Simple nonlinear magnetic analysis for permanent magnet motors

Author

Kano, Yoshiaki ; Kosaka, Takashi ; Matsui, Nobuyuki

Author_Institution

Dept. of Electr. & Comput. Eng., Nagoya Inst. of Technol., Japan

Volume

1

fYear

2003

fDate

12-16 Oct. 2003

Firstpage

387

Abstract

This paper presents a simple nonlinear magnetic analysis for surface-mounted permanent magnet synchronous motor (SPMSM) as an assistant design tool of FEA. The equivalent magnetic circuit of the motor used in the proposed analysis is composed of the saturable permenance tips in the stator teeth for considering the local magnetic saturation. As a result, the proposed analysis is capable of calculating the flux distribution and the torque characteristics in the presence of magnetic saturation. The effectiveness of the proposed analysis is verified by comparing with 3D-FEA in terms of the analytical accuracy. The computation time is greatly reduced as short as 8 seconds while the 3D-FEA requires as much as 32 minutes for the same evaluation.

Keywords

air gaps; equivalent circuits; finite element analysis; magnetic circuits; magnetic flux; permanent magnet motors; stators; synchronous motors; torque; air gap; assistant design tool; equivalent magnetic circuit; flux distribution; local magnetic saturation; magnetic saturation; nonlinear magnetic analysis; permanent magnet motors; saturable permenance tips; stator teeth; surface-mounted permanent magnet synchronous motor; three-dimensional leakage permeance; torque characteristics; Magnetic analysis; Magnetic circuits; Magnetic flux; Nonlinear magnetics; Permanent magnet motors; Saturation magnetization; Stators; Synchronous motors; Teeth; Torque;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Conference, 2003. 38th IAS Annual Meeting. Conference Record of the

Print_ISBN

0-7803-7883-0

Type

conf

DOI

10.1109/IAS.2003.1257530

Filename

1257530