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Soft Set-Based Switching Faults Decision Making in DTC Induction Motor Drives
(World Scientific Publ Co Pte Ltd, 2015) Turkmenoglu, Veli; Aktas, Mustafa; Karatas, Serkan; Okumus, Halil Ibrahim
This paper introduces a method for detection and identification of IGBT-based drive open-circuit fault of DTC induction motor drives. The detection mechanism is based on soft set theory and wavelet decomposition, if it is detailed, (Lambda) over bar -product decision making method and sym2 wavelet decomposition have been used in the detection mechanism. In this method, the stator currents have been used as an input to the system. The stator current has been used for the detection of the fault. The signal analysis has been performed up to the six level details wavelets decomposition. Faulty switch is detected by applying soft set theory to sixth level wavelets transformation. This is the first time applied to inverter in induction motor drives fault detection. The results demonstrate that the proposed fault detection and diagnosis system has very good capabilities.