- Tytuł:
- Influence of the dead time effect of inverters on the control of sensorless induction motor drives
- Autorzy:
-
Piotuch, R.
Pałka, R. - Powiązania:
- https://bibliotekanauki.pl/articles/1372856.pdf
- Data publikacji:
- 2010
- Wydawca:
- Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
- Tematy:
-
maszyna asynchroniczna klatkowa
sterowanie bezczujnikowe
falownik napięcia
czas martwy tranzystorów - Opis:
- MRAS type flux and speed estimators are very popular in the sensorless induction motor drives. The aim of this article is to analyze the influence of a dead time effect on the work of a classical MRAS structure in a sensorless induction motor drive system. To avoid short circuits in a DC link of a voltage source inverter, there are introduced so called dead times between switching of a complementary power transistors in each leg of the inverter. This causes two harmful effects: loss of fundamental voltage, and low-frequency harmonic distortion. Voltage calculated in the control algorithm differs from the one provided to the stator windings. Calculated voltage is provided to MRAS structure which receives incorrect information on the phase voltage. This leads to improper work of flux reference estimator and also whole control structure. In this paper there are presented the simulation results of influence of a dead time effect on a work of MRAS structure in case of rotor flux linkage and angular speed. Such tests seems to be very important because in extreme cases this effect can lead to instability of a drive system.
- Źródło:
-
Maszyny Elektryczne: zeszyty problemowe; 2010, 88; 129-133
0239-3646
2084-5618 - Pojawia się w:
- Maszyny Elektryczne: zeszyty problemowe
- Dostawca treści:
- Biblioteka Nauki
Artykuł