Nonlinear analysis of a 1st-order thyristor-bridge control system. Use of difference equations and transition mapping
作者:
J.O.Flower,
P.A.Hazell,
期刊:
Proceedings of the Institution of Electrical Engineers
(IET Available online 1971)
卷期:
Volume 118,
issue 10
页码: 1511-1516
年代: 1971
DOI:10.1049/piee.1971.0277
出版商: IEE
数据来源: IET
摘要:
By considering the solution of the differential equation governing the current delivered, via a thyristor bridge, to a seriesR-Lload, an exact nonlinear difference equation relating the current at consecutive firing instants is established. The behaviour of the system, both statically and dynamically, is thereby examined and use is made of transition-mapping concepts. Perturbational analysis is performed to linearise the equation and it is demonstrated that the system can be considered as a discrete controller with proportional and derivative control having a varying time constant. Computer simulation and experimental results are presented as evidence of the validity of the developed models.
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