Permanent Magnet Synchronous Motor for ceiling fan

This paper proposes the improvements of the new structure of a Permanent Magnet Synchronous Motor (PMSM) for the ceiling fan. The new type ceiling fan is first designed by using PMSM theory and the six-step wave form for the purpose of the manufacture cost reduction. The energy also can be saved at least 50% when the new type motor is compared to the conventional fan based on the induction motor. The cogging torque also can be improvement by using the sin back EMF voltage. The new PMSM is required to meet both of the basic ceiling fan control and the cost reduction.