Numerical speed control of a current-fed asynchronous machine by measurement of supply voltages

Author

de Fornel, B. ; Bach, J.L. ; Hapiot, J.C. ; Pietrzak-David, M.

Author_Institution

Ã\x89cole Nationale SupÃ©rieure d´´Electrotechnique, d´´Electronique, d´´Informatique et d´´Hydraulique de Toulouse, Laboratoire d´´Electrotechnique et d´´Electronique Industrielle, INP, ERA no. 536, Toulouse, France

Volume

131

Issue

4

fYear

1984

fDate

7/1/1984 12:00:00 AM

Firstpage

165

Lastpage

169

Abstract

Theoretical and experimental results are presented, concerning a control law for the speed regulation of a current-fed asynchronous machine. This law, which defines the stator frequency in terms of supply voltages, enables the machine to operate in the four quadrants of the speed/torque plane and particularly during regenerative braking. It also allows the rotor-current frequency to be controlled, and hence the speed to be estimated with no mechanical sensors. The implementation of control laws and the speed regulation loop, based on the aforementioned speed estimation, is carried out by means of a digital computer.

Keywords

braking; electric machine analysis computing; frequency control; rotors; stators; synchronous machines; torque; velocity control; control law; current-fed asynchronous machine; digital computer; measurement of supply voltages; regenerative braking; rotor-current frequency; speed regulation; speed/torque plane; stator frequency; supply voltages;

fLanguage

English

Journal_Title

Electric Power Applications, IEE Proceedings B

Publisher

iet

ISSN

0143-7038

Type

jour

DOI

10.1049/ip-b:19840022

Filename

4643748