A lightweight low-speed permanent magnet electrical generator for direct-drive wind turbines

Mueller, Markus and McDonald, Alasdair (2009) A lightweight low-speed permanent magnet electrical generator for direct-drive wind turbines. Wind Energy, 12 (8). 768–780. ISSN 1095-4244

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Abstract

The evolution, design and test results of a novel permanent magnet generator for use in direct-drive wind turbines are presented. This generator topology is based on steel C-core modules (which make up the rotor) and an air-cored stator winding. This topology allows a reduction in structural mass for large diameter generators, which can lead to lightweight generators.