Multiple controller AVR for a microalternator

Author

Irwin, G.W. ; Flynn, D. ; Brown, M.D.

Author_Institution

Sch. of Electr. & Electron. Eng., Queen´s Univ., Belfast, UK

fYear

2001

fDate

4-7 Sept. 2001

Firstpage

2318

Lastpage

2321

Abstract

A global non-linear model of the excitation loop dynamics of a synchronous generator has been constructed from five second-order ARX sub-models and their normalised Gaussian validity functions. Each identified local model was then used for Generalised Minimum Variance (GMV) control design, with the individual outputs weighted by the corresponding model validity functions and summed for overall control. The resultant multiple controller was successfully implemented for automatic voltage regulation (AVR) on a laboratory micro-machine. Encouraging experimental responses to a three-phase short circuit were obtained compared to a conventional fixed-gain AVR.

Keywords

Gaussian processes; alternators; control system synthesis; machine control; small electric machines; voltage control; GMV control design; automatic voltage regulation; conventional fixed-gain AVR; excitation loop dynamics; generalised minimum variance control design; global nonlinear model; laboratory micromachine; local model; microalternator; model validity function; multiple-controller AVR; normalised Gaussian validity functions; resultant multiple-controller; second-order ARX sub-model; synchronous generator; three-phase short circuit; Adaptation models; Control systems; Integrated circuit modeling; Laboratories; Synchronous generators; Transient analysis; Voltage control; Control applications; identification for control; neural networks; power systems and power plants;

fLanguage

English

Publisher

ieee

Conference_Titel

Control Conference (ECC), 2001 European

Conference_Location

Porto

Print_ISBN

978-3-9524173-6-2

Type

conf

Filename

7076271