[PDF] Top 20 Motor current signal analysis using a modified bispectrum for machine fault diagnosis

... of motor equivalent circuit impedance at supply frequency, I l and I r are the RMS values of the lower sideband and the upper sideband components respectively, which result from the interaction between the modulus ... See full document

... spectrum using dataset from phase ...of current signals, whereas the slip is estimated using the frequency values extracted from power spectrum based on ...and fault levels, whereas frequency ... See full document

... for fault diagnosis of induction motor because they can reveal early defects in the development process, which are not easily detected with the signals in the steady state ...the fault ... See full document

... Motor Current Signature Analysis (MCSA) is a technique used to determine the operating condition of AC induction motors without interrupting ...thermal analysis to confirm key machinery ... See full document

... stator current spectrum of induction motors can reflect the ...of current flowing in the unbalanced rotor is sfs, where fs is the frequency of the supply phase current and s is the ...stator ... See full document

... stator current of the induction motor. Motor Current Signature Analysis technique is a popular method for monitoring the stator current to detect the ...stator current is ... See full document

... Wavelet analysis has the characteristics of multi- resolution analysis, with good localization properties in the time domain and frequency ...wavelet analysis is capable of using gradually ... See full document

... a fault detection model to identify broken rotor bar of ...proposed fault detection scheme, which consists of three sub-modules of feature extraction (FE), feature selection (FS), and fault ...the ... See full document

... Induction motor is a three phase AC motor and is the most widely used ...starting motor and need not be ...The fault detection and diagnosis methods for induction motors are wide such ... See full document

... field, current and other possible indicators. Diagnosis using current signal is flexible and less expensive ...Remote fault detection and diagnosis is also dealt ... See full document

... and diagnosis of faults is desirable for improving operation effectiveness and to avoid harmful and wrecking outcome preventing losses on financial side as ...and diagnosis can be done in various ways such ... See full document

... stator current signal is an easily measured signal, using the gearbox fault diagnosis system is not only low cost but also suit for remote monitoring, according to the ... See full document

... faults, motor current signature analysis (MCSA) is a widely and early used ...to fault diagnosis in three-phase induction motor ...techniques using steady state conditions ... See full document

... On the other hand, the peaks at f r are close to each other for different BRB cases. This shows that the tests have been carried out with good consistency between the four motors tested which need careful alignment ... See full document

... conventional bispectrum (CB) method and its new variant, the modulation signal bispectrum (MSB) method, in analysing the electrical current signals of induction machines for the condition ... See full document

... Abstract. Machine fault diagnosis is a very important topic in industrial systems and deserves further considera- tion in view of the growing complexity and performance requirements of modern ... See full document

... tween a healthy case and two faulty bearings under four different loads with the VFD controller. To highlight the small components, the Y-scale is fixed to 0.4A. It is dif- ficult to find the spectrum components at the ... See full document

... the fault in the stator or rotor generally show sideband frequencies around the mains frequency (50Hz) and it higher harmonics in the spectrum of the Motor Current Signature Analysis ...any ... See full document

... induction motor is the most common driver in industry and has been previously proposed as a means of inferring the condition of an entire equipment train, predominantly through the measurement and processing of ... See full document

... Electrical motor stator current signals have been widely used to monitor the condition of induction machines and their downstream mechanical ...for current signal analysis is based on ... See full document