Thermal performance modeling of foil wound concentrated coils in electric machines

Rios, Michael; Venkataramanan, G.; Muetze, Annette; Eickhoff, Heinrich T.

doi:10.1109/ecce.2016.7855512

Cited by 2 publications

(1 citation statement)

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“…Future work will now need to consider thermal modelling (e.g. [1,7]) in addition to field modelling to optimise electrical machines for haptic applications. As has been shown, the modelling of this field just over the pole lines is difficult so the calculations could use an offset, possibly by 15 to 30 degrees where the surface current is assumed to be zero so as to get best use out of the magnetic field models.…”

Section: Discussionmentioning

confidence: 99%

Modelling the Air-Gap Field Strength of Electric Machines to Improve Performance of Haptic Mechanisms

Harwin

2018

Haptics: Science, Technology, and Applications

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The air-gap of electromagnetic (EM) actuators determines key operating parameters such as their ability to generate force. In haptic devices these parameters are not optimised for the conditions typically seen in operation and include the heat produced in the airgap, the volume of the air-gap, and the intensity and direction of the magnetic field. The relationship between these parameters is complex thus design decisions are difficult to make. This paper considers the role of the radial magnetic field in cylindrical electric motors, a type often used in haptic devices. Two models are derived and compared with experimental measurements. The first model is a closed form solution, the second is a classic Poisson solution to Ampere's equation. These models are shown to be valid for making more general design decisions in relation to haptic actuators, and in particular allow an evaluation of the trade off between the volume of the air-gap, the resulting radial magnetic field and hence heat generated and the resulting forces. electrical machines, electromagnetic actuators, DC motors, radial magnetic field, diametrically polarised, cylindrical magnet

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Section: Discussionmentioning

confidence: 99%