A New Torque Observation Technique for a PMSM Considering Unknown Magnetic Conditions

A new technique to observe the electromagnetic torque of a permanent magnet synchronous machine based on flux linkage estimation considering unknown magnetic condition is presented in this article. The magnetic behavior uncertainties including permanent magnet flux, linear self-inductances, linear c...

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Bibliographic Details
Published in:IEEE transactions on industrial electronics (1982) 2021-03, Vol.68 (3), p.1961-1971
Main Authors: Taherzadeh, Mehdi, Hamida, Mohamed Assaad, Ghanes, Malek, Koteich, Mohamad
Format: Article
Language:English
Subjects:
Algorithms
Automatic
Electric power
Engineering Sciences
Flux
Flux estimation
Kalman-like observer
Magnetic flux
Magnetic properties
magnetic saturation
Observers
permanent magnet synchronous machine (PMSM)
Permanent magnets
Rotors
Saturation magnetization
Stators
Synchronous machines
Torque
torque estimation
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Summary:A new technique to observe the electromagnetic torque of a permanent magnet synchronous machine based on flux linkage estimation considering unknown magnetic condition is presented in this article. The magnetic behavior uncertainties including permanent magnet flux, linear self-inductances, linear coupling-effect inductances, and magnetic saturations are taken into account as a set of new variables in the model of machine. Regarding the new model, an appropriate observer based on Kalman-like algorithm is proposed to observe those variables. Then, the variables are collected and used to estimate the flux linkages and consequently the machine torque. The observability as well as the stability of the observer for the proposed system is theoretically investigated. The simulation and experimental results are represented for different scenarios. They prove the effectiveness of the proposed method.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2020.2972429