Open AccessCurrent sensor fault‐tolerant control strategy for surface‐permanent‐magnet‐synchronous motor drives based on improved full‐order sliding‐mode observer
Author(s) -
Khlaief Amor,
Saadaoui Oussama,
Abassi Moez,
Chaari Abdelkader
Publication year - 2022
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/tje2.12171
Subject(s) - control theory (sociology) , observer (physics) , converters , computer science , transient (computer programming) , inverter , fault tolerance , fault (geology) , fault detection and isolation , permanent magnet synchronous motor , sliding mode control , mode (computer interface) , control engineering , magnet , engineering , voltage , control (management) , actuator , physics , electrical engineering , artificial intelligence , distributed computing , quantum mechanics , nonlinear system , seismology , geology , operating system
This paper exhibits a sensorless speed control method based on full‐order‐sliding‐mode observer applied to a fault‐tolerant permanent‐magnet‐synchronous motor (PMSM) drive system. So, this paper proposes a rapid method of fault switch detection in the power converters aiming to make sure of the continuity of service despite the fault presence of an opening phase. In fact, the full‐order‐sliding‐mode observer (FO‐SMO) observer is used to replace the mechanical sensor and a redundant inverter leg is equally employed to replace the faulty leg. The proposed new fast fault diagnosis method has the features of a simple algorithm, independent of the transient states and being simply integrated without any additional sensors.