Abstract
This paper presents a solution for identifying the variance of high-speed Permanent Magnet Synchronous Motor (PMSM) parameters in different states. The proposed method is based on the Model Reference Adaptive System (MRAS) and implements vector control. Flux weakening is used to ensure the functionality of the machine above the nominal speed (25,000 RPM) up to the maximal speed 42,000 RPM. The estimation method allows fast online parameter estimation. The estimated parameters have been verified experimentally, and the obtained results are in good agreement with other identification methods. Specific issues in modeling of high-speed machines are also addressed in the paper and a novel approach to closed loop PMSM control system stability analysis is proposed.
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