Force Formulation of a Three-phase Tubular Linear Machine with Dual Halbach Array
A novel dual Halbach array is proposed in this paper to increase the output performance of tubular linear machines. The magnetic field distribution in three-dimensional (3D) space is formulated with Bessel functions analytically. Following that, the modeling of force output for linear machines with threephase windings is carried out based on Lorentz force law. The formula component of force ripple is separated from the analytical expression of total force. It is found that for multi-phase tubular linear machines, the force output and force ripple are not only closely related to the instantaneous position of the mover, but also the starting position. Therefore, the force output of the linear machine is formulated for three typical starting positions as a function of mover positions. The derived models are simulated with respect to the mover’s motion. They are also validated with numerical results from finite element calculation. The study shows that an appropriate starting position of the mover helps to improve the output performance of the tubular linear machines. The proposed analytical force model can also be employed to analyze the influence of the structure parameters on the force output of linear machines with similar structures.
Linear machine Force output Electromagnetic actuator
Liang Yan Lei Zhang Nan Yao Tianyi Wang Zongxia Jiao I-Ming Chen
School of Automation Science andElectrical Engineering, Beihang University,Beijing, China 100191 School of Mechanical and Aerospace Engineering, Nanyang Technological University,Singapore 639798
国际会议
IEEE 10th International Conference on Industrial Informatics(第十届IEEE工业信息学国际学术会议 INDIN2012)
北京
英文
647-652
2012-07-25（万方平台首次上网日期，不代表论文的发表时间）