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In order to decrease the cost and allow the Permanent-magnet synchronous motor (PMSM) control system to continue operating under faulty conditions, the development of fault-tolerant control becomes especially important [1]-[4]. In general, when the fault occurs, the fault-tolerant control can be implemented by the real-time and effective detection, localization, and isolation for faulty switches,...
This paper proposes a technique able to detect and isolate multiple open-circuit faults of power switches in an MMC. Based on a sliding mode observer (SMO), the basic idea of this FDI method is to compare the observed states with the measured states. The fault occurrence is detected when the difference between the observed and measured arm current is larger than a threshold value; while a cell is...
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