Solar water pump (Solar Pumping System) is also called photovoltaic water pump. That is, the photovoltaic pumping system that uses the power generated by the photovoltaic array to drive the pump to work. The whole system is mainly composed of photovoltaic array, solar pumping inverter and water pump. It is a photoelectromechanical integration system that has developed rapidly in recent years. It is an excellent and attractive water supply method in today's sunny regions of the world, especially in remote areas that lack electricity and no electricity.
(1) System composition:
1. Photovoltaic Array (SolarArray): It is also called solar cell module. It mainly converts the sun's light energy into electrical energy and provides working power to the load pump motor.
2. SolarPumpingInverter or controller: implements control and adjustment of the operation of solar water pump, drives the water pump with electric energy from the solar array, and adjusts the output frequency in real time according to the change in sunlight intensity, so that the output power is close to Superior high power of solar cell array.
3. Water pump (pump): Generally, the machine that lifts liquid, conveys liquid, or increases the pressure of the liquid, that is, changes the mechanical energy of the prime mover into liquid energy, so as to achieve the purpose of pumping liquid.
Operation process:
Utilize the power from solar battery to drive DC, permanent magnet, brushless, positionless sensor, fixed-rotor double plastic encapsulated motor or high-efficiency asynchronous motor or high-speed switched reluctance motor to drive high-efficiency water pump through superior high-power point tracking, transformation, and control devices , From the deep surface to the ground for farmland irrigation or human and livestock drinking.
Classification:
1. DC brushless solar water pump (motor type):
The motor-type brushless DC water pump is composed of a brushless DC motor and an impeller. The shaft of the motor and the impeller are connected together, and there is a gap between the stator and the rotor of the water pump. When the water is used for a long time, water will penetrate into the motor and increase the possibility of the motor burning out.
Advantages: Brushless DC motors have been standardized and mass-produced by specialized manufacturers, with relatively low cost and high efficiency.
2. Brushless DC magnetic isolated solar water pump:
Brushless DC water pump uses electronic component commutation, no carbon brush commutation is required, high-performance wear-resistant ceramic shaft and ceramic shaft sleeve are used, and the shaft sleeve is integrated with the magnet through injection to avoid wear, so brushless DC magnetic force The life of the water pump has been greatly enhanced.
The stator and rotor parts of the magnetically isolated water pump are completely isolated. The stator and circuit board parts are encapsulated with epoxy resin and 100% waterproof. The rotor part is made of permanent magnets. The pump body is made of environmentally friendly materials, with low noise, small size and performance stable. Various required parameters can be adjusted through the windings of the stator, allowing wide voltage operation.
Advantages: long life, low noise up to 35dB, can be used for hot water circulation. The stator and circuit board of the motor are potted with epoxy resin and completely isolated from the rotor. It can be installed underwater and completely waterproof. The shaft of the water pump uses a high-performance ceramic shaft with high accuracy and good shock resistance.
3. Three-phase AC water pump:
Three-phase AC pump is driven by a three-phase AC motor. Unlike a DC system, a solar AC pump consists of a solar array (providing power), a solar pumping inverter (converts DC to AC, and controls the motor frequency) and a three-phase AC motor pump.
Advantages: The three-phase AC motor water pump in the system can be replaced with a commercially available electric or diesel engine-driven AC water pump, and the compatibility is very good. At the same time, the AC water pump breaks through the power limitation of the DC water pump. The power can be applied from 150 watts to 105 kW, which is suitable for the needs of large-scale farmland, desert management and irrigation.
Fourth, advantages:
1. Reliable: Long life, photovoltaic power supply rarely uses moving parts, reliable work;
2. Safe, no noise, low power consumption, no other pollution. Does not produce any solid, liquid and gas harmful substances, absolutely environmentally friendly;
3.Simple installation and maintenance, suitable for unattended, especially for its high reliability and attention;
4. Good compatibility, photovoltaic power generation can be used in conjunction with other energy sources, and the photovoltaic system can be easily added to capacity according to needs;
5, high degree of standardization, can be used in series and parallel components to meet the needs of different power consumption, strong versatility;
6. Solar energy is available everywhere and has a wide range of applications.
7, has a good long-term economics, especially compared with common diesel engine pumping, has overwhelming economic advantages.
V. Disadvantages:
Energy is scattered, intermittent, and regional. Higher upfront costs.
Product of solar water pump:
These innovative water pumps are designed for use in rural environments and feature a sturdy structure. The power is divided into 3 horsepower, 5 horsepower, 7.5 horsepower and 10 horsepower.
