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'WEC-Direct' - Contra-rotating generator

PTO Stage 1 - Public Report - Energy Systems Research Unit


  • Stage

    Stage 1

  • Project Lead

    Energy Systems Research Unit, University of Strathclyde

  • Project Sub-Contractors

    Nautricity Ltd

  • Author

    Energy Systems Research Unit, University of Strathclyde

  • Date

    June 2017

This is the PTO stage 1 project summary report for the University of Strathclyde WEC-Direct project.

This feasibility study investigated the application of a direct drive, contra-rotating generator to different WEC architectures in order to establish the impact this step changing technology can have on reducing plant capital costs through:

  • weight savings
  • reduction of the station keeping/hold down capacity
  • reducing operational and maintenance costs through the elimination of generally complex power transfer and take-off systems
  • improvements to device performance and efficiency through the elimination of the power conversion and transfer system and
  • ultimately reducing the cost of energy from WECs.

Project Keywords: PTO, Lessons Learnt