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JEET, Vol. 13, No. 6, November 2018
Design of Surface-Mounted Permanent Magnet Synchronous Motor Considering Axial Leakage Flux by using 2-Dimensional Finite Element Analysis
Jae-Woo Jung
Area B - Electric Machinery and Power Electronics
Abstract This paper deals with optimum design of surface mounted permanent magnet synchronous motor (SPMSM) for automotive component. For a compact system structure, it was designed as a motor with a 14-pole 12-slot concentrated winding and hollow shaft. The motor is a thin type structure which stator outer diameter is relatively large compared to its axial length and is designed to have a high magnetic saturation for increasing the torque density. Since the high magnetic saturation in the stator core increases the axial leakage flux, a 3-dimensional (3-D) finite element analysis (FEA) is indispensable for torque analysis. However, optimum designs using 3-D FEA is inefficient in terms of time and cost. Therefore, equivalent 2-D FEA which is able to consider axial leakage flux is applied to the optimization to overcome the disadvantages of 3-D FEA. The structure for cost reduction is proposed and optimum design using equivalent 2-D FEA has been performed.
Keyword Finite element analysis,Torque,Leakage flux,Equivalent magnetic circuit,Surface mounted permanent magnet synchronous motor
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