What are the types and characteristics of solar water pumps?

1. Brushed DC photovoltaic water pump 2. Brushless DC photovoltaic water pump (motor type) 3. Brushless DC photovoltaic water pump (magnetic drive isolation type) 4. Solar photovoltaic water pump (photovoltaic pumping system, AC water pump)

Features

1. Brushed DC photovoltaic water pump: when the pump is working, the coil and the commutator rotate, and the magnetic steel and carbon brush do not rotate. The alternating change of the coil current direction is completed with the commutator and brush rotating the motor, as long as the motor Rotating the carbon brush will cause wear. When the computer water pump runs to a certain point, the carbon brush wear gap becomes larger, and the sound will increase. After continuous operation for hundreds of hours, the carbon brush will not be able to play a role in commutation. Advantages: low price.

2. Brushless motor type photovoltaic water pump: The motor type brushless DC water pump is composed of a brushless DC motor and an impeller. The shaft of the motor is connected to the impeller, and there is a gap between the stator and rotor of the pump. After a long time of use, water will penetrate into the motor and the motor is easily burned out. Advantages: Brushless DC motors have been standardized and mass produced by specialized manufacturers, with low cost and high efficiency.

3. Brushless DC magnetic drive photovoltaic water pump: Brushless DC water pump adopts electronic component commutation, no need to use carbon brush commutation, high-performance wear-resistant ceramic shaft and ceramic bushing, the bushing is integrated with magnet by injection molding Wear is avoided, so the life of the brushless DC magnetic pump is greatly enhanced. The stator part and rotor part of the magnetically isolated water pump are completely isolated. The stator and circuit board parts are encapsulated with epoxy resin, 100% waterproof. The rotor part uses permanent magnets. The pump body uses environmentally friendly materials. The noise is low, the volume is small, and the performance stable. Various required parameters can be adjusted through the winding of the stator, and wide voltage operation is possible.