Iron loss analysis of magnetic bearing system considering magnetic-thermal coupling

• DOI: 10.3233/jae-220011
• Publication Date: 2022-05-10T16:24:13Z
• Authors: Chaowu Jin; Hao Su; Yue Dong; Jin Zhou; Yuanping Xu; Xu Yan
• Keywords: Magnetic bearing; Coupling loss

When the magnetic bearing rotor is working, iron loss concentration phenomenon may occur on journal, which will cause temperature gradient journal and thermal unbalance. In order to study phenomenon, a multi-physics simulation method considering magnetic-thermal coupling proposed. Using ANSYS Maxwell for modeling finite element analysis obtain causes of in influence different parameters size distribution loss; using COMSOL distribution. The results show that: because initial disturbance, control effect makes field circumference uneven, resulting concentration; current bias have significant distribution, while speed value; result surface. verified by rise detection experiment. It provides theoretical basis reference unbalance bearing.