Modern control techniques for Permanent Magnet Synchronous Motor (PMSM) drive include field oriented control without any mechanical shaft sensor. The estimation of the speed and rotor position by an Extended Kalman Filter (EKF) represents an effective solution, and some experimental prototypes have already been carried out. This paper presents the results of an analysis of the sensitivity of the EKF to the electrical parameter variations, that is one of the unresolved problems that still obstructs the way to a widespread industrial application of the technique. In particular, the link among the parameter mismatching and the steady state non-zero values of the EKF innovation quantities have been investigated, and the effectiveness of the analysis has been tested by an extended simulation session.
Parameter Sensitivity of the Kalman Filter Applied to a Sensorless Synchronous Motor Drive
BOLOGNANI, SILVERIO;ZIGLIOTTO, MAURO
1995
Abstract
Modern control techniques for Permanent Magnet Synchronous Motor (PMSM) drive include field oriented control without any mechanical shaft sensor. The estimation of the speed and rotor position by an Extended Kalman Filter (EKF) represents an effective solution, and some experimental prototypes have already been carried out. This paper presents the results of an analysis of the sensitivity of the EKF to the electrical parameter variations, that is one of the unresolved problems that still obstructs the way to a widespread industrial application of the technique. In particular, the link among the parameter mismatching and the steady state non-zero values of the EKF innovation quantities have been investigated, and the effectiveness of the analysis has been tested by an extended simulation session.
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