An improved capacity ratio design method based on complementary characteristics of wind and solar

Both the life cycle cost and the power supply reliability depend on a reasonable capacity of wind/solar/battery in hybrid power system. An improved capacity ratio design method for stand-alone wind-solar-battery hybrid power system (WSB/HPS) was proposed in this paper. This paper took full advantage of the complementary characteristics of wind and solar, which could improve power supply reliability highly while require less battery capacity. Moreover, the depth of discharge and charge/discharge cycles of the battery was reduced. The experimental result is presented to verify the advantages of the improved optimal design method.