Vertical axis wind turbine generator case study: costs and losses associated with variable torque and variable speed strategies

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Abstract

This case study investigates the generator of a large offshore Vertical Axis Wind Turbine (VAWT). In particular this case study focuses on the effect of the inherent cyclic torque loading of the VAWT on the generator in terms of the costs and losses experienced. A spectrum of torque control strategies were created based on the ratio q of the allowed electrical torque variation to the mechanical torque variation. Equations relating the copper and iron losses of the generator to this q factor were established and investigated for a test turbine. In addition the relationship between the allowed variation in electrical torque and the cost of the active materials of the generator was explored.
Original languageEnglish
Number of pages6
DOIs
Publication statusAccepted/In press - 20 Jun 2016
Event 5th IET International Conference on Renewable Power Generation (RPG) 2016 - IET London: Savoy Place, London, United Kingdom
Duration: 21 Sep 201623 Sep 2016
http://conferences.theiet.org/rpg-europe/about/index.cfm

Conference

Conference 5th IET International Conference on Renewable Power Generation (RPG) 2016
CountryUnited Kingdom
CityLondon
Period21/09/1623/09/16
Internet address

Keywords

  • VAWT
  • generator
  • drivetrain
  • losses
  • wind Energy
  • torque control
  • wind turbine
  • variable torque
  • off-shore

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