The analysis of PV solar panels deterioration allows researchers to know the health status of a panel in order to determine the overall functioning of a PV solar farm. A part of this analysis is performed by thermography, generally using professional and expensive equipment. This article presents a validation for the use of low-cost thermal imaging cameras, reviewing the relative error that can be obtained through scattering, contour analysis and three-dimensional meshes. The procedure is validated by analysis of I-V/P-V curves and a temperature sensor matrix, reaching errors less than 10% with cameras with less than 500USD.

Este artículo presenta el diseño de un sistema de energía basado en supercondensadores para mitigar los huecos de tensión, con el sistema se mejora la calidad de energía en el punto de conexión común, el cual está expuesta a la conexión aleatoria de máquinas eléctricas, para ello se modela el sistema de distribución de energía del caso de estudio, el sistema de almacenamiento de energía, que está compuesto por supercondensadores, el sistema de conversión de energía bidireccional y el sistema de control de corriente y voltaje. El sistema diseñado permite inyectar una potencia de 22,8 kW y capacidad de 1,2 Wh, compensando los transitorios producidos por las cargas conectadas a la red.

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This paper presents the application of average current mode control to reduce the THD i and increase the PF in a Three-Phase Boost Rectifier driving a small wind turbine. It is used as the input stage of small wind turbines with permanent magnet synchronous generators operating at variable speed. The Boost Rectifier output is connected to an inverter which injects the energy to a distribution power grid. The operation in discontinuous conduction mode allows significantly reducing the Total Harmonic Distortion of the current in the small wind turbine. However, it is necessary to add an input filter so that the switching ripple doesn´t affect the small wind turbine. It is evaluated the convenience of the current sensors placement in the DC side of the rectifier or at the output of the generator. The results demonstrate that it is better to place the sensors at the output of the generator, because it is achieved a smaller THD i and a higher PF.