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A comparative study of methods for modelling the structural stiffness of generator components

Jaen Sola, P. and McDonald, A. S. (2016) A comparative study of methods for modelling the structural stiffness of generator components. In: A Comparative Study of Methods for Modelling the Structural Stiffness of Generator Components. IET, Stevenage, pp. 1-7.

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Direct-drive generators are low speed electrical machines requiring robust and large supporting structures designed to resist the significant loads present during assembly and operation. Generator structures have to be stiff, especially in the radial direction for radial-flux machines. This paper presents three different structural modelling approaches: finite element, analytical and hybrid (a combination of the results obtained from dimensional studies and finite element analyses). These are used along with models of electromagnetic active material, to parametrically calculate the minimum structural stiffness and mass of the components forming the machine.