| Title |
A Study On the Operational Characteristics and Eddy Current Loss Reduction of IPMSM According to Winding Method |
| Authors |
양인준(In-Jun Yang) ; 최도현(Do-Hyeon Choi) ; 김원호(Won-Ho Kim) ; 정동훈(Dong-Hoon Jung) |
| DOI |
https://doi.org/10.5370/KIEEP.2022.71.4.248 |
| Keywords |
IPMSM; Eddy Currnet Loss; FEA; Winding Method; Operational Characteristic |
| Abstract |
Concentrated IPMSM has advantages in various aspects, such as space ratio, mass productivity, and copper loss, but concentrated winding has a limitation that the eddy current loss of permanent magnets is quite large compared to distributed winding. Eddy current loss means the heat of the rotor and becomes larger during high-speed operation. Therefore, in the concentrated IPMSM that requires high-speed operation, it is essential to design to reduce eddy current loss. In this paper, in order to reduce the eddy current loss of the IPMSM, a shape that increases the reluctance of the q-axis was applied to the rotor, and each was designed by dividing into concentrated winding and distributed winding. The number of pole slots of concentrated winding was selected as 6 poles and 9 slots, and the number of pole slots of distributed winding was selected as 6 poles and 27 slots. Through FEA, the voltammetry limit circle and T-N curve were compared according to each winding method. By comparing the d-axis inductance and q-axis inductance, a model that is advantageous at high speed was confirmed, and the no-load and load characteristics according to the operating speed were compared in detail |