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Upgrading Generators with new Tools and High Voltage Technology
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Tekniska sektionen, Institutionen för teknikvetenskaper.
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Tekniska sektionen, Institutionen för teknikvetenskaper, Elektricitetslära och åskforskning.
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Tekniska sektionen, Institutionen för teknikvetenskaper, Elektricitetslära och åskforskning.
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Tekniska sektionen, Institutionen för teknikvetenskaper, Elektricitetslära och åskforskning.
Vise andre og tillknytning
2004 (engelsk)Inngår i: International journal on hydropower and dams, ISSN 1352-2523, Vol. 11, nr 3, s. 104-108Artikkel i tidsskrift (Fagfellevurdert) Published
sted, utgiver, år, opplag, sider
2004. Vol. 11, nr 3, s. 104-108
HSV kategori
Identifikatorer
URN: urn:nbn:se:uu:diva-94417OAI: oai:DiVA.org:uu-94417DiVA, id: diva2:168256
Tilgjengelig fra: 2006-04-28 Laget: 2006-04-28 Sist oppdatert: 2017-12-14bibliografisk kontrollert
Inngår i avhandling
1. Electric Power Generation and Storage Using a High Voltage Approach
Åpne denne publikasjonen i ny fane eller vindu >>Electric Power Generation and Storage Using a High Voltage Approach
2006 (engelsk)Doktoravhandling, med artikler (Annet vitenskapelig)
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.

sted, utgiver, år, opplag, sider
Uppsala: Acta Universitatis Upsaliensis, 2006. s. 91
Serie
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1651-6214 ; 173
Emneord
Engineering physics, Flywheel, Generation, Generator, High Voltage, Power flow, Poynting, Teknisk fysik
Identifikatorer
urn:nbn:se:uu:diva-6833 (URN)91-554-6552-8 (ISBN)
Disputas
2006-05-19, Polhemsalen, Ångström, Lägerhyddsvägen 1, Uppsala, 13:15
Opponent
Veileder
Tilgjengelig fra: 2006-04-28 Laget: 2006-04-28bibliografisk kontrollert
2. Direct Drive Generator for Renewable Power Conversion from Water Currents
Åpne denne publikasjonen i ny fane eller vindu >>Direct Drive Generator for Renewable Power Conversion from Water Currents
2005 (engelsk)Doktoravhandling, med artikler (Annet vitenskapelig)
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.

sted, utgiver, år, opplag, sider
Uppsala: Acta Universitatis Upsaliensis, 2005. s. 44
Serie
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1651-6214 ; 100
Emneord
Engineering physics, Teknisk fysik
HSV kategori
Identifikatorer
urn:nbn:se:uu:diva-6010 (URN)91-554-6362-2 (ISBN)
Disputas
2005-11-04, Häggsalen, Ångströmlaboratoriet, Lägerhyddsvägen 1, Uppsala, 10:00
Opponent
Veileder
Tilgjengelig fra: 2005-10-19 Laget: 2005-10-19 Sist oppdatert: 2013-07-31bibliografisk kontrollert

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