【摘 要】
：
Induction motor faults including mechanical and electrical faults are reviewed. The fault diagnosis methods are summarized. To analyze the influence of stator c
【机 构】
：
School of Electrical Engineering
论文部分内容阅读
Induction motor faults including mechanical and electrical faults are reviewed. The fault diagnosis methods are summarized. To analyze the influence of stator current, torque, speed and rotor current on faulted bars, a time-stepping transient finite element (FE) model of induction motor with bars faulted is created in this paper. With wavelet package analysis method and FFT method, the simulation result of finite element is analyzed. Based on the simulation analysis, the on-line fault diagnosis system of induction motor with bars faulted is developed. With the speed of broken bars motor changed from 1 478 r/min to 1 445 r/min, the FFT power spectra and the wavelet package decoupling factors are given. The comparison result shows that the on-line diagnosis system can detect broken-bar fault efficiently.
其他文献
The microstructure of palygorskite from Longwang Mountain of Xuyu County, Jiangsu Province, was studied by energy dispersive X-ray analysis (EDX), selected-area
The normalized iris image was divided into eight sub-bands, and every column of each sub-band was averaged by rows to generate eight 1D iris signals. Then the e
In order to extract deterministic component from trend nonstationary time series,regression analysis by Akaike Information Criterion (AIC) for segment size and
Previous studies concerning the interaction of dual vortices have been made generally in the determin-istic framework. In this paper, by using an advection equa
Process integration is the important aspect of product development process. The recent researches focus on project management, workflow management and process m
To investigate the preventive effect of epimedium-defivod phytoestrogen (PE) on osteoporosis induced by ovariectomy (OVX) in rats, 11-month-old female Wistar ra
Objective To investigate the biodegradation of tetrachloroethylene(PCE using methanol as electron donor by acclimated anaerobic sludge.Methods HP-6890 gas chrom
Automatic gauge control is an essentially nonlinear process varying with time delay, and stochastically varying input and process noise always influence the tar
A novel Eucommia antifungal peptide, named EAFP3, was isolated from the bark of Eucommia ulmoides by NaCl extract, gel filtration and reverse phase high perform
The obstacle for idea generation in fuzzy front end (FFE) is difficult to apply knowledge in different fields for designers. Theory of inventive problem solving