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.
Mengoni, M., Zarri, L., Tani, A., Serra, G., Casadei, D. (2016). Sensorless speed observer based on third-order spatial field harmonic for multiphase induction motor drives. Institute of Electrical and Electronics Engineers Inc. [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.
