Abstract
In this study, the effect of dummy slot in stator core and magnet in rotor core greatly affects the value of the cogging torque reduction in permanent magnet machine. The structure of permanent magnet machine was analysed employed finite element based on the finite element method magnetic (2D). In this study, 4 type of permanent magnet machine structure has been analysed. Permanent magnet machine structure in rotor have 4 type design magnet, permanent magnet machine with initial structure magnet, bread loaf, magnet edge slotting, and magnet edge slotting-magnet slot of surface. The cogging torque reduction of the proposed permanent magnet machine were computed and compared with the initial structure. Using the finite element, authors have computed and found that the cogging torque reduction of type 3 and type 1. The cogging torque of proposed permanent magnet machine could be reduced to 97.17% by employing the dummy slot in stator core.
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