Prof. Eng. Mihai IORDACHE, PhD, Prof. Eng. Lucia DUMITRIU, PhD, Lecturer Eng. Dragos NICULAE, PhD, Prof. Eng. Lucian MANDACHE, PhD
Rezumat
Lucrarea prezinta o noua metoda de estimare a unor parametri ai motoarelor cu inductie, bazata pe rezultatele
unor masurari realizate asupra sistemul real. Se estimeaza parametrii care sunt dificil sau imposibil sa fie masurati in mod
direct. Pornind de la schema echivalenta a unei faze a motorului functionand in regim sinusoidal si neglijand saturatia
circuitului magnetic, se genereaza, folosind metoda nodala modificata, expresia simbolica a impedantei de intrare in
domeniul operational. Parametrii doriti se calculeaza printr-un algoritm iterativ bazat pe metoda minimizarii erorii de iesire,
unde parametrii de interes sunt variabilele unui sistem de ecuatii independente.
Cuvinte cheie: masina de inductieestimarea aparametrilormetoda minimizarii erorii de iesirefunctie de transfer
Abstract
Our paper present a new method to estimate the induction motor parameters based on some measurements
performed on the real system, the parameters of interest being those which are difficult or impossible to be measured
directly. Starting from the equivalent scheme on a phase of the induction motor in sinusoidal behavior and neglecting the
saturation phenomena, we generate the driving-point impedance (the input impedance) in full symbolic form, obtaining an
appropriate frequency space representation based on the complex or Laplace modified nodal equations (MNE)
Keywords: induction machineparameter estimationoutput error methodtransfer function
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