High-speed drag-cup induction motors for turbo-molecular pumps applications

Author

Bottauscio, O. ; Casaro, F. ; Chiampi, M. ; Giors, S. ; Maccarrone, C. ; Zucca, M.

Author_Institution

Torino, Turin

fYear

2006

fDate

8-12 May 2006

Firstpage

964

Lastpage

964

Abstract

This paper investigates the behaviour of induction motors for high vacuum pump systems, through a coupled modelling and experimental approach. Particular attention is focused on the optimisation of drag-cup motors, aimed at reducing the rotor losses. This analysis is carried on in comparison with the performances of a squirrel-cage induction motor, in order to put in evidence advantages and drawbacks. The numerical model, based on a time-stepping finite element procedure, couples electromagnetic field and circuit equations, allowing the analysis of electronically driven motors. Magnetic hysteresis is included and magnetic losses are computed by the loss separation theory.

Keywords

eddy current losses; finite element analysis; induction motors; magnetic hysteresis; magnetic leakage; rotors; circuit equations; electromagnetic field equation; high-speed drag-cup induction motors; loss separation theory; magnetic hysteresis; magnetic losses; numerical model; rotor losses; squirrel-cage induction motor; time-stepping finite element procedure; turbomolecular pumps; Coupling circuits; Electromagnetic coupling; Finite element methods; Hysteresis motors; Induction motors; Magnetic analysis; Numerical models; Performance analysis; Rotors; Vacuum systems;

fLanguage

English

Publisher

ieee

Conference_Titel

Magnetics Conference, 2006. INTERMAG 2006. IEEE International

Conference_Location

San Diego, CA

Print_ISBN

1-4244-1479-2

Type

conf

DOI

10.1109/INTMAG.2006.374995

Filename

4262397