INVESTIGATION BY SIMULATION OF MOTOR AND GENERATOR MATHEMATICAL MODELS FOR AN ELECTRICALLY EXCITED SYNCHRONOUS MACHINE RUNNING IN GENERATOR MODE

Autor/autori: Eng. Dan Claudiu RUS, Prof. Eng. Maria IMECS PhD, Lecturer Eng. Ioan Iov INCZE PhD, Lecturer Eng. Csaba SZABO PhD

Rezumat: In lucrare sunt prezentate ecuatiile generale ale masinii sincrone cu infasurare de excitatie, din care sunt deduse modelul matematic de motor, respectiv de generator in vedrea simularii in regim de generator. Generatorul sincron este antrenat de catre un motor de inductie cu rotor in colivie si controlat in cuplu si debiteaza pe o rezistenta trifazata pasiva rezistiv-inductiva. Sunt prezentate rezultatele simularii in cazul controlului scalar al generatorului in care reglarea amplitudinii tensiunii, respectiv a frecventei statorice sunt realizate independent in bucle separate.

Cuvinte cheie: generator sincron, model matematic de motor si de generator, simulare, control scalar.

Abstract: The paper presents the mathematical description of an electrically excited synchronous machine using generator and motor mathematical models. In simulation the synchronous machine is running in generator mode, it is driven by a squirrel-cage induction motor and generates energy on a passive resistive-inductive load. Simulation results are presented for a scalar controlled synchronous generator, in which the stator-voltage amplitude and frequency of the generator are independently controlled in two separated loops.

Keywords: synchronous generator, motor and generator mathematical model, input and output variables

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