Abstract
Photovoltaic (PV) generation has attracted much attention as a new electric-power generation system. However, the output power of PV generation systems experiences significant fluctuations, which negatively affect the electric-power reliability of the grid. It is therefore necessary to smoothen it using power-smoothing control methods. This paper evaluates different power-smoothing control methods using a moving average filter and finite impulse response filters for distributed generation systems with energy storage devices. We analyze the gain and phase characteristics of these filters, and we perform computer simulations to evaluate the effectiveness of the smoothed electric power generated by PV generation systems.
