Photovoltaic distributed power generation is a new type of power generation and comprehensive utilization of energy, which has broad development prospects. It advocates the principle of nearby power generation, nearby grid connection, nearby conversion and nearby use, which can not only effectively improve the power generation of photovoltaic power plants of the same scale, but also effectively solve the problem of power loss in boosting and long-distance transportation. However, distributed power generation also puts forward strict requirements on how to maximize solar power generation and how to ensure the safety of power grid, and the functionality and stability of photovoltaic inverter are also extremely critical in this process.