Online parameter tracking in PMSM-control schemes with and without encoder

摘要

The encoderless operation based on fundamental wave models of the PMSM requires the knowledgernof the machine parameters to ensure an accurate estimation of the rotor position. As the statorrnresistance and permanent rotor flux are temperature dependent, these values need to be adapted tornensure a good performance of the drive. In this paper, an online parameter tracking method for thernPMSM is introduced, which is able to identify the temperature dependent parameters in high dynamicrnapplications with continuously changing speed and torque. It works in both modes of operation with asrnwell as without mechanical angle encoder.