This paper presents an adaptive observer for speed sensorless field-oriented control of interior permanent magnet (IPM) synchronous motors. The observer detects the rotor magnet flux components in the two-phase stationary reference frame using the motor electrical equations. The motor speed is identified by a model reference adaptive scheme using an additional equation obtained by a Lyapunov function. The analytical development of the observer is fully explained. The convergence of the estimates at low speeds and standstill is achieved through the assistance of a high frequency signal injection technique. Realistic simulations accounting for the inaccuracy of an actual digital signal processor (DSP) implementation are presented and discussed.

Speed Sensorless Control of an Interior PM Synchronous Motor

PETRELLA, Roberto;
2002

Abstract

This paper presents an adaptive observer for speed sensorless field-oriented control of interior permanent magnet (IPM) synchronous motors. The observer detects the rotor magnet flux components in the two-phase stationary reference frame using the motor electrical equations. The motor speed is identified by a model reference adaptive scheme using an additional equation obtained by a Lyapunov function. The analytical development of the observer is fully explained. The convergence of the estimates at low speeds and standstill is achieved through the assistance of a high frequency signal injection technique. Realistic simulations accounting for the inaccuracy of an actual digital signal processor (DSP) implementation are presented and discussed.
0-7803-7421-5
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11390/687068
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