①逆变器包括3个部分:逆变部分的功能是采用大功率晶体管将直流高速切割,并转换为交流;控制部分由电子回路构成,其功能是控制逆变部分;保护部分也由电子回路构成,其功能是在逆变器内部发生故障时,起安全保护作用。②联网保护器是一种安全装置,主要用于频率上下波动、过欠电压和电网停电等的监测。通过监测如发现问题,应及时停止逆变器运转,把光伏系统与电网断 ① inverter consists of three parts: the inverter part of the function is the use of high-power transistors to DC high-speed cutting, and converted to AC; control part of the electronic circuit, its function is to control the inverter part of the protection part of the electronic circuit Constitute, its function is in the inverter internal failure, play a security role. ② network protection device is a safety device, mainly used for frequency fluctuations, over-voltage and power outages and other monitoring. By monitoring such as found problems, should stop inverter operation, the photovoltaic system and power off