Electrodynamic wheel

Short description: Proposed electrodynamic levitation system

An electrodynamic wheel is a type of wheel proposed for use in electrodynamic levitation of the maglev train transport system.[1][2][3]

Unlike a conventional wheel, an electrodynamic wheel has a rim studded with magnets of alternating poles. As the wheel spins, which is done at a rate so that there is slip between the rim and the guideway's surface, magnetic fields are induced in the conductive guideway, which repels the wheel.

Depending on the spin, electrodynamic wheels can provide propulsion, braking, control, and lift.

## Contents

* 1 Using 2D model
* 2 Examples
* 3 See also
* 4 References

## Using 2D model

The mechanical rotation of a radially positioned permanent-magnet Halbach array above a conducting, nonmagnetic track induces eddy currents in the track that can inductively create suspension and propulsion forces simultaneously. The parameters that affect the performance of this electrodynamic wheel are studied using a 2-D steady-state finite-element method.

## Examples

The Hendo hoverboard uses electrodynamic wheels to levitate itself over a conductive surface.[4]

## See also

* Halbach array
* Spin-stabilized magnetic levitation

## References

1. ↑ Bird, J. "An Electrodynamic Wheel with a Split-Guideway Capable of Simultaneously Creating Suspension, Thrust and Guidance Forces". University of Wisconsin-Madison. http://lipo.ece.wisc.edu/2005pubs/2005_39.pdf. Retrieved 20 December 2012.
2. ↑ J, Bird. "A Study of the Effect of Using Electrodynamic Wheels in Series". University of Wisconsin-Madison. http://lipo.ece.wisc.edu/2005pubs/2005_40.pdf. Retrieved 20 December 2012.
3. ↑ Bird, J.; Lipo, T.A. (August 2007). "Characteristics of an Electrodynamic Wheel Using a 2-D Steady-State Model". IEEE Transactions on Magnetics 43 (8): 3395–3405. doi:10.1109/TMAG.2007.900572. Bibcode: 2007ITM....43.3395B.
4. ↑ Henderson, D. Gregory, "Magnetic levitation of a stationary or moving object", US patent 9148077, published 2015-09-29, assigned to ARX PAX LLC

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