Extended Electro Motive Force Observers in the estimated synchronous reference frame allow to estimate rotor position at medium and high speeds for Interior Permanent Magnet Synchronous Machines. This paper focuses on the analysis of the dynamic performances of these observers. Use of complex vector modeling allows to demonstrate that these performances are speed dependent. In order to overcome this problem, a Complex Vector Observer is proposed. It is proven that this structure achieves good robustness against load torque and speed variations over different operating conditions. An improved phase detector is also presented, to solve the common speed reversal problems of the back-EMF based methods.
Evaluation of extended electro motive force observer dynamic performances using complex vectors / Elsman, A.; Capponi, F. G.; De Donato, G.; Caricchi, F.. - (2019), pp. 1-6. (Intervento presentato al convegno 10th IEEE International symposium on sensorless control for electrical drives, SLED 2019 tenutosi a Turin; Italy) [10.1109/SLED.2019.8896237].
Evaluation of extended electro motive force observer dynamic performances using complex vectors
Elsman A.;Capponi F. G.;De Donato G.;Caricchi F.
2019
Abstract
Extended Electro Motive Force Observers in the estimated synchronous reference frame allow to estimate rotor position at medium and high speeds for Interior Permanent Magnet Synchronous Machines. This paper focuses on the analysis of the dynamic performances of these observers. Use of complex vector modeling allows to demonstrate that these performances are speed dependent. In order to overcome this problem, a Complex Vector Observer is proposed. It is proven that this structure achieves good robustness against load torque and speed variations over different operating conditions. An improved phase detector is also presented, to solve the common speed reversal problems of the back-EMF based methods.File | Dimensione | Formato | |
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