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This paper presents Direct Power Control (DPC) based on instantaneous power theory is presented. The simulation of a grid connected five level inverter via an inductive filter with a new direct power strategy is used. However, this control method is similar to the classic DPC method, in which used triangles instead of the sectors. Furthermore, the regulation of DC link without interfering the hysteresis...
This paper presents a technique to detect and diagnose the broken rotor bars in an induction machine. The main signature used is the stator currents to envelope in the analysis of this kind of fault. Moreover, the envelope analysis of the stator currents is calculated based on the Hilbert Transform. Then, Fast Fourier Transform are introduced to extract the fault components. However, the technique...
In the paper electrical condition monitoring using air-gap magnetic flux density and magnetic vector potential is chosen due to its effectiveness, simplicity and low cost. AirGap magnetic flux density utilises spectral analysis results of induction machine to detect faults such as broken rotor bars. The magnetic field is efficient due to its ability to sample the harmonics component that consists...
This proposed paper is going to deal with the main new methods which are applied in both of the simultaneous dynamic eccentricity and broken rotor bars diagnosis inside the induction machines. The proposed method is based on the Fast Fourier transform, or spectral analysis of the measured magnetic flux density in the air-gap. More particularly, this paper deals with the use of a finite element method...
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