After sunrise, the intensity of solar radiation gradually increases, and the output power of the photovoltaic array also increases accordingly. When the output power of the photovoltaic array reaches the required power for the inverter to operate, the inverter automatically starts running.

Afterwards, the inverter constantly detects the output power of the photovoltaic array, and as long as the output power of the photovoltaic array exceeds the power required for the inverter to operate, the inverter continues to operate. When the output power of the photovoltaic array decreases and the output power value of the inverter approaches zero, the inverter switches to standby mode.