Photovoltaic water pump system achieves "dual-power" breakthrough; grid-connected technology solves the problem of pumping water on cloudy days.

The core breakthrough of this system lies in its globally leading MPPT (Maximum Power Point Tracking) algorithm, achieving a tracking efficiency of up to 99%, more than 40% higher than traditional photovoltaic water pumps. The system intelligently senses sunlight intensity, prioritizing photovoltaic power generation to drive the water pumps during periods of ample sunshine, achieving "zero electricity cost" pumping. When sunlight is insufficient, the system automatically switches to grid power mode to ensure uninterrupted water supply.

In a farmland irrigation demonstration project in Dali, Yunnan, the system demonstrated remarkable performance. On a sunny midday, the photovoltaic array's peak output power reached 15kW, driving the water pumps to pump over 80 cubic meters of water per hour, meeting the irrigation needs of 200 mu (approximately 33 acres) of farmland. During periods of continuous cloudy or rainy weather, the system automatically switches to grid power supplementary mode, maintaining a pumping capacity of over 60% of that on sunny days, completely solving the problem of traditional photovoltaic water pumps being dependent on weather conditions.

"This is not only a technological innovation, but also a revolution in agricultural irrigation methods," said Academician Wang of the Chinese Academy of Agricultural Mechanization after conducting an on-site inspection. "This system perfectly combines the intermittency of photovoltaic power generation with the stability of grid power, which not only reduces irrigation costs but also ensures the reliability of agricultural water use, and is of milestone significance for agricultural development in arid regions."