Characteristics and optimal design of variable airgap linear force motors

Author

Leu, M.C. ; Scorza, E.V. ; Bartel, D.L.

Author_Institution

Dept. of Mech. Eng., New Jersey Inst. of Technol., Newark, NY, USA

Volume

135

Issue

6

fYear

1988

fDate

11/1/1988 12:00:00 AM

Firstpage

341

Lastpage

345

Abstract

An analytical model for predicting the characteristics of variable airgap linear force motors is developed. The model takes into account magnetic losses including the leakage and fringing effects and the reluctance existing at the contacts between permanent magnets and pole pieces. The model is validated by comparing its predicted characteristics with the results obtained from experiments and a finite element program. With the use of the modelled characteristics, computer programs based on the method of constrained steepest descent with state equations are developed for automating and optimising the design of linear force motors. Numerical studies are made for both minimisation of weight and minimisation of power consumption

Keywords

electric machine CAD; equivalent circuits; linear motors; magnetic circuits; optimisation; analytical model; computer programs; constrained steepest descent; design automation; fringing effects; leakage; linear force motors; magnetic losses; optimal design; permanent magnets; power consumption minimisation; reluctance; state equations; variable airgap; weight minimisation;

fLanguage

English

Journal_Title

Electric Power Applications, IEE Proceedings B

Publisher

iet

ISSN

0143-7038

Type

jour

Filename

6325