The inverter also protects the pump from overvoltage, undervoltage, and dry-running conditions. Many modern solar inverters include built-in sensors for water level, pressure, and flow, enabling automatic start/stop operations. For example, when the water storage tank is full, the inverter shuts down the pump to prevent overflow. Conversely, when the water level in a well drops below the pump intake, the controller stops the motor to prevent damage. These intelligent control features make the system autonomous and reliable without continuous human intervention.
The environmental impact of adopting the A-Serie solar pump inverter is largely positive. Each kilowatt-hour of solar pumping displaces roughly 0.7 kilograms of carbon dioxide when compared to diesel generators, and even more when compared to grid electricity generated from fossil fuels. For a 10 kW system operating 2,000 hours per year, the annual CO2 savings amount to approximately 14 metric tons. Furthermore, the reduction in diesel fuel consumption also eliminates local air pollutants such as particulate matter and nitrogen oxides, which are harmful to farm workers and nearby communities. The A-Serie thus contributes to several Sustainable Development Goals, including affordable clean energy, zero hunger, and climate action.
Applications
Solar pump inverters with DPROMP technology are used across a broad spectrum of applications. In agriculture, they power submersible pumps for drip and sprinkler irrigation, helping farmers reduce dependence on diesel-powered generators or unreliable grid electricity. In rural and remote communities, they provide clean drinking water from boreholes and wells. In arid or semi-arid regions, solar water pumps are crucial for watering livestock and supporting smallholder farming. Additionally, DPROMP inverters are used in fountain pumps, swimming pool circulation, and industrial water supply system
The adoption of Lowara solar pump inverters delivers several significant benefits. First, it reduces or eliminates dependence on fossil fuels and grid electricity, lowering operational costs and carbon emissions. Once installed, a solar pumping system has minimal energy expenses, as sunlight is free. Second, because no batteries are required in most configurations, the system is simpler, cheaper to install, and easier to maintain. The inverter’s MPPT function maximizes water output per installed watt of solar capacity, improving system efficiency by up to 30% compared to non-MPPT controllers. Third, the soft-start feature prevents water hammer and mechanical stress on the pump, prolonging pump life. Additionally, the system is virtually silent and produces no exhaust gases, making it environmentally friendly and suitable for sensitive location
The pump’s total dynamic head (TDH) and required flow rate dictate the power demand. The DPROMP inverter can be programmed with these parameters, allowing it to limit the pump speed to avoid excessive pressure or flow. Additionally, the use of a dry-run sensor can be integrated directly with the inverter’s control inputs, providing a second layer of protectio
Another notable feature is the adjustable MPPT control, which allows fine-tuning of the solar array configuration to maximize energy harvest. The inverter also supports both single-phase and three-phase pump motors, making it compatible with a wide range of Lowara pumps. In addition, the unit is designed with a robust IP-rated enclosure, protecting against dust and water ingress for outdoor installation. Its fanless cooling design in certain models reduces maintenance requirements and extends the inverter’s service lif
Solar pump inverters serve as the intelligent interface between solar panels and pump motors. Traditional pumping systems require either grid electricity or diesel fuel, both of which entail ongoing operational costs and logistical challenges. The A-Serie inverter addresses these issues by using Maximum Power Point Tracking (MPPT) to continuously extract the maximum available power from the solar array, even under fluctuating irradiance and temperature conditions. This ensures that the pump operates at optimal speed throughout the day, producing water output that follows solar availability. The A-Serie typically supports a wide input DC voltage range, for instance from 200 V to 850 V, making it compatible with various PV array configurations. Through its sophisticated MPPT algorithm, the inverter can track the maximum power point with high accuracy, often achieving tracking efficiency above 99%. This directly translates into higher water yields for a given PV array size.
The operational flexibility of the SunFlow inverter extends to its multiple power supply modes. While primarily designed to operate from PV arrays, several SunFlow models can also accept DC input from hybrid sources or integrate with AC backup via an optional grid-tie or diesel-generator input. This feature provides a hybrid operation mode, where the inverter automatically switches to the AC backup source during prolonged cloudy periods or at night if water demand is critical. Moreover, the inverter allows for water level detection using float switches, preventing dry running of the pump and protecting the water source. The inclusion of both analog and digital inputs for pressure transducers enables the system to regulate flow for applications such as drip irrigation or pressurized piping, making the SunFlow inverter adaptable beyond simple borehole pumping.
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