What is a solar PV inverter？

The process of converting DC energy into AC energy is called inverter, the circuit that performs the inverter function is called the inverter circuit, and the device that implements the inverter process is called the inverter or inverter device. The inverter used in the photovoltaic power generation system is a conversion device that converts the DC energy generated by the photovoltaic module into AC energy. It makes the voltage and frequency of the converted AC power consistent with the voltage and frequency of the AC power of the power system, so as to meet the needs of power supply and grid-connected power generation for a variety of AC power loads.

The basic requirements of photovoltaic power generation system on the inverter: ① reasonable circuit structure, strict screening of components, with a variety of protection functions; ② a wide range of DC input voltage; ③ less intermediate links in the conversion of electricity to save costs and improve efficiency; ④ high conversion efficiency; ⑤ high reliability, unmanned and maintenance; ⑥ the output voltage and current to meet the requirements of the power quality, harmonic content is small, high power factor; ⑦ with a certain degree of overload capability.