Stand-alone inverter includes power supply system of remote village,households use solar power system,communication signal power supply,cathode protection,solar street lamp etc,those independent power generation system with storage battery.
Photovoltaic(PV)grid-connected power system is connected and transmitting electric to the power network.The system receives solar radiation energy through photovoltaic component,after the high frequency DC conversion,solar radiation is changed into high voltage DC,then it goes through the inverter and becomes sine wave AC current which same frequency and phase to the power network.