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Fault detection and fault accommodation as well as fault tolerance are important issues in closed-loop controlled three-phase converters. For such systems, power semiconductors and sensors are the most affected components by the occurrence of failures. Therefore, fault diagnosis and remedial operating strategies involving such components are highly required. In this work we propose a new reliable...
A new approach for current sensor fault detection and isolation (FDI) for permanent magnet synchronous motor (PMSM) drives is presented. Contrary to the classical approaches for sensors fault diagnosis, based on residual generation through observers or parity equations, the proposed technique uses the average normalised machine-phase currents. The main advantages of this approach are that it does...
Fault-diagnosis and fault-tolerant control of modern wind turbines with minimum hardware requirements are mandatory features in order to increase the reliability and availability levels with low costs. This paper presents a fault-tolerant permanent magnet synchronous generator (PMSG) drive for wind turbine systems, allowing to automatically reconfigure the drive operation when a current sensor fault...
Incremental encoder is widely used as a rotor speed and/or position sensor for electric machines control. It gives the exact rotor speed and/or position for electric motors closed-loop operating. However, a faulty sensor may lead to the loss of motor control. In this paper, an improved detection of encoder information loss fault in Permanent Magnet Synchronous Motor (PMSM) drives is presented. The...
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