Wyszukiwarka
Abstrakt
Motor current derivatives contain useful information for control algorithms, especially in sensorless electric drives. The measurement of motor current derivatives in electric motors supplied by voltage source inverter can be performed using di/dt transducers. However, in such a solution additional sensors have to be installed, e.g. Rogowski coils. Another approach is to measure current derivatives indirectly – by oversampling the motor currents. In such a method special attention must be paid to determination of current sampling instants. Measurement triggering times must be recalculated in each voltage modulation period with regard to transistors switching. The paper presents different current sampling approaches. Considered oversampling algorithms were experimentally tested in sensorless PMSM drive. The impact of different sampling approaches on the accuracy of rotor position estimation has been discussed.
Cytuj jako
Pełna treść
- Wersja publikacji
- Accepted albo Published Version
- Licencja
-
otwiera się w nowej karcie
Słowa kluczowe
Informacje szczegółowe
- Kategoria:
- Publikacja w czasopiśmie
- Typ:
- artykuł w czasopiśmie wyróżnionym w JCR
- Opublikowano w:
-
Elektronika Ir Elektrotechnika
nr 20,
strony 23 - 26,
ISSN: 1392-1215 - Język:
- angielski
- Rok wydania:
- 2014
- Opis bibliograficzny:
- Jarzębowicz L.: Indirect Measurement of Motor Current Derivatives in PMSM Sensorless Drives// Elektronika Ir Elektrotechnika. -Vol. 20, nr. 7 (2014), s.23-26
- Weryfikacja:
- Politechnika Gdańska
wyświetlono 87 razy
Publikacje, które mogą cię zainteresować
Space vector modulation in multilevel inverters of the servo drives of the trajectory measurements telescopes
- V. Tomasov,
- A. Usoltsev,
- D. Vertegel
- + 1 autorów
Optimized Space-Vector Modulation Schemes for Five-Phase Precision Low-Speed Drives with Minimizing the Stator Current Ripple
- V. Tomasov,
- A. Usoltsev,
- D. Vertegel
- + 3 autorów