AC Solar Pump Controller

The AC Solar Pump Inverter is a dedicated variable frequency drive designed to operate three-phase AC water pumps using solar energy. It converts DC power generated by photovoltaic (PV) panels into controlled AC output, allowing standard AC induction motors and permanent magnet motors to operate efficiently in off-grid and hybrid solar pumping systems.

Compared with traditional fixed-speed pumping systems, the inverter adjusts motor frequency according to available solar power, helping maintain stable water output under changing sunlight conditions.

Designed for agricultural irrigation, deep-well pumping, livestock watering, and large-scale water management projects, this solar pump inverter provides a practical solution for customers looking to reduce dependence on diesel generators and unstable grid power.

Variable Frequency Control for Efficient Pump Operation
Traditional direct-start AC pumps operate at fixed speed, which can cause high starting current and unnecessary energy consumption.
The integrated VFD technology provides:
Soft motor starting
Adjustable pump speed
Reduced mechanical stress
Improved operating flexibility
By controlling output frequency according to solar availability, the system helps match pump performance with real-time power conditions.

Intelligent MPPT Solar Energy Optimization
Solar output changes throughout the day due to weather and irradiation conditions.
The built-in MPPT algorithm continuously tracks PV operating conditions and adjusts inverter output to improve solar energy utilization.
Benefits include:
Longer daily pumping operation time
Better performance during low irradiation periods
Improved matching between solar array and pump load
MPPT tracking efficiency: Up to 98.5% (model dependent).

Wide Compatibility with AC Pump Motors
The inverter is designed for commonly used three-phase AC pumping systems.
Compatible motor types:
Three-phase induction motors (IM)
Permanent magnet synchronous motors (PMSM, model dependent)
Suitable applications:
Deep well submersible pumps
Surface centrifugal pumps
Agricultural irrigation systems
Industrial water transfer systems

Reliable Protection for Remote Pumping Applications
Solar pumping systems are often installed in locations where maintenance access is limited.
Integrated protection functions include:
Motor Protection
Overload protection
Locked rotor protection
Dry-run detection
Automatic restart function
Electrical Protection
Over-voltage protection
Under-voltage protection
Over-current protection
Short-circuit protection
Phase loss protection
These functions help reduce equipment damage and improve long-term system reliability.

Hybrid Power Compatibility for Continuous Water Supply
For projects requiring higher availability, selected models can integrate backup power sources.
Supported configurations may include:
Solar priority operation
Grid backup
Diesel generator backup
When solar power is insufficient, the system can switch to alternative power sources through appropriate external switching solutions.

For distributors, EPC contractors, and solar pumping brands, we provide customized manufacturing support.

Before shipment, each production batch can undergo:

These procedures help ensure consistent performance for different solar pumping applications.

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