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This paper presents a fault-tolerant converter intended for AC regenerative drives requiring improved reliability and availability. The standard six-switch three-phase converter is rearranged in order to obtain a four-switch tree-phase converter (FSTPC) during post-fault operation. Thus, its performance relies heavily on the fault diagnostic technique to trigger the remedial procedures, and on the...
This paper presents a new fault diagnostic technique applied to switched reluctance motor (SRM) drives. A fault is detected when the measured amplitude of the DC bus current differs from its expected amplitude, assuming normal operating conditions. The information about phase currents amplitudes and the control states of all power switches permit to easily estimate the amplitude of the power converter...
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