The article presents the combination of a low-speed model (INFORM method) and a specially adapted high speed model (voltage model or EMF model) for covering the full speed range of sensorless permanent magnet (PM) synchronous motor drives. Both models generate "measuring information" for a linear observer, modelling the mechanical structure of the motor. A special feedback loop is introduced, coupling back the observer information to the integrating voltage model. Thus, a stable operation with high robustness against parameter uncertainties and low frequency disturbances is achieved.
In dem vorliegenden Beitrag wird die Kombination eines Tiefdrehzahlmodells (INFORM-Verfahren) mit einem adaptierten Hochdrehzahlmodell (Spannungsmodell, EMK-Modell) für den sensorlosen Betrieb von Permanentmagnet-Synchronmotoren im gesamten Drehzahlbereich vorgestellt. Beide Modelle erzeugen "Messinformation" für einen linearen Beobachter, welcher die mechanische Struktur des Motors modelliert. Eine besondere Modellrückkopplung vom Beobachterausgang zum integrierenden Spannungsmodell wird verwendet. Damit wird ein stabiler Betrieb mit hoher Robustheit gegen Parameterunsicherheiten und tieffrequenten Störungen erreicht.
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References
Consoli, A., Scarcella, G., Testa, A. (2001): Industry applications of zero speed sensorless control techniques for PM synchronous motors. IEEE Trans. on Industry Applications, Vol. 37, No. 2 (2001): 513–521.
Corley, M., Lorenz, R. (1996): Rotor position and velocity estimation for permanent magnet synchronous machines at standstill and high speed. IEEE IAS Conf. Proc. 1996: 36–41.
Furuhashi, T., Sangwongwanich, S., Okuma, S. (1992): A position- and velocity-sensorless control for brushless DC motors using an adaptive sliding mode observer. IEEE Trans. on Industrial Electronics, Vol. 39 (1992): 89–95.
Kalman, R. E. (1960): A new approach to linear filtering and prediction problems. Trans. ASME, J. Basic Eng., Vol. 82 (1960): 35–44.
Preusser, T. (2002): Neues sensorloses Regelverfahren für Synchronmaschinen. Antriebstechnik 41, Nr. 7, July 2002: 20–23.
Schrödl, M. (1988): Detection of the rotor position of a permanent magnet synchronous machine at standstill. Int. Conf. on Electrical Machines, ICEM, Italy 1988: 195–197.
Schrödl, M. (1990): Operation of the permanent magnet synchronous machine without a mechanical sensor. 4th IEEE Conf. on Power Electronics and Variable-Speed Drives, London 1990: 51–56.
Schrödl, M. (1992): Sensorless control of AC machines. Habilitationsschrift, VDI-Fortschrittsberichte Nr. 117, Reihe 21.
Schrödl, M. (1993): Sensorless control of permanent-magnet synchronous machines at arbitrary operating points using a modified "INFORM" flux model. European Trans. on Power Engineering (ETEP), Vol. 3, No. 4 (1993): 277–283.
Schrödl, M. (2003): Statistic properties of the INFORM method in highly dynamic sensorless PM motor control applications down to standstill. European Power Electronics and Drives (EPE Journal), Vol. 13, Nr. 3 (2003): 22–29.
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Schrödl, M., Hofer, M. & Staffler, W. Combining INFORM method, voltage model and mechanical observer for sensorless control of PM synchronous motors in the whole speed range including standstill. Elektrotech. Inftech. 123, 183–190 (2006). https://doi.org/10.1007/s00502-006-0340
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DOI: https://doi.org/10.1007/s00502-006-0340