This report first studies the structure of photovoltaic inverter, establishes the photovoltaic inverter model, including the mathematical model of photovoltaic array, filter and photovoltaic inverter system in different coordinates; builds a single-stage grid connected photovoltaic power generation system model based on MATLAB / Simulink simulation platform, studies the fast reactive power control principle of photovoltaic inverter, and simulates and analyzes the photovoltaic power generation system Reactive power control strategy of unified quota.

photovoltaic inverter; mathematical model; reactive power fast control; rated reactive power control strategy