This paper presents a feasible implementation of a single phase inverter prototype via a Highly Efficient and Reliable Inverter Concept (HERIC) topology, which is connected to the grid through a phase and frequency synchronization system by means of a Second Order Generalized Integrator -Frequency Locked Loop (SOGI-FLL). The chosen topology for the inverter design -unlike a full H-bridge (FB) inverterincorporates two transistors in the output aimed at preventing reactive power transfer between the output filter and input capacitor when zero-crossing. Furthermore, proposed inverter implementation presents low leakage currents, and increases HERIC system efficiency. Moreover, the SOGI-FLL chosen for connecting the HERIC inverter to the grid provides -even under harmonic distortion-a fast and accurate frequency tracking. The prototype implementation can be divided into two parts: First, the power inverter HERIC is implemented, which holds four transistors MOSFET IRF730 (400V-10A) in a FB topology, as well as two IGBT transistors GP10NC60KD (600V-10A). In addition, in order to protect all the devices and ensure a well transistor conmmuation, four diodes type SF54 (200V-5A) are located between emisor and collector from all transistors. Second, the synchronization system is implemented on an Arduino Due digital platform.Index Terms-Power system interconnection, HERIC inverter, Frequency locked loop , Second order generalized integrator.
El mundo experimenta un aumento constante en la demanda de energía eléctrica. Una alternativa para suplir dicha demanda consiste en la implementación de energías renovables. En Colombia, desde la aparición de la Ley 1715 se ha desarrollado una política de incentivos para la integración de nuevos proyectos en este tipo de energías. Por ello, es importante adelantar estudios con datos reales para que eventualmente puedan ser implementados. En este artículo se presenta el análisis del potencial de generación eólica de la sabana de Túquerres, ubicada en el departamento de Nariño, Colombia. El potencial se obtuvo a partir de la medición de la velocidad del viento entre los meses de junio y diciembre del año 2015. Los datos se analizaron estadísticamente según una medida de tendencia central, distribución de frecuencias y distribución de Weibull para la normalización de datos dispersos. Finalmente, se calculó la densidad de potencia a partir del modelo de una turbina eólica de eje horizontal y se simuló la curva de generación eléctrica de la zona. La velocidad de viento promedio de la zona es de 4,4 m/s y la densidad de potencia encontrada es igual a 3,47 W/m2.
This work presents the relationship between the irradiance, in the city of Pasto, and the power generated by three types of PV panels: monocrystalline, polycrystalline and amorphous silicon thin film. The irradiance data was collected in the year 2014, using the weather station DAVIS Advantage PRO 2.0. The power generated by the PV panels was monitored and recorded using an acquisition system, in real time, developed by the authors. This information was stored into a MySQL database (manager free database), the information decoding process and graphical representation was automatic and daily registered with analysis software variables, developed by the authors with Visual Studio 2010. As a result of this work, a model that predicts the possible behaviour of the power generated by each one of the technologies concerning the irradiance was obtained; this methodology can be replicated and adjusted to the conditions of a place where a PV system based on one of three technologies could be placed, evaluating which one has a better efficiency. Specifically for the city of Pasto, the best result was got by monocrystalline silicon panels.
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