This paper presents an electric drive consisting of a multiphase induction motor fed by a multiphase inverter. The control system is similar to that of a traditional field-oriented control for three-phase motors, but the machine speed is estimated by a novel sensorless observer. Since multiphase motors with M phases (M is supposed odd) have the capability of controlling the odd spatial harmonics of the magnetic field up to the (M-2)th order, the developed observer excites the third-order spatial harmonic of the magnetic field to estimate the rotor speed. Simulation results are provided to assess the performance of the observer.
Sensorless speed observer based on third-order spatial field harmonic for multiphase induction motor drives / Mengoni, M.; Zarri, L.; Tani, A.; Serra, G.; Casadei, D.. - ELETTRONICO. - (2016), pp. 7518792.1-7518792.6. (Intervento presentato al convegno 7th IEEE International Symposium on Sensorless Control for Electrical Drives, SLED 2016 tenutosi a fji nel 5-6 june 2016) [10.1109/SLED.2016.7518792].
Sensorless speed observer based on third-order spatial field harmonic for multiphase induction motor drives
MENGONI, MICHELE;ZARRI, LUCA;TANI, ANGELO;SERRA, GIOVANNI;CASADEI, DOMENICO
2016
Abstract
This paper presents an electric drive consisting of a multiphase induction motor fed by a multiphase inverter. The control system is similar to that of a traditional field-oriented control for three-phase motors, but the machine speed is estimated by a novel sensorless observer. Since multiphase motors with M phases (M is supposed odd) have the capability of controlling the odd spatial harmonics of the magnetic field up to the (M-2)th order, the developed observer excites the third-order spatial harmonic of the magnetic field to estimate the rotor speed. Simulation results are provided to assess the performance of the observer.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
