Demagnetization mechanism and local infiltration of heavy rare earth for permanent magnet synchronous motor in electric vehicles

• Published in: Dianji yu Kongzhi Xuebao = Electric Machines and Control Vol. 28; no. 3; p. 75
• Main Authors: Xie, Ying, Sun, Cunjun, Cai, Wei, Ren, Shaoqing, Jiang, Jianing
• Format: Journal Article
• Language: Chinese; English
• Published: Harbin Harbin University of Science and Technology 01.01.2024
• Subjects: Coercivity; Demagnetization; Design factors; Dysprosium; Electric vehicles; High temperature; Infiltration; Permanent magnets; Rare earth elements; Synchronous motors; Triangles; Weight reduction

Due to the design requirements of permanent magnet synchronous motor（PMSM） for electric vehicles with high power density, the magnet is more susceptible to electromagnetic and high temperature influence, resulting in demagnetization. A large number of precious rare earth elements such as dysprosium...