- Tytuł:
-
Diagnostyka maszyn elektrycznych w elektrowniach – przykłady praktyczne
Influence of motors type on electrical power parameters of rolling stand bar copper - Autorzy:
-
Jagieła, K.
Rak, J.
Kępiński, M.
Gała, M. - Powiązania:
- https://bibliotekanauki.pl/articles/1374877.pdf
- Data publikacji:
- 2005
- Wydawca:
- Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
- Tematy:
-
napęd walcarki
walcarka - Opis:
- The paper deals with comparative analysis of parameters describing the electric power drawn from a medium voltage industrial network by 2MW of nominal power electric drives of copper bars rolling mill. The comparison was possible in consequence of modernization of the rolling mill's main drive, which included replacement of the thyristor DC drive by an asynchronous drive fed from a DTC converter. The computational analysis of active, reactive, apparent and deformation power was conducted on the basis of recorded voltages and currents for both versions of the drives. Characteristic indices of the power quality were determined as spectra of the voltage and current harmonics as well as total harmonic distortion (THD) coefficients of the voltage and current. MATLAB and DASYLab software was used for measurements and computations. The results obtained from the analysis show that the controlled AC drive has smaller negative impact on the supply network in comparison with the equivalent thyristor DC drive. Consumption of the reactive power and deformation power was reduced respectively by order of magnitude and about 50%. It is a consequence of increased power factor and significant reduction of rms values of the first and higher harmonics of the current drawn from the network by the drive with a frequency converter comparing to the drive with a thyristor rectifier.
- Źródło:
-
Maszyny Elektryczne: zeszyty problemowe; 2005, 71; 65-70
0239-3646
2084-5618 - Pojawia się w:
- Maszyny Elektryczne: zeszyty problemowe
- Dostawca treści:
- Biblioteka Nauki
Artykuł