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Upgrading Generators with new Tools and High Voltage Technology
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Division for Electricity and Lightning Research.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Division for Electricity and Lightning Research.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Division for Electricity and Lightning Research.
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2004 (English)In: International journal on hydropower and dams, ISSN 1352-2523, Vol. 11, no 3, 104-108 p.Article in journal (Refereed) Published
Place, publisher, year, edition, pages
2004. Vol. 11, no 3, 104-108 p.
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:uu:diva-94417OAI: oai:DiVA.org:uu-94417DiVA: diva2:168256
Available from: 2006-04-28 Created: 2006-04-28 Last updated: 2017-12-14Bibliographically approved
In thesis
1. Electric Power Generation and Storage Using a High Voltage Approach
Open this publication in new window or tab >>Electric Power Generation and Storage Using a High Voltage Approach
2006 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Production and consumption of electricity have grown enormously during the last century. No mater what the primary source of energy is, almost all generation of electricity comes from conversion of a rotational movement in a generator. The aim of this thesis is to see how high voltage technology influence production and storage of electricity. Power flow in the generators used to convert mechanical movement to electric energy is analyzed using Poynting‘s vector. The impact of new generator technology for efficient extraction of hydroelectric power is shown. Simulation of a large permanent magnet turbo generator is presented. A flywheel storage system for electric vehicles utilizing high voltage technology is also presented. In pulsed power applications, a cheap method for intermediate storage of energy during milliseconds, which enables an inductive primary storage is presented and experimentally tested.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2006. 91 p.
Series
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1651-6214 ; 173
Keyword
Engineering physics, Flywheel, Generation, Generator, High Voltage, Power flow, Poynting, Teknisk fysik
Identifiers
urn:nbn:se:uu:diva-6833 (URN)91-554-6552-8 (ISBN)
Public defence
2006-05-19, Polhemsalen, Ångström, Lägerhyddsvägen 1, Uppsala, 13:15
Opponent
Supervisors
Available from: 2006-04-28 Created: 2006-04-28Bibliographically approved
2. Direct Drive Generator for Renewable Power Conversion from Water Currents
Open this publication in new window or tab >>Direct Drive Generator for Renewable Power Conversion from Water Currents
2005 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

In this thesis permanent magnet direct drive generator for power conversion from water currents is studied. Water currents as a power source involves a number of constrains as well as possibilities, especially when direct drive and permanent magnets are considered. The high power fluxes and low current velocities of a water current, in combination with its natural variations, will affect the way the generator is operated and, flowingly, the appearance of the generator. The work in this thesis can, thus, be categorized into two general topics, generator technology and optimization. Under the first topic, fundamental generator technology is used to increase the efficiency of a water current generator. Under the latter topic, water current generators are optimized to a specific environment. The conclusion drawn from this work is that it is possible to design very low speed direct drive generators with good electromagnetic properties and wide efficiency peak.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2005. 44 p.
Series
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1651-6214 ; 100
Keyword
Engineering physics, Teknisk fysik
National Category
Other Engineering and Technologies
Identifiers
urn:nbn:se:uu:diva-6010 (URN)91-554-6362-2 (ISBN)
Public defence
2005-11-04, Häggsalen, Ångströmlaboratoriet, Lägerhyddsvägen 1, Uppsala, 10:00
Opponent
Supervisors
Available from: 2005-10-19 Created: 2005-10-19 Last updated: 2013-07-31Bibliographically approved

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