Brief introduction of photovoltaic inverter
Generally, the process of converting AC electric energy into DC electric energy is called rectification, the circuit that completes the rectification function is called rectification circuit, and the device that realizes the rectification process is called rectification equipment or rectifier. Correspondingly, the process of converting DC electric energy into AC electric energy is called inverter, the circuit that completes the inverter function is called inverter circuit, and the device that realizes the inverter process is called inverter equipment or inverter. Inverter, also known as power regulator, can be divided into independent power supply and grid connection according to the use of inverter in photovoltaic power generation system. According to the waveform modulation mode, it can be divided into square wave inverter, stepped wave inverter, sine wave inverter and combined three-phase inverter. Inverters used in grid connected system can be divided into transformer type inverter and transformer free inverter according to whether there is transformer or not. There are many types of inverters, so special attention should be paid to the selection of model and capacity. Especially in the solar power generation system, the efficiency of photovoltaic inverter is an important factor to determine the capacity of solar cells and batteries.
