| A study of investigation in combining methods of concentrated slot and gradually inclined surface end (GISE) has been recorded and exposed in this thesis. The utilization of permanent magnet synchronous motor (PMSM) is popular due to several advantages given than other types of motors as an actuator. In the operation of PMSM, a small size and weight of a PMSM might suffice a great reliability and efficiency already, as well as the absence of additional fuel needed to operate. Ability to capacitate while operating is also possessed by PMSM who operates due to interactions between charged slot windings and the permanent magnet which exerts flux. However, the permanent magnet might interact to the neighboring slots, causing unwanted pull interactions which is called cogging torque. Aside from cogging torque, the other drawbacks of a PMSM are flux eddy current formed along the machine due to high magnetic flux density in certain areas of the machine. Therefore, a combination of concentrated slot and GISE is done to optimize the machine performance. While the concentrated slot method increases cogging frequency to decrease cogging torque amplitude, GISE method decreases cogging torque by minimizing tangential force from the permanent magnet. Since the method involves sides elimination of the magnet, magnet area also has to be maintained to not be decreased excessively in consequence of magnetic field energy exertion. In this study, the design parameter in succession to decrease flux eddy current effectively also reduced 71% of cogging torque from the conventional design. |