Vol.8, No 1, 2009 pp. 165 - 172
UDC
621.313.3 621.391:681.32+004.4
CRITICAL SPEED-CAPACITANCE REQUIREMENTS FOR SELF-EXCITED INDUCTION GENERATOR
Milan Radić1, Zoran Stajić1, Dušan Arnautović2
1Department of Energetics, University of Niš, Faculty of Electronic Engineering, Serbia
E-mail: milan.radic@elfak.ni.ac.rs, zoran.stajic@elfak.ni.ac.rs
2Electrical Engineering Institute Nikola Tesla, Belgrade, Serbia, E-mail: adusan@ieent.org
Abstract.
A novel method for solving nonlinear algebraic equations describing behaviour of self-excited induction generator, based on the MATLAB Optimization Toolbox routines, is presented in the paper. Using this approach, critical rotor speed and excitation capacitance requirements under different loading conditions have been considered. Accuracy of prediction has been improved by including core losses into the calculations.
Key Words:
induction generator, self-excitation, MATLAB, fsolve
KRITIČNI ZAHTEVI U POGLEDU BRZINE I KAPACITIVNOSTI KOD SAMOPOBUDNOG ASINHRONOG GENERATORA
U radu je predstavljena nova metoda za rešavanje sistema nelinearnih jednačina kojima se opisuje ponašanje trofaznog samopobudnog asinhronog generatora, zasnovana na primeni optimizacionih rutina iz MATLAB Optimization Toolbox-a. Na bazi tog pristupa, razmatrani su kritični zahtevi u pogledu brzine rotora i kapacitivnosti pobudnih kondenzatora, koji moraju biti ispunjeni da bi stanje samopobuđenosti generatora bilo održivo pri različitim opterećenjima. Tačnost analize je povećana zahvaljujući uvažavanju gubitaka aktivne snage koji se javljaju u magnetnom kolu generatora.
Ključne reči:
asinhroni generator, samopobuda, MATLAB, fsolve.
