| Title |
A Study on Rotor Shape for Reducing Low-Order Radial Force in Interior Permanent Magnet Synchronous Motors for Air Compressor |
| Authors |
최대선(Daeseon Cheo) ; 김남호(Nam-Ho Kim) ; 조재훈(Jae-Hoon Cho) ; 권용준(Yong-Jun Kwon) ; 정상용(Sang-Yong Jung) |
| DOI |
https://doi.org/10.5370/KIEE.2025.74.1.56 |
| Keywords |
Harmonics; IPMSM; Notch; No-load air-gap flux density; Radial force density; Torque ripple; 2-layer |
| Abstract |
In this paper, a rotor design to reduce low order raidal force and electromagnetic vibration in interier permanent magnet synchronous motor (IPMSM) for an air compressor is proposed. First, according to the analysis results of radial force and no-load air-gap flux density of V-type 1-layer and 2-layer models, 2-layer model is selected as the initial model since it exhibits lower low radial force than 1-layer model. Additionally, the no-load air-gap flux density of the 2-layer model is further analyzed, confirming that the low order radial forces affected by order harmonic and the fundamental component of no-load air-gap flux density have a 180° phase difference, canceling each other out. Moreover, the sensitivity anlysis of rotor notches reveals that the 3-Notch model effectively increases magnitude of order harmonic. Based on the aformentionted analysis, as a result, by applying notches to the 2-layer model rotor, the low order radial force and electromagnetic vibration are reduced. |