A self-sensing homopolar magnetic bearing: analysis and experimental results

Author

Tsao, Perry ; Sanders, Seth R. ; Risk, Gabriel

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., California Univ., Berkeley, CA, USA

Volume

4

fYear

1999

fDate

1999

Firstpage

2560

Abstract

One of the chief obstacles to constructing a reliable, low-cost, practical magnetic bearing is designing a suitable position sensor. A homopolar magnetic bearing that uses the same coils to stabilize the rotor and sense its position is introduced. A prototype bearing has been built and successfully used to stabilize a rotor. The electromagnetic analysis of the self-sensing function, the implementation of the prototype design, and experimental results verifying the theoretical analysis of the self-sensing scheme are presented in this paper

Keywords

coils; electric sensing devices; homopolar machines; machine testing; machine theory; magnetic bearings; position measurement; rotors; electromagnetic analysis; position sensing coils; prototype design; rotor stabilisation coils; self-sensing function; self-sensing homopolar magnetic bearing; Coils; Electromagnetic analysis; Force control; Magnetic analysis; Magnetic flux; Magnetic levitation; Magnetic sensors; Prototypes; Pulse width modulation; Stators;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Conference, 1999. Thirty-Fourth IAS Annual Meeting. Conference Record of the 1999 IEEE

Conference_Location

Phoenix, AZ

ISSN

0197-2618

Print_ISBN

0-7803-5589-X

Type

conf

DOI

10.1109/IAS.1999.799200

Filename

799200