- Tytuł:
-
Sterowanie prądem wzbudzenia silników trakcyjnych lokomotyw kopalnianych
Control of the field current of the mine locomotives traction motors - Autorzy:
-
Dudek, R.
Kosiorowski, S.
Stobiecki, A.
Żuchowicz, M. - Powiązania:
- https://bibliotekanauki.pl/articles/2076371.pdf
- Data publikacji:
- 2007
- Wydawca:
- Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
- Tematy:
-
sterowanie prądem
pole magnetyczne
silnik trakcyjny
lokomotywa kopalniana - Opis:
- In the majority of electric trolley locomotives operated in Polish mines, a significant (3:1) main poles' field weakening in the traction machines is necessary. In the paper, special attention was paid to an analysis and results of laboratory tests of a transistor-based system designed for a pulse-mode control of the traction motors' excitation current of the locomotive type Ld31 (90 kW). A capacitor connected in parallel to the excitation winding of the traction motor is discharged through an resistor in the described system. Consequences of the significant differences in the current overload capacity of power transistors and SCR thyristors were presented. The relationships between a field weakening rate and an armature current for different switch duty ratios of the transistor were obtained on the basis of an approximate analysis of the system operation. The steady-state characteristic curves of the excitation current versus the armature current and power losses in the resistor were found using Maple computer algebra system. Results of the laboratory tests concerning the relationship between the excitation current and the armature current and selected oscillograms of the voltage and current waveforms were also shown.
- Źródło:
-
Maszyny Elektryczne: zeszyty problemowe; 2007, 77; 65-70
0239-3646
2084-5618 - Pojawia się w:
- Maszyny Elektryczne: zeszyty problemowe
- Dostawca treści:
- Biblioteka Nauki
Artykuł