Optimal strength design of a high-speed permanent magnet motor rotor based on multi-dimensional visualization
TU Zhiyi1, CHEN Liangliang1, WU Jiaju1, MA Hang1, XIONG Ru2, WU Jian1, LI Zhinong3
1.School of Information Engineering, Nanchang Hangkong University，Nanchang 330063,China;
2. Power Supply Service Management Center of Jiangxi Electric Power Co., Ltd., Nanchang 330077,China;
3. Key Laboratory of Nondestructive Testing Technology, Ministry of Education, Nanchang Hangkong University ,Nanchang 330063,China
Abstract：In high-speed permanent magnet motor, the permanent magnet is not strong enough to bear the centrifugal force caused by high-speed rotation. A high strength and non-conductive metal sheath is needed to protect the permanent magnet material. For the structure of solid cylinder permanent magnet rotor in high speed permanent magnet motor, the stress condition of the rotor is simplified as a plane stress problem, and the analytical formulas for the strength of a cylindrical permanent magnet rotor with a non-magnetic metal sheath is derived by the displacement method in polar coordinate. On this basis, a multi-dimensional visualization algorithm is used to study the influences of sheath thickness, interference fit and rotation speed on rotor strength, and the feasible region of sheath thickness and interference fit , under both static and high-speed running conditions, are obtained through intersection operation among the multi-dimensional visualization maps in, subsequently, the optimal values of design parameters are selected in the feasible region. Finally, the validity of the design scheme is verified by the finite element method. The results show that the lumped solutions of the sheath thickness and interference fit can be obtained by the proposed optimal design method based on multi-dimensional visualization , and it is beneficial to achieve the robust optimization, with the advantages of direct viewing and convenience.
Key words: High-speed permanent magnet motor; strength calculation; Finite Element; Visualization algorithm.
涂之艺1，陈亮亮1，伍家驹1，马航1，熊茹2，吴剑1，李志农3. 基于多维可视化的高速永磁电机转子强度优化设计[J]. 振动与冲击, 2022, 41(18): 236-243.
TU Zhiyi1, CHEN Liangliang1, WU Jiaju1, MA Hang1, XIONG Ru2, WU Jian1, LI Zhinong3. Optimal strength design of a high-speed permanent magnet motor rotor based on multi-dimensional visualization. JOURNAL OF VIBRATION AND SHOCK, 2022, 41(18): 236-243.
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