摘要
采用一种基于运动边界法的时步有限元法实现摆线永磁齿轮涡流损耗的计算。方法在磁场计算中,可实现转子的自转与公转,具有高度的自完成性,提高了计算速度。通过改变各参数(如输入转速,偏心距等参数),分别研究各参数对涡流损耗的影响。通过计算得出:Halbach阵列型摆线永磁齿轮的涡流损耗与输入转速的平方和材料的电导率成正比;当偏心距增大时,各部分涡流损耗均在增加,其中转子轭部涡流损耗最小;当轭部厚度增大时,各部分涡流损耗均在增加,其中定子轭部涡流损耗出现明显增加。最后,通过实验来验证有限元计算的正确性。
A time-stepping finite element method based on the borderline slippage method is applied to calculate the eddy current loss in the cycloid permanent magnetic gear. In the finite element magnetic field analysis, this method realizes the rotor automatically revolves both round the stator axis and its own axis with a high degree of self completion, and greatly improves the calculation speed and efficiency. By changing the parameters （such as the input speed, eccentricity）, influence factors of the eddy current loss are studied respectively. The calculation results show that the eddy current loss of the Halhach array cycloid permanent magnetic gear is proportional to the square of the speed and the conductivity of the material. With the increasing of the eccentricity, the eddy current losses of the rotor and stator are increasing, and the eddy current loss of the rotor yoke is smallest. With the increasing of the yoke thickness, the eddy current losses of the rotor and stator are increasing, and the eddy current loss of the stator yoke increased significantly. Finally, a prototype cycloid permanent magnetic gear was built to verify the simulation results.
出处
《机械强度》
CAS
CSCD
北大核心
2014年第5期745-751,共7页
Journal of Mechanical Strength
关键词
运动边界法
有限元法
摆线永磁齿轮
涡流损耗
磁场
HALBACH阵列
Borderline slippage method
Finite element method （FEM）
The cycloid permanent magnetic gear
Eddy current loss
Magnetic field
Halbach array
