A surface-charge induction motor

Author

Choi, Soon Dal ; Dunn, Donald A.

Author_Institution

Jet Propulsion Laboratory, Pasadena, Calif.

Volume

59

Issue

5

fYear

1971

fDate

5/1/1971 12:00:00 AM

Firstpage

737

Lastpage

748

Abstract

A motor that uses an electric field interaction with surface charges induced on the surface of a lossy dielectric rotor as the force mechanism is described. A theory of force generation and efficiency for a transverse-magnetic wave interaction with a moving conducting medium and a space-harmonic analysis of a practical circuit to carry such a wave are presented. A comparison is made between the results of this analysis and test results on a three-phase 60-Hz motor using a Bakelite or a Plexiglas rotor. Satisfactory agreement between theory and experiment is obtained in most respects. Motor operation was observed in both directions of rotation, as a result of interaction with the first backward space harmonic. Generator operation is also theoretically possible and the theory for a single-harmonic-wave generator is presented. Generator operation was not observed, however, in the device that was tested.

Keywords

Argon; Dielectric losses; Dielectric materials; Induction generators; Induction motors; Ion beams; Magnetohydrodynamic power generation; Ring lasers; Rotors; Testing;

fLanguage

English

Journal_Title

Proceedings of the IEEE

Publisher

ieee

ISSN

0018-9219

Type

jour

DOI

10.1109/PROC.1971.8253

Filename

1450183