Title :
Influence of Feedback Filter on System Stability Area in Digitally Controlled Thyristor Converters
Author :
Luo, Fang L. ; Hill, Roland J.
Author_Institution :
Department of Engineering, University of Cambridge, Trumpington Street, Cambridge CB2 lPZ, England on leave from the Automation Research Institute of the Ministry of Metallurical Industry, Beijing, China.
Abstract :
It is known that a continuous-data closed-loop control system tends to become unstable when the feedback circuit includes a delay such as that caused by a feedback filter or detector. This problem is, however, not dealt with extensively in the literature. The influence of a feedback filter on system stability area in a digital control system is considered. A new stability area has been found, whose extent is confirmed both by experimental investigation and theoretical calculation.
Keywords :
Bridge circuits; Circuit stability; Control systems; Delay; Detectors; Digital control; Digital filters; Feedback circuits; Thyristors; Transfer functions;
Journal_Title :
Industry Applications, IEEE Transactions on
DOI :
10.1109/TIA.1986.4504676
