Sensorless algorithms for Permanent Magnet Synchronous Motor (PMSM) are generally divided in methods for the low speed region and methods for the medium-high speed region. Algorithms based on high frequency injection show a good behavior for low motor speed, nevertheless voltage injection is associated to loud acoustic noise and additional losses. On the contrary, methods based on back-electromotive force and on rotor flux observer are passive methods (i.e. they do not require additional voltage injection); however they guarantees high performance only in the medium-high speed region. In this paper, rotor flux observer based sensorless algorithm performance is analyzed, specially focusing on behavior at low speed. No-load, linear torque, quadratic torque and compressor-type torque load is experimentally tested.

An Improved Low-Noise Sensorless PMSM Drive able to Face Highly Intermittent Load Torque

Marchesoni M.;Passalacqua M.;Vaccaro L.;
2019

Abstract

Sensorless algorithms for Permanent Magnet Synchronous Motor (PMSM) are generally divided in methods for the low speed region and methods for the medium-high speed region. Algorithms based on high frequency injection show a good behavior for low motor speed, nevertheless voltage injection is associated to loud acoustic noise and additional losses. On the contrary, methods based on back-electromotive force and on rotor flux observer are passive methods (i.e. they do not require additional voltage injection); however they guarantees high performance only in the medium-high speed region. In this paper, rotor flux observer based sensorless algorithm performance is analyzed, specially focusing on behavior at low speed. No-load, linear torque, quadratic torque and compressor-type torque load is experimentally tested.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11567/1003582
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