What Are the Technical Advantages and Prospects of Solar Water Pumps?
The solar water pump system is mainly composed of three parts: solar cell module, photovoltaic pumping inverter, and AC water pump. The solar cell array is composed of multiple solar cell modules in series and parallel, which absorbs solar radiation energy and converts it into electrical energy to provide power for the entire system.
The photovoltaic water pumping inverter controls and adjusts the operation of the system converts the direct current generated by the solar cell array into alternating current, drives the water pump, and adjusts the output frequency in real-time according to the change of the sunshine intensity, so as to realize the maximum power point tracking and maximize the utilization of solar. The water pump is driven by a motor and pumps water from a deep well, into a storage tank/pool or directly into an irrigation system.
According to the actual system requirements and installation conditions, different types of water pumps can be used to work, the system power can range from 0.37kW to 55kW, the water lift can be 10 meters to 300 meters, and the daily water volume can be between 3 tons and 1000 tons. The following summarizes the technical advantages and prospects of solar water pumps for everyone.
Technical feasibility and operating conditions
Solar water pump, also known as a solar photovoltaic water pumping system, is the most attractive means of water supply especially in remote areas where there is no electricity. It uses the available and inexhaustible solar energy to achieve a highly economical and highly reliable water supply.
The water pump works automatically at sunrise and rests at sunset, without human supervision, and the maintenance workload can be reduced to a minimum. It is an ideal green energy high-tech product integrating economy, reliability, and environmental protection benefits.
The solar water pump system is an option-mechatronics system that has developed rapidly in recent years. It uses the power generated by the solar cell to drive DC, permanent magnet, brushless, position sensorless, fixed double plastic-encapsulated rotor motors or high-efficiency asynchronous motors or high-speed switched reluctance motors drive high-efficiency water pumps to lift water from the depths of the surface to the ground for farmland irrigation or human and livestock drinking.
From the design of the solar water pump system to the manufacture of modern technologies involving electrical, mechanical, power electronics, computer, control, and other disciplines, it provides an extremely good means for the development of modern agriculture, energy conservation, and environmental protection.
The system has a good long-term economy, especially compared with the common diesel engine pumping, it has an overwhelming economic advantage. The development of this new type of environment-friendly and energy-saving product will undoubtedly bring great economic and social benefits to the development of industry and economy, especially the development of modern agriculture in arid areas.
Solar water pumps are divided into two series: DC water pumps and AC water pumps. Among them, the DC pump motor drive mode is divided into two categories: DC brushless motor and permanent magnet synchronous motor.
(1) The photovoltaic power supply rarely uses moving parts and works reliably.
(2) Safe, no noise, no other public hazards. The solar water pump does not produce any solid, liquid, or gas harmful substances, and is absolutely environmentally friendly.
(3) The solar water pump has the advantages of simple installation and maintenance, low operating cost, and is suitable for unattended operation. In particular, it has attracted attention for its high reliability.
(4) Good compatibility, photovoltaic power generation can be used in conjunction with other energy sources, and the photovoltaic system can be easily increased in capacity according to needs.
(5) The degree of standardization is high, and the components can be connected in series and parallel to meet the needs of different electricity consumption, and the versatility is strong.
(6) Solar energy is everywhere and has a wide range of applications.
Technology status and market prospects
In 1615, the world's first solar-powered machine was a water pump; in 1901, a solar water pump that pumped 5,300 liters per minute was built in California, USA. Since then, a number of solar water pumps have been built around the world, and these water pumps are all thermal power pumps. In 1975, the photovoltaic water pump was launched and put into production in batches.
The solar thermal power pump is divided into three categories according to the working temperature: low temperature, medium-temperature, and high temperature. By 1981, more than 100 solar thermal power pumps had been installed around the world, and these pumps were mainly distributed in third-world countries.
In the 1980s, Africa planned to build 5,000 solar thermal water pumps, and India planned to build 2,000 solar thermal water pumps by 1985. The United States also plans to build 1,000 solar thermal power irrigation systems. There are several companies in France that produce solar thermal power pumps, which can provide 6-83kW series of water pumps, but the solar thermal power pump system is complicated, the manufacturing cost is high, and its wide application is limited.
After the 1980s, international organizations such as the United Nations Development Program and the World Bank confirmed the advanced nature, rationality, and good development prospects of photovoltaic water pumps, which greatly promoted the application of photovoltaic water pumps. Some industrialized countries have launched a batch of photovoltaic water pump products, among which a Danish company has sold several photovoltaic water pumps all over the world.
At present, tens of thousands of photovoltaic water pumps are running around the world. India plans to provide subsidies from the government on the basis of the existing 4,000 photovoltaic water pumps and to promote the installation of 50,000 photovoltaic water pumps.
In the 1980s, China carried out research on solar thermal power pumps and trial-produced flat-plate collector-type low-temperature solar thermal power pumps. The diaphragm pump is used to pump water. In fine weather, it can pump 3-7 tons of water per day, with a lift of 18 meters. At the same time, the development of medium-temperature solar water pumps was also carried out.
In Beijing, a wind energy-solar thermal power hybrid water pump provided by Germany with a power of 3kW was also built. In the 1990s, China carried out research on photovoltaic water pumps, successively produced 100-watt and dry-watt-level photovoltaic water pumps, and established photovoltaic water pump production enterprises, which can produce 100-watt photovoltaic water pumps in batches. At present, the 2.5kW photovoltaic water pump developed by China is running in Xinjiang.
The potential market demand for photovoltaic water pumps is considerable, and the application prospects are broad. In addition to solving grassland irrigation, it also solves the problem of drinking water for people and animals in the region, ending the history of relying on manpower to carry water, and greatly liberating labor.
As a professional manufacturer of solar water pumps products, TPON provides high-quality products that are widely used to solve domestic water and agricultural irrigation problems in countries where electricity is scarce or expensive. We are equipped with a professional production team and strict quality inspection system, we can also provide users with thoughtful one-stop service. If you are interested in our solar water pump, please send us your needs, we will give you a satisfactory answer in time!