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.

Verrelli, C.m., Carfagna, E., Frigieri, M., Crinto, A.s., Loreranzani, E. (2022). A new Bernard–Praly-like observer for sensorless IPMSMs. AUTOMATICA, 140 [10.1016/j.automatica.2022.110266].

A new Bernard–Praly-like observer for sensorless IPMSMs

Verrelli C. M.;
2022-01-01

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
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore ING-INF/04 - AUTOMATICA
English
Adaptive observer
Interior Permanent Magnet Synchronous Motors
Persistency of excitation
Sensorless control
Verrelli, C.m., Carfagna, E., Frigieri, M., Crinto, A.s., Loreranzani, E. (2022). A new Bernard–Praly-like observer for sensorless IPMSMs. AUTOMATICA, 140 [10.1016/j.automatica.2022.110266].
Verrelli, Cm; Carfagna, E; Frigieri, M; Crinto, As; Loreranzani, E
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/331315
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