Industrial MPPT Solar VFD for Reliable Remote Water Pumping Systems
The Off-Grid Solar Pump Inverter is an industrial variable frequency drive designed to operate AC water pumps directly from photovoltaic (PV) power sources.
By converting solar DC power into adjustable-frequency AC output, the inverter automatically regulates motor speed according to available solar energy. The integrated MPPT algorithm continuously tracks PV power changes, helping improve solar utilization and maintain stable pumping performance throughout different weather conditions.
Designed for agricultural irrigation, livestock watering, remote water supply, and commercial solar pumping projects, this inverter provides a practical solution for locations where grid power is unavailable, unreliable, or expensive.
Key Features & Engineering Advantages
Efficient MPPT Solar Control
The built-in MPPT control algorithm adjusts the PV operating point in real time to capture available solar energy more effectively.
Benefits:
Improved PV energy utilization
Extended daily pumping operation period
More stable pump performance under changing sunlight conditions
MPPT tracking efficiency can reach up to 99% under standard operating conditions.
Battery-Free Off-Grid Operation
The inverter is designed to operate directly from solar panels without battery storage.
Compared with battery-based solar pumping systems, this configuration offers:
Lower initial system cost
Reduced maintenance requirements
Simplified system design
It is especially suitable for remote agricultural and infrastructure applications.
Flexible Compatibility with Pump Systems
The inverter supports various AC pump applications, including:
Submersible pumps
Centrifugal pumps
Surface pumps
Deep well pumps
Compatible motor types include:
AC induction motors
Permanent magnet synchronous motors (depending on model configuration)
Adjustable frequency control allows system integrators to optimize pump operation according to different flow and head requirements.
Reliable Protection for Unattended Operation
Many solar pumping systems are installed in remote areas where maintenance access is limited.
The inverter integrates multiple protection functions:
Sensorless Dry-Run Protection: By monitoring motor operating characteristics, the inverter can detect abnormal conditions caused by insufficient water supply and stop the pump to reduce the risk of damage.
Electrical Protection
Includes:
Over-voltage protection
Over-current protection
Short-circuit protection
Over-temperature protection
Phase-loss protection (three-phase models)
Water Level Control: Digital inputs support external float switches or water level sensors for automatic tank filling control.
Smart Monitoring & System Integration
For EPC contractors and system integrators, easy communication and remote maintenance are important for large-scale projects.
Standard features include:
RS485 Modbus RTU communication
PLC and SCADA integration capability
Optional 4G/GPRS remote monitoring modules
Available monitoring information:
PV voltage
Operating frequency
Fault records
Running status
Technical Specifications
|
Parameter |
Specification |
|
Power Range |
0.75kW–160kW |
|
Input Source |
Solar PV DC |
|
Control Method |
MPPT + V/F Control / Sensorless Vector Control (Optional) |
|
Motor Compatibility |
AC Induction Motor / PMSM |
|
Output Frequency |
0–600Hz Adjustable |
|
DC Voltage Range |
According to model configuration |
|
Communication |
RS485 Modbus RTU |
|
Protection |
Over Voltage, Over Current, Over Temperature, Short Circuit |
|
Protection Rating |
IP20 Standard / IP65 Optional |
Typical Applications
Agricultural Irrigation: Used for drip irrigation, sprinkler systems, and deep-well pumping where stable water supply is required.
Livestock Water Supply: Provides autonomous pumping solutions for farms located in areas without reliable grid power.
Remote Water Infrastructure: Suitable for villages, islands, and remote projects requiring independent water management.
OEM Solar Pump Systems: A flexible drive platform for pump manufacturers, EPC contractors, and solar solution providers developing customized pumping systems.
Manufacturing Capability & Quality Control
For bulk buyers and distribution partners, consistent production quality is essential. Our manufacturing process includes:
Incoming Material Inspection: Critical components such as power modules, capacitors, and control components are inspected before production.
Automated PCB Assembly: SMT production and inspection processes help maintain consistent electronic assembly quality.
Functional & Aging Testing: Completed inverters undergo electrical testing and operating tests before shipment to verify product performance and stability.
OEM & Distributor Support
We support global partners with:
OEM branding
Customized labels and packaging
Parameter configuration
Technical documentation
Application support
Our engineering team assists distributors and EPC partners with product selection and system integration requirements.
Certificate
FAQ
Q: Can this solar pump inverter work without batteries?
A: Yes. The inverter is designed for direct PV operation, allowing solar energy to power the pump without battery storage.
Q: What pump types are compatible?
A: It supports common AC pumps including submersible pumps, centrifugal pumps, and surface pumps.
Q: How should the inverter be selected?
A: Selection should consider pump power, motor voltage, required water flow, head pressure, and solar PV configuration.
Q: Can it work with 50Hz and 60Hz pumps?
A: Yes. Output frequency can be adjusted according to different regional motor standards and application requirements.
Q: Do you provide OEM services?
A: Yes. OEM branding, customized parameters, and technical documents are available for qualified distributors and project partners.
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