DocumentCode
911755
Title
Dynamic instability in permanent-magnet synchronous/stepping motors
Author
Pickup, I.E.D. ; Russell, A.P.
Author_Institution
University of Manchester, Department of Electronic and Electrical Engineering, Manchester, UK
Volume
134
Issue
2
fYear
1987
fDate
3/1/1987 12:00:00 AM
Firstpage
91
Abstract
An analytical study of dynamic instability in hybrid permanent-magnet stepping motors is described, the principal features of which can be applied, more generally, to a wide range of variable-frequency, permanent-magnet synchronous machines. The analysis enables the characteristics of electromagnetic damping torque coefficient against stepping frequency to be obtained for any specified practical value of rotor perturbation amplitude. From these characteristics the overall stability of the motor/drive combination can be deduced. Predicted and experimental results are presented for a 200 steps/rev, bifilar-wound, hybrid-type motor.
Keywords
machine theory; permanent magnet motors; stability; stepping motors; synchronous motors; torque; bifilar wound motor; dynamic instability; electromagnetic damping torque coefficient; hybrid permanent-magnet stepping motors; motor/drive combination; rotor perturbation amplitude; stability; stepping frequency; synchronous motor;
fLanguage
English
Journal_Title
Electric Power Applications, IEE Proceedings B
Publisher
iet
ISSN
0143-7038
Type
jour
DOI
10.1049/ip-b:19870012
Filename
4644311
Link To Document