Poślizgowa charakterystyka admitancji stojana silnika indukcyjnego uzyskana przy zastosowaniu symulacji komputerowej
Artykuł w czasopiśmie
| Status: | |
| Warianty tytułu: |
Slip characteristic of induction motor admittance stator obtained with the application of computer simulation
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| Autorzy: | Zielińska Maria, Zieliński Wojciech |
| Rok wydania: | 2006 |
| Wersja dokumentu: | Drukowana | Elektroniczna |
| Język: | polski |
| Numer czasopisma: | 75 |
| Strony: | 47 - 51 |
| Efekt badań statutowych | NIE |
| Materiał konferencyjny: | NIE |
| Publikacja OA: | NIE |
| Abstrakty: | angielski |
| Slip characteristic of induction motor admittance is the admittance locus at varied slip and constant frequency of feeding voltage. Circle diagram can graphically represent the characteristic only in the case when electromagnetic parameters of a machine are constant. Circle diagram makes an important tool at the evalua-tion of an asynchronous motor operation. Based on the diagram it is possible to find for an arbitrary slip not only values of electrical parameters but also mechanical parameters such as torque, mechanical power and ro-tational speed. The paper presents a comparative analysis of classical methods for circle diagram elaboration and of their accuracy. Computer simulation of an admittance slip characteristic has been performed with the Matlab-Simulink software, based on dependences that determine admittance of a motor. The analysis concerns conditions when equivalent network parameters of an asynchronous motor are constant and the characteristic is represented by a circle. When electromagnetic parameters of a motor are not constant then the characteristic essentially differs from a typical circle diagram. It mainly concerns a squirrel-cage motor with closed slots in the rotor, fed with high-frequency voltage. In the mentioned case saturation of the closure occurs under the in-fluence of a leakage flux. It has been shown that a shape of the characteristic depends on many parameters of a motor as well as on the way the leakage reactance changes. |
