High Dynamic Electromechanical Conversion Model for PMSM Drives

Several emerging applications require fast and precise torque control. Torque measurements are still expensive, bulky and delicate. On the other hand, estimation techniques are all valid in principle, but their accuracy is largely affected by model identification and commissioning. This paper proposes an accurate model for the electromechanical conversion mechanism in a Permanent Magnet Synchronous Motor drive, based on voltage and current signals. It includes all motor losses, to get an enhanced overall accuracy. The key-feature is the commissioning procedure, based on a set of off-line measurements. The procedure details, as well as the successful experimental results on a real laboratory prototype, are reported in the paper.