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Aluminum electrolytic capacitors (AECs) are the most common capacitors used in power electronics. They are frequently used for filtering and storage functions because of their small size, large capacitance and low price. However, AECs also represent the major cause for power electronics equipment breakdown, mainly due to their wear out through the vaporization of the electrolyte, as a result of both...
Induction motors airgap-eccentricity fault detection has attracted the interest of many researchers in last decades. The Discrete Fourier Transform (DFT) has been widely used for that purpose. However, DFT can only give meaningful information for stationary signals. In this paper, an efficient time-domain technique based on a modified Prony's method for the airgap-eccentricity fault detection in induction...
This paper presents a new diagnostic method based on the induction motor three-phase power analysis that is able to detect gear broken teeth. A gearbox mathematical model was developed to simulate the healthy and the broken tooth conditions. The simulation and experimental tests proved that the wavelet and spectrum analysis of the induction motor (IM) three-phase power are valuable techniques to diagnose...
This paper presents a software tool that has been developed to model, investigate and simulate the behavior of a photovoltaic generator to be installed on a generic non-planar surface. The innovative aspect of the tool is the possibility to consider any kind of surfaces, also curved and moving ones. The tool has been developed in the Matlab environment and allows the user to analyze any kind of surface...
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