On the automatic interconnection between solar cells and inverter

A novel system including many solar cells and a secondary battery is presented. These energy sources are connected to each other with a bus bar through inverters and supply ac power to loads on the bus bar. The output voltage of the solar cell is always kept constant in order to derive the almost maximum output power from the solar cell when the light strength from the sun is varied. When multiple-loads in different places should be supplied, the solar cells can be distributed near by the respective load in order to remove transmission loss of the bus bar.