Title :
Investigation on Characteristics and Optimal Shapes of Interior PM Synchronous Motor for Electric Vehicle Application
Author :
Kim, S.I. ; Hong, J.P. ; Hur, J.
Author_Institution :
Dept. of Automotive Eng., Hanyang Univ., Seoul
Abstract :
The torque ripple of interior PM synchronous motor (IPMSM) operated in wide speed range through flux weakening variously varies according to operating point. That is mainly generated because of the difference of magnetic saturation in each point. Moreover, from the torque performance point of view, the IPMSM with concentrated winding is relatively disadvantage compared with that with distributed winding and surface PM synchronous motor. Therefore, in this paper, each optimal model minimizing torque ripple at the base and maximum speed and cogging torque is investigated by an optimization method. In addition, the characteristics of each model are compared by finite element analysis and characteristic equation. In the end, the final results show the optimal shape according to the operating point of IPMSM must be changed to satisfy torque performance.
Keywords :
electric vehicles; finite element analysis; machine windings; permanent magnet motors; synchronous motors; torque; cogging torque; concentrated winding; distributed winding; electric vehicle; finite element analysis; flux weakening; interior PM synchronous motor; magnetic saturation; optimal shapes; optimization method; surface PM synchronous motor; torque ripple; Electric vehicles; Equations; Finite element methods; Forging; Magnetic flux; Optimization methods; Saturation magnetization; Shape; Synchronous motors; Torque;
Conference_Titel :
Vehicle Power and Propulsion Conference, 2007. VPPC 2007. IEEE
Conference_Location :
Arlington, TX
Print_ISBN :
978-0-7803-9760-6
Electronic_ISBN :
978-0-7803-9761-3
DOI :
10.1109/VPPC.2007.4544231
