like synchronous machines. In this text several concepts will be presented on how it is possible to control forces and how to get better performance out of synchronous machines by using power electronics. READ MORE

  7. 15. On analytical modeling and design of a novel transverse flux generator for offshore wind turbines

    Author : Dmitry Svechkarenko; Chandur Sadarangani; Waqas Arshad; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Transverse flux machines; permanent magnet machines; direct-driven gen- erator; offshore wind turbine; renewable energy; global warming; Electrical engineering; Elektroteknik;

    Abstract : The object of this thesis is to develop a cost effective direct-driven wind generator suited for offshore wind turbines. As the generator price is a complicated function dependent on many parameters, the emphasis is mainly put on reduction of the weight of active materials, such as copper, laminated steel, permanent magnets, and electrical insulation. READ MORE