Designing the c-gen lightweight direct drive generator for wave and tidal energy

O. Keysan, M. Mueller, A. McDonald, N. Hodgins, J. Shek

Research output: Contribution to journalArticle

21 Citations (Scopus)


The C-GEN is a novel permanent magnet generator aimed at reducing overall system mass in direct drive power takeoff applications. The design of a C-GEN generator requires the combination of electromagnetic, structural and thermal models. Models used in the development of design tools applicable to both rotary and linear C-GEN generators are described in this study. The design tool is verified with the experiment results obtained from a 15 kW prototype. A genetic optimisation algorithm is developed combining the analytical model with economical issues to search for most suitable designs for specific applications. Designs are presented using the optimisation design tool for two marine renewable applications: a wave device called Oyster developed by Aquamarine Power and a tidal current device developed by Scotrenewables.
Original languageEnglish
Pages (from-to)161 - 170
Number of pages10
JournalIET Renewable Power Generation
Issue number3
Publication statusPublished - 1 May 2012


  • tidal power stations
  • genetic algorithms
  • permanent magnet generators

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