Photovoltaic reactive power limits

Today, Photovoltaic (PV) inverters are working with very small values of reactive power. Then, the Power Factor (PF) is very close to the unit. So, the PV installations only inject active power into the grid. This paper aims to investigate the limits of reactive power capacity in PV generators. In this way, PV generators could be used as a controlled reactive power sources. In this paper, an introduction to the voltage control in photovoltaic generators is described and implemented in Simulink/Matlab and PSS/E.The Spanish Ministry of Education and Science has supported this research under contract ENE2009-13883-C02-C1.Publicad