Work Principle Of Solar Pump Inverter

By Author: Allen V
Total Articles: 1
Comment this article

Solar pump (Solar Pumping System), is also known as photovoltaic pump, which works by using the power of the PV array to drive the pumping systems. The whole system mainly consists of PV array, solar pumping inverter and water pump. It is a integration system developed in recent years, and it is the most attractive water supply mode in world's sun-rich areas, especially in remote areas with electricity power shortage.

1. System Composition
a. PV array (Solar Array): Also known as a solar cell module, converts sunlight energy into electricity to provide power for load pump motor.
b. Solar pumping inverter or pump controller: it controls and regulates the running of solar water pumps, and the water pumps are driven by the power generated by the solar array, and according to changes in sunlight intensity, the output frequency would changes accordingly so that the output power could be close to the maximum power of the solar cell array.
c. Water pump: it converts the mechanical energy into fluid energy so as to achieve the purpose of pumping.

2.Running Process
By using the electricity generated ...
... by solar cell along with MPPT (maximum power point tracking) and conversion and drive control devices to drive DC, permanent magnet, and dual-rotor induction motors so that the pumps can realize the water pumping from underground to surface for irrigation or human and animal consumption.

3. Classification
a. DC Brushless Solar Water Pump (motor type):
motor type brushless DC pump consists of brushless DC motor plus impeller. The motor shaft and impeller are linked together, and there is space between the stator and rotor, and the motor might burn out if water penetrates into the motor.
Advantages: brushless DC motor has been standardized, and there are specialized manufacturers for mass production with low cost and high efficiency.
b. Brushless DC Magnetic Isolated Solar Pumps:
Brushless DC Pump uses a commutation electronic component without carbon brush commutation，and it adopts high-performance wear-resistant ceramic shaft and ceramic sleeve, which can avoid wear and tear, so the service life of the magnetic brushless DC type pump is greatly prolonged. And the running noise can be lower than 35dB or less, and it can be used for hot water circulation. Part of the motor stator and the circuit board are completely isolated with the rotor by epoxy potting. This kind of inverter water pump can be installed under water and completely waterproof since the water pump axis is high-performance ceramic shaft with high precision and good shock resistance.

4. Advantages of Solar Pump Inverter
1, reliable, long service life and reliable;
2, safe, no noise, low power consumption, no other public hazards. It does not produce any harmful substances, absolute environmental;
3, simple installation and maintenance;
4, good compatibility, photovoltaic power generation can be used in conjunction with other sources of energy, photovoltaic systems can also adjust convenient capacity according to need;
5, High degree of standardization, may meet the needs of different conditions;
6, solar energy are everywhere and the application range is wide;
7, Economic when compared with the common diesel pumping.