Cogging torque reduction in axial flux machines for small wind turbines
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- Hsieh Min-Fu, Ekram Samsul, and Dorrell David 2009, 'Cogging torque reduction in axial flux machines for small wind turbines', , IEEE, USA, , pp. 144-144.
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Axial-flux slotted permanent magnet machines possess high power density and are suitable for wind turbine applications, where two-sided axial-flux configuration is superior to one-sided configuration . There have been studies on axial flux machines (AFM) for wind turbines (e.g., ); however, very few of them discussed cogging torque, which is undesirable and can affect the cut-in speed of the turbine. Previous studies often used coreless designs  to avoid cogging torque, but these result in low power density . For high power density, the double-rotor slotted AFM is investigated here for wind turbine application, with a solution put forward for the inherent cogging torque.
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