Analysis of solar irradiance intermittency mitigation using constant DC voltage PV and EV battery storage

The increasing presence of photovoltaic(PV) renewable power generation and plug-in hybrid electric vehicles (PHEV) in the national infrastructure leaves utilities, Solar PV owners, and both PV-inverter and Battery Charger manufacturers searching for means to mitigate the potentially destabilizing effects of intermittent renewables and battery charging loads on traditional utility grids, and particularly distribution feeders. Small amounts of battery storage can be interfaced to the PV-inverter system´s dc-link to effectively filter the fast transient changes in PV output power, thus enabling a greater presence of grid-interactive PV generation and providing a means of alleviating the grid from growing demands of battery charging loads and the challenges of intermittent distributed resources.