Normal force calculation of two-degree-of-freedom direct drive induction motor considering coupling effect
ISSN: 0332-1649
Article publication date: 10 July 2023
Issue publication date: 23 November 2023
Abstract
Purpose
The purpose of this study is to calculate the normal force of a two degree of freedom direct drive induction motor considering coupling effects based on an analytical model. Compared with the traditional single degree of freedom motor, normal force characteristics of two-degree-of-freedom direct drive induction motor (2DOFDDIM) is affected by coupling effect when the machine is in a helical motion. To theoretically explain the influence mechanism of coupling effect, this paper conducts a quantitative analysis of the influence of coupling effect on normal force based on the established analytical model of normal force considering coupling effect.
Design/methodology/approach
Firstly, the normal forces generated by 2DOFDDIM in linear motion, rotary motion and helical motion are investigated and compared to prove the effect of the coupling effect on the normal force. During this study, several coupling factors are established to modify the calculation equations of the normal force. Then, based on the multilayer theoretical method and Maxwell stress method, a novel normal force calculation model of 2DOFDDIM is established taking the coupling effect into account, which can easily calculate the normal force of 2DOFDDIM under different motions conditions. Finally, the calculation results are verified by the results of 3D finite element model, which proves the correctness of the established calculating model.
Findings
The coupling effect produced by the helical motion of 2DOFDDIM affects the normal force.
Originality/value
In this paper, the analytical model of the normal force of 2DOFDDIM considering the coupling effect is established, which provides a fast calculation for the design of the motor.
Keywords
Acknowledgements
This work was supported by the National Natural Science Foundation of China (52207067, 52277069, 51777060), the Henan Province Key R&D and promotion projects (Scientific and Technological Breakthrough) (232102221016), and the Major Special Project for Collaborative Innovation in Zhengzhou (20XTZX12023).
Citation
Nie, R., Meng, Y., Wang, P., Su, P. and Si, J. (2023), "Normal force calculation of two-degree-of-freedom direct drive induction motor considering coupling effect", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 42 No. 6, pp. 1784-1797. https://doi.org/10.1108/COMPEL-11-2022-0404
Publisher
:Emerald Publishing Limited
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