(7)Design methodology of permanent magnet generators for fixed-pitch tidal turbines with overspeed power limitation strategy
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Sofiane Djebarria, Jean Frédéric Charpentier b , Frank Scuillerb , Mohamed Benbouzidc,d,∗
aECAM Lyon, LabECAM, F69005 Lyon, France
bFrench Naval Academy, IRENav EA 3634, 29240 Brest, France
c University of Brest, UMR CNRS 6027 IRDL, 29238 Brest, France
d Shanghai Maritime University, 201306 Shanghai, China
Received 15 June 2019; received in revised form 3 September 2019; accepted 4 September 2019
Available online 10 September 2019
Abstract
This paper deals with a design methodology of permanent magnets (PM) generators used for fixed-pitch tidal turbines in a marine
renewable energy context. In the case of underwater turbines, fixed-pitch tidal turbines could be very attractive and interesting to reduce
maintenance operation by avoiding using such a complex electromechanical system for blade- pitching. In this technological case, one of the
main control challenges is to ensure power limitation at high tidal current velocities. This control mode can be achieved using the generator
flux-weakening. In this context, this paper proposes an original and systemic design methodology to optimize the generator design taking
into account the tidal turbine power limitation for high tidal currents velocities.
© 2019 Shanghai Jiaotong University. Published by Elsevier B.V.
This is an open access article under the CC BY-NC-ND license. (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Keywords: Tidal turbine; Fixed-pitch turbine; Direct-drive; PM generator; Design methodology; Flux-weakening power limitation.