Vol.11, No 1, 2012 pp. 57 - 67
UDC
621.333 681.53
PERFORMANCE CHARACTERISTICS OF A THREE-PHASE SELF-EXCITED INDUCTION GENERATOR DRIVEN BY REGULATED CONSTANT SPEED TURBINE
Milan Radić1, Zoran Stajić1, Nenad Floranović2
1University of Niš, Faculty of Electronic Engineering, Department of Energetics, Serbia
2Research & Development Center "ALFATEC" d.o.o. Niš, Serbia
E-mail: milan.radic@elfak.ni.ac.rs
Abstract.
In this paper, theoretical background and the method for easy calculation of static performance characteristics of a three-phase self-excited induction generator under varying loading conditions have been presented. Symmetrical, three-phase load of resistive type, constant rotor speed and constant value of excitation capacitors have been considered. Calculated characteristics have been verified through experiment in laboratory, using three-phase squirrel-cage 1.5 kW induction machine. Good agreement between experimentally obtained results and calculated performance curves has been achieved.
Key Words:
self-excited, induction generator, constant speed, turbine.
RADNE KARAKTERISTIKE TROFAZNOG SAMOPOBUDNOG ASINHRONOG GENERATORA POKRETANOG REGULISANOM TURBINOM KONSTANTNE BRZINE
U radu je prikazana teorijska osnova i metod za jednostavan proračun stacionarnih radnih karakteristika trofaznog samopobudnog asinhronog generatora koji je opterećen promenljivim potrošačem aktivnog karaktera. Razmatran je režim rada karakterisan konstantnom, regulisanom brzinom rotora i konstantnom kapacitivnošću pobudnih kondenzatora, uz pretpostavku simetričnog opterećenja po fazama. Proračunate karakteristike su proverene eksperimentalnim putem u laboratoriji, na trofaznoj asinhronoj mašini sa kaveznim rotorom nazivne snage 1.5 kW. Postignuto je dobro međusobno slaganje vrednosti dobijenih računskim i eksperimentalnim pristupom.
Ključne reči:
samopobudni, asinhroni generator, konstantna brzina, turbina
