A slight extension of the global Bernard–Praly gradient adaptive observer – originally presented for nonsalient-pole surface Permanent Magnet Synchronous Motors (PMSMs) and recently proved to own local exponential convergence properties under well-known observability conditions – is here designed and proposed for Interior Permanent Magnet Synchronous Motors (IPMSMs) (with relatively small saliency) in the case in which the q-axis current is constant. It guarantees local exponential estimation – from stator current and voltage measurements – of both the stator fluxes and the sinusoidal/co-sinusoidal functions of the motor electrical angle, with no modification of the previous persistency of excitation condition requirements. Such an extension complements – at least locally – a previous analysis concerning IPMSMs under constant d-axis current. Applications to the sensorless control of IPMSMs (with realistic simulations) are included.

A new Bernard–Praly-like observer for sensorless IPMSMs / Verrelli, C. M.; Carfagna, E.; Frigieri, M.; Crinto, A. S.; Lorenzani, E.. - In: AUTOMATICA. - ISSN 0005-1098. - 140:(2022), pp. 110266-110266. [10.1016/j.automatica.2022.110266]

A new Bernard–Praly-like observer for sensorless IPMSMs

Carfagna E.;Lorenzani E.
2022

Abstract

A slight extension of the global Bernard–Praly gradient adaptive observer – originally presented for nonsalient-pole surface Permanent Magnet Synchronous Motors (PMSMs) and recently proved to own local exponential convergence properties under well-known observability conditions – is here designed and proposed for Interior Permanent Magnet Synchronous Motors (IPMSMs) (with relatively small saliency) in the case in which the q-axis current is constant. It guarantees local exponential estimation – from stator current and voltage measurements – of both the stator fluxes and the sinusoidal/co-sinusoidal functions of the motor electrical angle, with no modification of the previous persistency of excitation condition requirements. Such an extension complements – at least locally – a previous analysis concerning IPMSMs under constant d-axis current. Applications to the sensorless control of IPMSMs (with realistic simulations) are included.
2022
140
110266
110266
A new Bernard–Praly-like observer for sensorless IPMSMs / Verrelli, C. M.; Carfagna, E.; Frigieri, M.; Crinto, A. S.; Lorenzani, E.. - In: AUTOMATICA. - ISSN 0005-1098. - 140:(2022), pp. 110266-110266. [10.1016/j.automatica.2022.110266]
Verrelli, C. M.; Carfagna, E.; Frigieri, M.; Crinto, A. S.; Lorenzani, E.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1332340
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