Compensación de Potencia Reactiva en un Sistema Fotovoltaico Interconectado a la Red Eléctrica, Utilizando un Convertidor Bidireccional Monofásico con Enlace en Alta Frecuencia (Reactive Power Compensation in a Photovoltaic Grid Tie System, Using a Single-Phase Bidirectional High Frequency link Converter)

Obed Enrique Ochoa Robles (obedor@live.com)1, José Antonio Beristáin Jiménez (jose.beristain@itson.edu.mx)1, Javier Pérez Ramírez (javier.perezr@itson.edu.mx)1


1Instituto Tecnológico de Sonora

This paper appears in: Revista IEEE América Latina

Publication Date: April 2016
Volume: 14,   Issue: 4 
ISSN: 1548-0992


Abstract:
This paper introduces the study of a single phase bidirectional high frequency link converter for photovoltaics applications in grid tie systems, based in the Push-Pull topology. The main advantages of high frequency link converters are: the low cost and high power density of the transformers, and the capacity to provide galvanic isolation between the photovoltaic panels and the grid. Furthermore, the capability to manage bidirectional power flow from the electric grid to the dc source allows adding the capability to compensate reactive power in the system using the same circuit. On the other hand, the sizing of the passive elements is explained. Proper operation of the proposed system has been validated through simulation results, showing that the injection of photovoltaic power to the mains and reactive power compensation are being carried out at the same time.

Index Terms:
Bidirectional power flow, high frequency isolation, active power injection, reactive power compensation, power quality, push-pull topology.   


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