New integration algorithms for estimating motor flux over a wide speed range

Author

Hu, Jun ; Wu, Bin

Author_Institution

Dept. of Electr. & Comput. Eng., Ryerson Polytech. Univ., Toronto, Ont., Canada

Volume

13

Issue

5

fYear

1998

fDate

9/1/1998 12:00:00 AM

Firstpage

969

Lastpage

977

Abstract

Three new integration algorithms for motor flux estimation are proposed in this paper. These algorithms are developed for use in high-performance sensorless AC motor drives. The first algorithm is used to elaborate the basic operating principle. The second one is designed for the drives that require a constant air-gap flux during operation. The third algorithm, in which an adaptive controller is used, can have wide industrial applications. The proposed algorithms can effectively solve the problems associated with pure integrators. These algorithms can be used to accurately measure the motor flux including its magnitude and phase angle over a wide speed range (1:100). The provenance of the algorithms is investigated, compared, and verified experimentally

Keywords

AC motor drives; adaptive control; air gaps; machine control; magnetic flux; magnetic variables measurement; parameter estimation; adaptive controller; basic operating principle; constant air-gap flux; flux magnitude; flux phase angle; high-performance sensorless AC motor drives; integration algorithms; motor flux estimation; motor flux measurement; AC motors; Adaptive control; Air gaps; Current measurement; Cutoff frequency; DC motors; Filters; Motor drives; Velocity measurement; Voltage;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/63.712323

Filename

712323