Many developing countries around the world have problems such as backward power infrastructure, low grid coverage in remote areas, power shortages, and the impact of international policies, which have led to an increase in demand for solar power. Especially in Africa, South America, Southeast Asia and other regions, many families, enterprises, and industries have chosen large off grid solar power systems for power generation. Off grid solar power systems can not only provide stable power support, but also affect the economic benefits of the entire country. In this article, Xindun will deeply analyze and understand large off grid solar power systems.
A large off grid solar power system is an independent power supply system that does not rely on the public power grid. It mainly serves areas where the power grid cannot be accessed or the power supply is extremely unstable. Unlike small off grid systems, Large Off Grid Solar System usually has a power of more than 10KW and is suitable for places with large power loads such as commercial, industrial, agricultural, and community. The inverter system is the "heart" of power conversion and plays a vital role in the stable operation and power supply of the entire system. The system collects sunlight energy through solar panels, stores it in batteries through controllers, and then converts the electricity into alternating current(AC) through inverters for daily lighting, air conditioning, water pumps, machinery and equipment, etc., to meet high power electricity needs.
In areas with power shortages, frequent power outages or high diesel power generation costs, large off grid solar systems bring users true "energy independence".
A complete solar power system is not just a simple combination of "solar panels + inverters". Large off grid solar power systems are mainly composed of core components such as solar panels, inverters, energy storage batteries and controllers. Each part plays an important role:
1. Solar panels
This is the core power generation component of the system. Solar panels are responsible for converting solar light absorption into direct current (DC) and are usually installed in places with sufficient light, such as the ground or roof. Its efficiency, arrangement angle and installation location will directly affect the energy output of the entire system. For large off grid systems, high power, high conversion efficiency monocrystalline silicon or polycrystalline silicon modules are usually selected to optimize unit area output.
2. Solar controller
The DC power output by solar panels is not stable. If it is charged directly, it will damage the battery life. The solar controller is used to adjust the output current and voltage of the solar panel to ensure that the panel always works in the best state, prevent the battery from being overcharged or over discharged, and extend the battery life. The function of the MPPT controller is to track the maximum power point of the solar panel in real time to maximize the utilization efficiency of solar energy. Compared with the PWM controller, the MPPT has stronger conversion efficiency and system compatibility, and is suitable for large load scenarios.
3. Battery
As a solar energy storage system, the battery stores excess power during the day for use at night or on rainy days. Large systems generally use lithium batteries or gel batteries, which are flexibly configured according to actual budgets and performance requirements. The appropriate battery capacity not only affects the system endurance, but also directly affects the stability of the system operation and the investment return cycle.
4. Off grid inverter
The inverter is a key component of the off grid solar power system. It mainly converts the direct current (DC) generated by the solar panel/stored in the battery into alternating current (AC) for load power supply. Large off grid solar inverters have powerful output capabilities, and both power and voltage can meet the power needs of various large loads.
With the continuous advancement of solar technology and the decline in energy storage costs, more and more industrial and commercial, large scale government projects, etc. will choose large off grid solar power systems to generate electricity and as a long term economic investment. So, what are its advantages?
1. Strong independence
In areas with frequent power outages or no grid coverage, large off grid solar power systems can independently meet local electricity needs, without being affected by factors such as grid outages and power restrictions, and provide users with a stable power supply. The system can provide power 24 hours a day, and with energy storage batteries, it can still provide sustainable power supply even on cloudy days or at night, ensuring the normal operation of key infrastructure such as hospitals, schools, farms, and factories.
2. Reduce operating costs
Although the initial investment cost of large off grid solar systems is high, compared with traditional power generation methods such as diesel generators and power grids, the operation of solar systems has almost zero fuel costs and low maintenance requirements. Solar power does not require fuel consumption, and the maintenance cost is relatively low, which can save users a lot of electricity expenses. For some users with large and long term stable energy demand (such as large enterprises, mines, farms, etc.), investing in large off grid solar power systems can bring considerable returns on investment.
3. Reduce transmission losses
Traditional power grid power supply needs to transmit electricity from the power plant to the user end through transmission lines, and there will be certain transmission losses in this process. Large off grid solar power systems generate electricity directly at the power consumption site, without the need for long distance transmission, avoiding energy loss during the transmission process and improving energy utilization efficiency.
4. Large power capacity and wide coverage
Compared with small household systems, Xindun large off grid solar power systems have a design power range of 8KW-160KW, which can meet high power load operation. The system can cover the entire community, factory, plantation, industrial park, and provide all round power supply guarantees from lighting, cold chain, irrigation to industrial electricity. The large capacity design effectively improves energy utilization and system economy, and is very suitable for scenarios with high requirements for continuous and stable electricity consumption.
Large off grid solar power systems are widely used in places with power shortage or unstable power supply, such as large power base stations, factories, mining, commercial building projects, etc., which usually have a large demand for electricity. Large off grid solar power system have the characteristics of large output power, strong overload capacity, and stable voltage, which can ensure the continuous operation of large load equipment, water pumps, machinery and other high power loads. Equipped with a battery energy storage system, it can achieve stable power supply around the clock in an environment without a power grid, greatly reduce electricity costs, and improve power self sufficiency. Xindun can provide efficient and stable large scale solar power systems, and below are some examples of large off grid inverter systems installation reported by some customers:
As a professional manufacturer of off grid solar power systems, Xindun mainly develops, produces and sells off grid solar inverters, batteries, solar controllers and other off grid solar power system components. Our large off grid 3 phase solar power system has an ultra wide power range of 3.2kw-160kw, supports 100% unbalanced load, and also supports single phase and three phase voltage output, triple peak power, can withstand the voltage output of high power loads, and meet diverse power needs. Strong battery compatibility, low battery voltage input, adaptability to a variety of battery configurations, and efficient energy storage. It can easily handle both low power and high power loads. We provide professional OEM/ODM customization services and full process technical support to ensure that every distributor and contractor can efficiently complete project delivery, reduce operating costs, and enhance market competitiveness.
