Eddy current loss calculation and thermal analysis of high-speed motor winding in magnetically suspended control moment gyroscope

Bang-cheng, 韩邦成 Han; Song, 彭 松 Peng; Zan, 贺 赞 He; Xu, 刘旭 Liu; Xu, 张 旭 Zhang

doi:10.3788/ope.20202801.0130

Cited by 4 publications

(1 citation statement)

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“…A combination of the finite element method and the analytical method was discussed by Han, as was the eddy current loss of coil windings. The accuracy of thermal analysis predictions was verified through experiments [14]. A short-stroke planar motor with a non-integrated winding structure and an integrated winding structure was analyzed by Zhang [15].…”

Section: Introductionmentioning

confidence: 94%

Optimal Design of Magneto-Force-Thermal Parameters for Electromagnetic Actuators with Halbach Array

Liu

et al. 2021

Actuators

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A magnetic levitation isolation system applied for the active control of micro-vibration in space requires actuators with high accuracy, linear thrust and low power consumption. The magneto-force-thermal characteristics of traditional electromagnetic actuators are not optimal, while actuators with a Halbach array can converge magnetic induction lines and enhance the unilateral magnetic field. To improve the control effect, an accurate magnetic field analytical model is required. In this paper, a magnetic field analytical model of a non-equal-size Halbach array was established based on the equivalent magnetic charge method and the field strength superposition principle. Comparisons were conducted between numerical simulations and analytical results of the proposed model. The relationship between the magnetic flux density at the air gap and the size parameters of the Halbach array was analyzed by means of a finite element calculation. The mirror image method was adopted to consider the influence of the ferromagnetic boundary on the magnetic flux density. Finally, a parametric model of the non-equal-size Halbach actuator was established, and the multi-objective optimization design was carried out using a genetic algorithm. The actuator with optimized parameters was manufactured and experiments were conducted to verify the proposed analytical model. The difference between the experimental results and the analytical results is only 5%, which verifies the correctness of the magnetic field analytical model of the non-equal-size Halbach actuator.

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Section: Introductionmentioning

confidence: 94%