This study proposes a broken rotor bar (BRB) fault diagnosis method for an induction motor using the sum of weighted Fourier series coefficients squares complex current as signal. First, confirms very narrow band-pass filter characteristics to derive specific frequency component. assists us in obtaining BRB signal that exists limited range. Second, magnitude is proportional slip and load condit...

A new algorithm is proposed in order to detect and quantify partially broken bars induction motors during start-up without load. In the qualification process, no threshold used. It uses principle of harmonic generated by bar stator current, it should vary with slip confirm failure provide more security diagnosis. severity index also proposed, based on maximum peaks Teager energy operator Gaussi...

The information of the fault frequency characteristics is great importance for all associated diag nostics. This requires a high-resolution spectrum analysis to achieve efficient monitoring machinery faults, especially while diagnosing rotor bar breakage under light load conditions, because frequencies almost overlap with fundamental. In this context, rather than looking several bands are obser...

In this paper, we propose an off-the-grid compressive sensing based method to detect brokenbar fault in squirrel-cage induction motors. To validate our method, we first build a dynamic model of squirrel-cage induction motor using multi-loop equivalent circuit to simulate motor current under fault conditions. We then develop an off-the-grid compressive sensing algorithm to extract the fault char...

Computer simulation of electric motor operation is particularly useful for gaining an insight into their dynamic behaviour and electro-mechanical interaction. A suitable model enables motor faults to be simulated and the change in corresponding parameters to be predicted without physical experimentation. This paper presents both a theoretical and experimental analysis of asymmetric stator and r...

Retention of a surgical item is a preventable event that can result in patient injury. AORN's "Recommended practices for prevention of retained surgical items" emphasizes the importance of using a multidisciplinary approach for prevention. Procedures should include counts of soft goods, needles, miscellaneous items, and instruments, and efforts should be made to prevent retention of fragments o...

This paper presents a methodology for the detection of broken rotor bar fault and power quality (PQ) disturbances in the supply to induction motor. These faults lead to increase in the temperature and decrease in the efficiency of the induction motor. Wavelet transform is applied to the stator current, for the extraction of the signature of the fault. These wavelet coefficients are fed as input...