Calculation and Verification of Magnetic Force in a Radial Permanent Magnetic Bearing based on Quasi-Monte Carlo Method
编号:235 访问权限:仅限参会人 更新:2020-10-15 20:24:21 浏览:270次 口头报告

报告开始:2020年11月03日 09:45(Asia/Shanghai)

报告时间:15min

所在会场:[C] Electric Machine Design and Control [C1] Session 12 and Session 17

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摘要
Permanent magnetic bearings (PMB) are used nowadays in many applications ranging from turbomachinery to energy storage flywheels due to their simple construction, no contact, and no wear. The calculation of the magnetic force is of great significance in the optimal design progress. However, the current magnetic force expression obtained by the equivalent magnetic charge model is a multidimensional integral with a complex integrand. In order to simplify the calculation under the premise of ensuring accuracy, the equal distribution sequence Quasi-Monte Carlo method (QMC) is used to calculate the magnetic force between two ring magnets in this paper. Based on Monte Carlo method (MC), it is proposed to solve the multidimensional integral by using a sequence of low-discrepancy irrational numbers that are more uniform than the randomly generated point distribution to avoid aliasing of projections and have a faster rate of convergence. The integral is programmed in MATLAB using MC and QMC and verified using the finite element method (FEM), then the results are compared with the data in published literature. The results show that QMC has higher accuracy and better repeatability than MC, and the calculation efficiency is higher. The results of the proposed method are in good agreement with FEM and published literature, and the required time is shorter than FEM, which is a more suitable method for magnetic force calculation in some cases.
关键词
permanent magnet bearings, magnetic forces, Monte Carlo, numerical calculation
报告人
Yuanhao Du
Huazhong University of Science and Technology

稿件作者
Yuanhao Du Huazhong University of Science and Technology
Caiyong Ye Huazhong University of Science and Technology
Cong Deng Huazhong University of Science and Technology
Dezuan Yu Huazhong University of Science and Technology
Fei Xiong Huazhong University of Science and Technology
Jianping Zhang Xiling Magnetic Energy Technology Zhengding co. LTD
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重要日期
  • 会议日期

    11月02日

    2020

    11月04日

    2020

  • 10月27日 2020

    初稿截稿日期

  • 11月03日 2020

    报告提交截止日期

  • 11月04日 2020

    注册截止日期

  • 11月17日 2020

    终稿截稿日期

主办单位
IEEE IAS Student Chapter of Huazhong University of Science and Technology (HUST)
承办单位
Huazhong University of Science and Technology
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