PC based controller for utility interconnected photovoltaic power conversion systems

Electric utility interfaced photovoltaic power conditioning systems have come into vogue recently. In the majority of reported works, grid connections have been achieved through line commutated inverters with analog control. The poor performance of these schemes points to the need for developing a more efficient and reliable grid interface for generating utility grade AC, with fairly low levels of harmonics generated, In this paper, a DC to AC static power converter with a PC-based controller employing the pulse width modulation technique have been developed and tested, and the results of experimental investigations are also reported