Performance comparison of sensor fault-tolerant control strategies for PMSG-based marine current energy converters

Sensor fault is one of the most frequent causes leading to the failure of renewable energy conversion system. Several fault-tolerant control strategies have been proposed to maintain the operation of these systems in the case of sensor unavailability. This paper compares their fault-tolerance efficiency and their ability to be applied in real-world applications. This comparison is based on their performances on a direct-drive permanent magnet synchronous generator (PMSG)-based variable speed marine current energy converter under the swell effect.