Design and Testing of a Linear Generator for Wave-Energy Applications

N. Hodgins, O. Keysan, A.S. McDonald, M.A. Mueller

Research output: Contribution to journalArticlepeer-review


A linear-generator topology is proposed for wave-energy applications. The main significance of the generator topology is that the relative position of the magnets, copper, and steels has been chosen so that there are no magnetic attraction forces between a stator and a permanent-magnet (PM) translator. The lack of magnetic forces and the modular nature of the generator topology make the manufacture and assembly of the generator easier than a conventional iron-cored PM linear generator. Analytical modeling techniques are described with a genetic-algorithm optimization method. The proposed topology is implemented to an Archimedes-wave-swing wave-energy converter. A 50-kW prototype has been built to prove the concept, and the no-load- and load-test results are presented. © 2006 IEEE.
Original languageEnglish
Pages (from-to)2094-2103
Number of pages10
JournalIEEE Transactions on Industrial Electronics
Issue number5
Publication statusPublished - 1 May 2012


  • Direct drive, permanent magnet, wave energy, tidal energy
  • Air-cored
  • Linear Generator
  • wave energy


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