High-power electrical machinery with toroidal permanent magnets

Details High-power electrical machinery with toroidal permanent magnets High-power electrical machinery with toroidal permanent magnets

1993-02-22

1994-05-31

Skudy, R,

Electrical generator or motor structure

Dynamoelectric

Rotary

310154, 310248, 310261, H02K 3100

Patent

active

053172280

ABSTRACT:
A pair of hollow permanent magnets mounted to form a toroidal stator having cylindrical gaps and opposed cavities. The magnets are polarized such that their magnetic flux passes in one direction through the gaps to intersect the rotor along two cylindrical bands and then passes through the magnetic shell and subsequently in the opposite direction through the cavities to intersect the rotor in a cylindrical region located between the cylindrical bands. An electrical circuit couples a utilization device to the rotor. Another embodiment of the invention uses a magnetic mirror to replace one of the permanent magnets. Still other embodiments teach the use of a plurality of toroidal stators mounted in tandem about a common rotor. The machine may be used as a homopolar generator or a homopolar motor.

REFERENCES:
patent: 3426224 (1969-02-01), Esters
patent: 4837542 (1985-06-01), Leupold
patent: 5063004 (1991-11-01), Leupold
patent: 5075662 (1991-12-01), Leupold et al.
Encyclopedic Dictionary of Electronics & Nuclear Engineering, R. I. Sarbar, Prentice-Hall, Inc. (pp. 597-598), Englewood Clifs, N.J., 1959.
Permanent Magnets for Production & Use of High Energy Particle Beams, K. Halbach, Proceedings of the 8th Intern. Workshop on Rare Mag's & Their Applic's; Univ. of Dayton, Dayton, Ohio; 1985, (pp. 123-136).
A Catalogue of Novel Permanent-Magnet Field Soures, H. A. Leupold et al; Paper W.3.2; 9th Intern. Workshop on Rare Earth Magnets & Their Applications; Bad Soden, Frg., 1987.

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