Finite Element Analysis of Eddy Current Actuator for Linear Motion

A Fenercioglu, Y Avsar - … on Electric Drives: MPEI Department of …, 2020 - ieeexplore.ieee.org
2020 27th International Workshop on Electric Drives: MPEI …, 2020ieeexplore.ieee.org
In this study, eddy current actuator is proposed to obtain linear drive without mechanical
contact. The magnetic drum forms the basis of this system which rotates without touching the
near non-ferrous plate. The rotating magnetic drum induces eddy current in the plate.
Mechanical power is transferred to the plate with this force generated by eddy current, and
motion is provided. The forces were analyzed by finite element method according to plate
thickness, drum speed and air gap variables and the performance of the optimal eddy …
In this study, eddy current actuator is proposed to obtain linear drive without mechanical contact. The magnetic drum forms the basis of this system which rotates without touching the near non-ferrous plate. The rotating magnetic drum induces eddy current in the plate. Mechanical power is transferred to the plate with this force generated by eddy current, and motion is provided. The forces were analyzed by finite element method according to plate thickness, drum speed and air gap variables and the performance of the optimal eddy current actuator is determined. In addition, magnetic flux and current densities in the drum and plate were examined. The proposed system generates approximately 50 N force for 3 mm aluminum plate thickness, 0.5 mm air gap and 3000 rpm drum speed. This force can provide contactless and mechanism less movement of the plate. The envisaged system will be able to drive the loads coupled to the plate in many applications such as automatic sliding door.
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