Working Principle and Advantages of Solar Water Pump

2022-11-15

Working principle of the solar water pump

Solar water pump is used for residential and commercial applications. It is clean alternative to fossil fuel-driven windmills and generators. There are two main types of solar water pumps. Surface pumps are located above ground and move water through pipelines, which can slowly move large amounts of water. Ground pumps are typically found on farms or large irrigation systems where water needs to be moved from lakes to fields. Submersible solar water pumps are located underground, but the solar panels are connected above ground. Submersible pumps are used to move water from the well to the surface.

The main difference between solar pumps and conventional pumps is the power source. Solar water pumps rely on solar panels to operate the equipment. The solar panels can be built into the device or connected through wires to an independent structure of the pump. Then, the solar panels power the equipment, allowing it to operate independently of any existing electrical system.

The Large solar water pump ranges in size from small pumps to power fountains, and large pump used to pump water from underground aquifers. Built-in panels are typically used for smaller pumps, while larger pumps require independent installation.

Characteristics of various types of the solar water pump

Brushed DC solar water pump

When the water pump is running, the coil and commutator rotate, while the magnet and carbon brush do not rotate. The alternating change of the direction of the coil current is completed by the commutator and carbon brush as the motor rotates. As long as the motor rotates, the carbon brush will wear out. When the solar water pump operates for a certain time, the wear gap of the carbon brush will increase, and the sound will also increase accordingly. After running continuously for several hundred hours, the carbon brush can no longer perform the reversing function. Advantages: Low price.

Brushless DC solar water pump

The motor-type brushless DC large solar water pump is composed of a brushless DC motor and an impeller. The shaft of the motor is connected to the impeller. There is a gap between the stator and the rotor of the water pump. After using it for a long time, water will penetrate into the motor, which increases the possibility of the motor being burned out. Advantages: The brushless DC motor has been standardized, and there are specialized manufacturers producing it in large quantities, so the cost is relatively low, and the efficiency is high.

Brushless DC magnetic isolation-type solar water pump

The brushless DC solar water pump adopts electronic component reversing, eliminating the need for carbon brush reversing, and uses high-performance wear-resistant ceramic shaft and ceramic shaft sleeve. The shaft sleeve is integrated with the magnet through injection molding, which avoids wear and tear. Therefore, the lifespan of the brushless DC magnetic pump is greatly enhanced. The stator and rotor of the magnetic isolation pump are completely isolated. The stator and circuit board are sealed with epoxy resin, 100% waterproof, and the rotor uses permanent magnets. The pump body is made of environmentally friendly materials, has low noise, small size, and stable performance. The various required parameters can be adjusted through the winding of the stator, and it can operate widely under voltage.

Advantages: Long lifespan, low noise, can reach below 35dB, and can be used for hot water circulation. The stator and circuit board of the motor are sealed with epoxy resin and completely isolated from the rotor. The pump can be installed underwater and is completely waterproof. The pump's shaft is made of high-performance ceramic, with high precision and good earthquake resistance.