uu.seUppsala University Publications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Electric Power Generation and Storage Using a High Voltage Approach
Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Technology, Department of Engineering Sciences.
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. , p. 91
Series
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1651-6214 ; 173
Keywords [en]
Engineering physics, Flywheel, Generation, Generator, High Voltage, Power flow, Poynting
Keywords [sv]
Teknisk fysik
Identifiers
URN: urn:nbn:se:uu:diva-6833ISBN: 91-554-6552-8 (print)OAI: oai:DiVA.org:uu-6833DiVA, id: diva2:168262
Public defence
2006-05-19, Polhemsalen, Ångström, Lägerhyddsvägen 1, Uppsala, 13:15
Opponent
Supervisors
Available from: 2006-04-28 Created: 2006-04-28Bibliographically approved
List of papers
1. Energy Flow in Synchronous Generators; a Poynting Vector Analysis from Field Simulations
Open this publication in new window or tab >>Energy Flow in Synchronous Generators; a Poynting Vector Analysis from Field Simulations
In: IEEE Transactions on MagneticsArticle in journal (Refereed) Submitted
Identifiers
urn:nbn:se:uu:diva-94413 (URN)
Available from: 2006-04-28 Created: 2006-04-28Bibliographically approved
2. Poynting Theory for Cable Wound Generators
Open this publication in new window or tab >>Poynting Theory for Cable Wound Generators
In: IEEE Transactions on Dielectrics and Electrical InsulationArticle in journal (Refereed) Submitted
Identifiers
urn:nbn:se:uu:diva-94414 (URN)
Available from: 2006-04-28 Created: 2006-04-28Bibliographically approved
3. High Voltage Generator; Ideas Behind Them and Operation Data
Open this publication in new window or tab >>High Voltage Generator; Ideas Behind Them and Operation Data
Manuscript (Other academic)
Identifiers
urn:nbn:se:uu:diva-94415 (URN)
Available from: 2006-04-28 Created: 2006-04-28 Last updated: 2010-01-13Bibliographically approved
4. Rotor Configuuration Impact On Generator Ventilation Needs
Open this publication in new window or tab >>Rotor Configuuration Impact On Generator Ventilation Needs
Manuscript (Other academic)
Identifiers
urn:nbn:se:uu:diva-94416 (URN)
Available from: 2006-04-28 Created: 2006-04-28 Last updated: 2010-01-13Bibliographically approved
5. Upgrading Generators with new Tools and High Voltage Technology
Open this publication in new window or tab >>Upgrading Generators with new Tools and High Voltage Technology
Show others...
2004 (English)In: International journal on hydropower and dams, ISSN 1352-2523, Vol. 11, no 3, p. 104-108Article in journal (Refereed) Published
National Category
Engineering and Technology
Identifiers
urn:nbn:se:uu:diva-94417 (URN)
Available from: 2006-04-28 Created: 2006-04-28 Last updated: 2017-12-14Bibliographically approved
6. Rotor Concept Comparison for Underwater Power Generation
Open this publication in new window or tab >>Rotor Concept Comparison for Underwater Power Generation
2002 (English)Conference paper, Published paper (Other academic)
National Category
Engineering and Technology
Identifiers
urn:nbn:se:uu:diva-94418 (URN)
Conference
Proceedings of the Conference MAREC 2002 Marine Renewable Energy, Newcastle upon Tyne, UK
Available from: 2006-04-28 Created: 2006-04-28 Last updated: 2013-07-31Bibliographically approved
7. Dielectric study of water/methanol mixtures for use in pulsed-power water capacitors
Open this publication in new window or tab >>Dielectric study of water/methanol mixtures for use in pulsed-power water capacitors
2003 In: Jornal of Applied Physics, Vol. 93, no 5, p. 2895-2899Article in journal (Refereed) Published
Identifiers
urn:nbn:se:uu:diva-94419 (URN)
Available from: 2006-04-28 Created: 2006-04-28Bibliographically approved
8. Flywheel energy and power storage systems
Open this publication in new window or tab >>Flywheel energy and power storage systems
2007 (English)In: Renewable & sustainable energy reviews, ISSN 1364-0321, E-ISSN 1879-0690, Vol. 11, no 2, p. 235-258Article in journal (Refereed) Published
Abstract [en]

For ages flywheels have been used to achieve smooth operation of machines. The early models where purely mechanical consisting of only a stone wheel attached to an axle. Nowadays flywheels are complex constructions where energy is stored mechanically and transferred to and from the flywheel by an integrated motor/generator. The stone wheel has been replaced by a steel or composite rotor and magnetic bearings have been introduced. Today flywheels are used as supplementary UPS storage at several industries world over. Future applications span a wide range including electric vehicles, intermediate storage for renewable energy generation and direct grid applications from power quality issues to offering an alternative to strengthening transmission. One of the key issues for viable flywheel construction is a high overall efficiency, hence a reduction of the total losses. By increasing the voltage, current losses are decreased and otherwise necessary transformer steps become redundant. So far flywheels over 10 kV have not been constructed, mainly due to isolation problems associated with high voltage, but also because of limitations in the power electronics. Recent progress in semi-conductor technology enables faster switching and lower costs. The predominant part of prior studies have been directed towards optimising mechanical issues whereas the electro technical part now seem to show great potential for improvement. An overview of flywheel technology and previous projects are presented and moreover a 200 kW flywheel using high voltage technology is simulated.

Keywords
Cost lowering, Semiconductor materials, Engineering design, Performance, Numerical simulation, Mathematical model, Flywheel, Energy storage
National Category
Engineering and Technology
Identifiers
urn:nbn:se:uu:diva-94420 (URN)10.1016/j.rser.2005.01.004 (DOI)000241289600003 ()
Available from: 2006-04-28 Created: 2006-04-28 Last updated: 2017-12-14Bibliographically approved
9. System for Storage of Power
Open this publication in new window or tab >>System for Storage of Power
Manuscript (Other academic)
Identifiers
urn:nbn:se:uu:diva-94421 (URN)
Available from: 2006-04-28 Created: 2006-04-28 Last updated: 2010-01-13Bibliographically approved
10. Rotating and Linear Syncronous Generators for Renewable Electric Energy Conversion: an Update of the Ongoing Research Projects at Uppsala University
Open this publication in new window or tab >>Rotating and Linear Syncronous Generators for Renewable Electric Energy Conversion: an Update of the Ongoing Research Projects at Uppsala University
Show others...
2004 (English)Conference paper, Published paper (Other academic)
National Category
Engineering and Technology
Identifiers
urn:nbn:se:uu:diva-94422 (URN)
Conference
Nordic Workshop on Power and Industrial Electronics, NORPIE, 14-16 juni, 2004, Trondheim, Norway
Available from: 2006-04-28 Created: 2006-04-28 Last updated: 2018-02-06

Open Access in DiVA

fulltext(3607 kB)10201 downloads
File information
File name FULLTEXT01.pdfFile size 3607 kBChecksum MD5
dc0618509722f6828c4407d3faf61fc24fdfb137cc169775a8838d92a8b0e765c882e802
Type fulltextMimetype application/pdf
cover(564 kB)98 downloads
File information
File name COVER01.pdfFile size 564 kBChecksum MD5
464b9d56b3bfd0e64c759608ccd87c0dd678f8052b94f06ddcd048673e20ff1814b54363
Type coverMimetype application/pdf
Buy this publication >>

By organisation
Department of Engineering Sciences

Search outside of DiVA

GoogleGoogle Scholar
Total: 10201 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

isbn
urn-nbn

Altmetric score

isbn
urn-nbn
Total: 2492 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf