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The stator or rotor faults don't have important percentage compared to bearings faults. For this reason, it's necessary for us to worry about this kind of faults. The detection of this failure has been given by several methods. To progress this approach, we propose an analytical model for the diagnosis of induction motor. This paper presents a new precise model for the calculation of inductances in...
This paper discusses the analysis of the effect of the permeance function harmonics induced by dynamic air-gap eccentricity in squirrel cage induction machines and explains the mechanism of generation of the harmonic components in the stator current spectrum. An analytical expressions of the motor inductance have been derived using the decomposition into Fourier series of both winding function approach...
There are many limitations to applying online spectrum analysis techniques for diagnosis of closed-loop inverter-fed induction motors due to variable load or frequency operation, and the masking effect of the current regulator. In this paper, a new automated approach for testing inverter-fed induction machines for airgap eccentricity is proposed. The main concept is to use the inverter to excite the...
This paper proposes a new method for inductance calculation of induction motors (IM) based on the convolution theorem. The integral form leading to the inductance expressions is derived from the 2D modified winding function approach (2D-MWFA). As first application, a model allowing teeth saturation to be taken into account by the corresponding air-gap permeance variation is proposed. The work points...
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