It monitors the voltage, frequency, phase and other parameters of the power grid in real time through grid connected control circuits. Based on these monitoring data, the inverter automatically adjusts the frequency, phase, and voltage amplitude of the output AC power to accurately match the corresponding parameters of the grid, ensuring that high-quality AC power is safely and stably integrated into the grid after meeting the grid connection conditions, achieving effective connection between solar power generation and the grid, and transmitting the converted solar energy to the grid for user use.