As the key equipment of the entire photovoltaic power generation system, PV inverter has always been the focus of EPC and end-users. At present, there are many kinds of inverters in the domestic market. There are many kinds of inverters in North America, In fact, as EPC and end-users in the use of photovoltaic power generation system, the first thing to consider is the issue of revenue, the cost of Low, stable and reliable, high efficiency and power generation products must be the first choice.Although the cost of the inverter is only about 1/8 of the cost of the entire photovoltaic power generation system, but its quality directly determines the efficiency of the entire photovoltaic power generation system.
So in the end how to choose a good inverter, to ensure the efficiency of photovoltaic power generation system?
A look at the performance. To be stable and stable performance means that the equipment failure rate is low, a frequent equipment failure, the conversion efficiency is high, the power generation efficiency is not high to judge inverter performance unstable, there are four ways : ① see the test results, buy a few try, practice test truth; ② see word-of-mouth, to understand how the end-user evaluation; ③ look at the product work, stable performance of the product, work will not be too bad; ④ look at the factory and products Line production capacity, quality control and production process determines the quality of the product.
Second, see the efficiency of the same model equipment, high efficiency means the same period of high power generation to determine the inverter high efficiency is not high, there are two ways: ① look at the conversion efficiency of the equipment; ② see MPPT efficiency, MPPT high efficiency This means maximizing the use of lighting, especially in cloudy weather, MPPT tracking of efficient inverter can reduce the loss of light, to ensure the maximum possible inverter output power.
Third, look at the protection and protection functions.Because of complex grid environment, a good device must be fully functional, able to respond to a variety of unexpected situations, such as: leakage current detection, insulation testing, power grid monitoring, etc. Large power plants also require reverse Inverter has island protection, low wear function, etc. Also requires outdoor protection level, lightning protection, electromagnetic compatibility and other parameters compliance.
Fourth, look smart and friendly. Easy handling, easy installation, foolproof operation, equipment status can be monitored anytime, anywhere, remote settings can be a key and network debugging, is a good basic requirements of the inverter.
September 28, 2017, a series of cool inverter available, he not only fully meet the above-mentioned conditions, but also small and beautiful appearance.
① efficient power generation
A. The maximum efficiency of 98.5%, excellent power performance
B. Wide operating voltage range (160V-850V)
C. 120% over input, output overload 110%
② smart and friendly
A. A key self-test debugging and network, take the initiative to tell you where there are still problems, save time and effort
B. Light weight (15KW only weighs 21.8KG)
③ safe and reliable
A. Aluminum die-casting one-piece shell, high degree of protection
B. Selection of world-class high-quality components
C. Fanless design, scientific layout, maintenance-free
In the current market, the products of the inverter have serious homogeneity, the brands, the quality and the price are different. Users should give priority to the quality when selecting the products. As the inverter industry technology continues to innovate, the inverter will move toward more Light, smaller, smarter and more diversified, the more users will choose the inverter standard
