PV system output, reflecting irradiation conditions, changes every second. A large number of grid connected PV systems are understood to generate output fluctuations substantial enough to adversely affect utility power quality. Thus the PV system need to have the output fluctuation smoothing system with charge/discharge equipment.
This paper introduces the structure of charge/discharge apparatus equipped PV systems, and describes test results on PV module-scale systems. Effectiveness of the system will be proved.
