Search for dissertations about: "control winding"

Showing result 16 - 20 of 27 swedish dissertations containing the words control winding.

  2. 16. Family caregiving, a long and winding road. Aspects on burden and life satisfaction among caregivers from the general population study 'Good Aging in Skåne' and effects of psychosocial intervention

    Author : Beth Dahlrup; Geriatrik; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Health economic analysis; intervetion; quality of Life; Life satisfaction; Caregiver burden;

    Abstract : With an aging population and a reduction in social services provided by the municipality, a huge majority of us will take care of elderly family members, relatives and friends in need of assistance. How will this affect our lives? Approximately 20% of the adult population in Sweden, mainly middle-aged persons, identify themselves as family caregivers. READ MORE

  4. 17. Studies of high-temperature superconducting tapes and their application in power apparatus

    Author : Torbjörn Wass; Sven Hörnfeldt; Runde Magne; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; electrocity physics; magnetism; electronics engineering; electrical engineering; Electrical engineering; Elektroteknik;

    Abstract : Intensive development in the field of high-temperature superconductors (HTS) has resulted in long length HTS with high current carrying capacity. The performance of HTS in the form of multifilamentary silver sheathed Bi-2223 tapes is close to the requirements for power application. READ MORE

  5. 18. 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

  6. 19. Condition Monitoring of Stator Windings with a Networked Electric Drive

    Author : Giovanni Zanuso; Viktória Fodor; Luca Peretti; Antonio Griffo; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Industry 4.0; condition monitoring; multi-drive systems; EtherCAT; CAN; stator interturn faults; stator insulation; accelerated aging.; Electrical Engineering; Elektro- och systemteknik;

    Abstract : Electric drives are widely used in industry, where they are also part of the plant communication architecture. This architecture is challenged by the Industry 4.0 initiative that aims to make the devices in industrial plants more interconnected and with additional functionalities. READ MORE

  7. 20. Long-term Voltage Stability in Power Systems - Alleviating the Impact of Generator Current Limiters

    Author : Stefan Johansson; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; rotor thermal overloading; dynamic load modelling; voltage stability; field current limiter; active power rescheduling; overexcitation limiter; armature current limiter; long-term power system dynamic stability;

    Abstract : The main issues in this dissertation are the behaviour of current limiters protecting synchronous generators, and the interactions that occur with other components in the power system during a voltage instability. The importance of these limiters for the voltage stability is shown both in the analysis of small models and in the simulations of larger networks. READ MORE