- Tytuł:
-
Zastosowanie estymatora rezystancji uzwojenia stojana i wirnika silnika indukcyjnego
Application of observer for resistance changes of induction motor stator and rotor - Autorzy:
- Mnich, T.
- Powiązania:
- https://bibliotekanauki.pl/articles/1375025.pdf
- Data publikacji:
- 2005
- Wydawca:
- Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
- Tematy:
-
rezystancja uzwojenia
schemat zastępczy
silniki indukcyjne
maszyny indukcyjne - Opis:
- In the paper the application of the thermal equivalent diagram method to identification of stator and squirrel cage windings resistance thermal increases in the induction motor. Basing on stator and rotor windings resistance thermal increase, to obtain the change of induction motor rotor speed, caused by increase of windings temperaturę in the load and overload state. Induction motor thermal model is presented, applied to identification of squirrel cage and stator windings resistance changes in transient states. In fig. 4 and fig.5 was presented comparison of stator windings and squirrel cage temperaturę, from simulation and measurement. Comparison of induction motor windings average temperature was performed, the temperatures was obtained from laboratory measurements, and from computer simulation in transient state, performed with use of thermal equivalent diagrams the method. The method takes into consideration not only changes of the squirrel cage and winding of the stator temperatures caused by the passage of current in a rotor but also the influence of other losses generated in magnetic circuits and created by bearing friction. Thermal equivalent diagram which was applied to identification of windings temperature, can bee also applied to temperature monitoring in another elements of induction motor e.g. stator and rotor magnetic circuits, shields bearings. The thermal monitoring can take place in thermal transient state and with some modifications in steady state. The system takes into consideration the influence of the majority of the losses in a machine on the squirrel cage temperature. Identification is carried out owing to easily measurable quantities such as current and voltage of a stator. Values of these resistances will by used to improve precision of real time rotor speed calculation. The results presented in fig.8 show improvement in rotor speed calculations.
- Źródło:
-
Maszyny Elektryczne: zeszyty problemowe; 2005, 72; 235-240
0239-3646
2084-5618 - Pojawia się w:
- Maszyny Elektryczne: zeszyty problemowe
- Dostawca treści:
- Biblioteka Nauki
Artykuł