This paper focuses on the preliminary design process of a 20 MW electric generator. The application calls for an offshore, vertical axis, direct drive wind turbine. Arguments for selecting the type of electric machine for the application are presented and discussed. Comparison criteria for deciding on a type of machine are listed. Additional constraints emerging from the direct drive, vertical axis concepts are considered. General rules and a preliminary algorithm are discussed for the machine selected to be most suitable for the imposed conditions.
Proceedings of the 20th International Conference on Electrical Machines (icem), 2012, 2012, p. 190-195
AC machines; Direct drive; Generators; Rotating machines; Wind energy
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20th International Conference on Electrical Machines, 2012