Analysis and Suppression Techniques of Helical Motion Coupling Effect for the 2DoF Direct Drive Induction Machine

Xie, Lujia; Si, Jikai; Wu, T.-F.; Hu, Yihua; Zhou, Jiafeng; Xu, Shuai

doi:10.1109/tie.2021.3060653

Cited by 6 publications

(3 citation statements)

References 21 publications

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“…As the mover moves in a straight line with a linear velocity of v , the rotating magnetic field generates a velocity electric field B r v on the unit area, and at the same time, the unit area also generates a current J 2 , where B r is the magnetic field density on the unit area. A current J r generated by these two electric fields in this unit area is (Xie et al , 2022): where σ cu is the conductivity of the copper layer of the mover.…”

Section: Normal Force Analysis Considering Coupling Effectmentioning

confidence: 99%

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Normal force calculation of two-degree-of-freedom direct drive induction motor considering coupling effect

Nie

Meng

Wang

et al. 2023

COMPEL

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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.

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Section: Normal Force Analysis Considering Coupling Effectmentioning

confidence: 99%

“…Two degrees of freedom motor (2DOFM) can produce linear, rotary and helical motion (Xie et al , 2022), which has the advantages of integrated structure, high material utilization and fast response. It has attracted more and more attention in the fields of household appliances, industrial manufacturing and so on.…”

Section: Introductionmentioning

confidence: 99%

Normal force calculation of two-degree-of-freedom direct drive induction motor considering coupling effect

Nie

Meng

Wang

et al. 2023

COMPEL

Self Cite

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“…Additionally, the performances of the linear and rotary motion of the decoupled-flux RL machine are similar to the rotary and linear machine with the same structure. In order to avoid flux coupling issue, certain large gaps between the magnetic fields of two motions should be adopted, where the flux coupling effect has been investigated in [15], [16]. Thus, the machine volume is relatively bulky, and the space utilization rate is deteriorated.…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of Two Degree-of-Freedom Rotary-Linear Machines With Permanent-Magnet Mover for High Dynamic Performance

Cai

Zhou

et al. 2022

IEEE Access

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This paper analyzes and evaluates various topologies of yokeless rotary-linear (RL) machine with permanent-magnet (PM) mover targeting for the achieving high dynamic performance. For the conventional yokeless RL machines, the single-stator topology features limited slot area for armature winding excited for both motions, and the coupled magnetic fields of both motions requires complex control strategy. In order to mitigate these issues, a double-stator RL machine with hybrid PMs array, which adopts the PMs with six magnetization directions, is proposed in this paper. An improved PMs array is introduced for the double-stator topology to achieve decoupled control for both motions. In addition, an analytical model of the radial flux density is derived to reveal the characteristics of the magnetic fields in different topologies. The parametric studies towards key dimensions are conducted to provide design guidelines and obtain the optimal design. Finally, the electromagnetic performances of the proposed design are compared systematically with the conventional single-stator counterparts. It is revealed that the proposed topology can enhance the performances in both motions, namely rotary and linear motions.

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Design and Analysis of an Outer Mover Linear-Rotary Vernier Machine

Guo

2021

J. Electr. Eng. Technol.

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Analysis and Suppression Techniques of Helical Motion Coupling Effect for the 2DoF Direct Drive Induction Machine

Cited by 6 publications

References 21 publications

Normal force calculation of two-degree-of-freedom direct drive induction motor considering coupling effect

Normal force calculation of two-degree-of-freedom direct drive induction motor considering coupling effect

Comparative Study of Two Degree-of-Freedom Rotary-Linear Machines With Permanent-Magnet Mover for High Dynamic Performance

Design and Analysis of an Outer Mover Linear-Rotary Vernier Machine

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