Analytical Model for Cogging Torque Calculation in Surface-Mounted Permanent Magnet Motors With Rotor Eccentricity and Magnet Defects

• Published in: IEEE transactions on energy conversion Vol. 35; no. 4; pp. 2191 - 2200
• Main Authors: Tong, Wenming, Li, Shiqi, Pan, Xuelong, Wu, Shengnan, Tang, Renyuan
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.12.2020; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Air gaps; Cogging; Cogging torque; Conformal mapping; Defects; Eccentricity; Equivalent circuits; Fault tolerance; Finite element method; Flux density; magnet defects; Magnetic fields; Magnetic flux; Magnetism; Mathematical models; Motors; permanent magnet motor; Permanent magnet motors; Permanent magnets; rotor eccentricity; Rotors; Saturation magnetization; Torque; Torque measurement

This article proposes a novel analytical model which combines subdomain method and magnet equivalent circuit (MEC) method to predict the cogging torque of surface-mounted permanent magnet (SPM) motors with rotor eccentricity and magnet defects in any slot-pole combination cases. Firstly, the general...