Matrix converter clamp current reconstruction for fault detection

Matrix converters offer advantages over traditional AC-AC conversion technologies in high temperature environments; however in system critical applications were operation is paramount, it is desirable for the converter to continue operation under fault conditions, albeit with degraded performance. There have been several works in literature on the subject of fault tolerant matrix converters however all of these methods require a method of fault localisation for continued operation in the fault condition. It is also desirable for the fault detection and localisation scheme to use existing sensors to minimise cost. This paper describes a method of fault detection and localisation using only the existing sensors used in the operation of the converter and information know by the converters modulator.