Photovoltaic inverters, as the key equipment of the entire photovoltaic power generation system, have attracted the attention of EPC and end-users. At present, there are a large variety of inverters on the domestic market. There are many main inverters in the North American market, and they are aimed at the entire country of India and also have layouts in Australia. Regional; single-phase, three-phase; with low pressure, high pressure, etc., can be said to be a dazzling choice. In fact, as the EPC and end-users must first consider the use of photovoltaic power generation system before the revenue problem, low cost, stable and reliable, high power generation products must be the first choice. Although the cost of the inverter only accounts for about 1/8 of the cost of the entire photovoltaic power generation system, its quality directly determines the benefits of the entire photovoltaic power generation system. So how can we choose a good inverter to ensure the efficiency of photovoltaic power generation system? Look at performance. The performance must be stable and stable means that the failure rate of the equipment is low, a device with frequent failures has high conversion efficiency, and the power generation efficiency is not high. There are four ways to judge the inverter performance is stable and unstable: 1 see the test results, try to buy a few, practice the truth test; 2 see word of mouth, to understand how the end-users are evaluated; 3 see the product work, stable performance products , Workmanship will not be bad; 4 look at the production capacity of the factory and product line, quality control and production process determines the quality of the product. Second, look at efficiency. The same type of equipment, high efficiency means that the same time period of high power generation. There are two ways to judge whether the efficiency of the inverter is high or low: 1 Look at the conversion efficiency of the equipment; 2 Look at the efficiency of the MPPT. The high efficiency of the MPPT means that you can maximize the use of light, especially in cloudy weather, MPPT tracking efficiency is good The inverter can reduce lost light and ensure the maximum power output of the inverter. Third, look at the protection and protection features. Due to the complexity of the power grid environment, a good device must be fully functional and capable of responding to various emergencies such as leakage current detection, insulation detection, and power grid monitoring. Large power stations also require island protection, low wear and so on. In addition, outdoor protection levels, lightning protection, electromagnetic compatibility, and other parameters are also required. Four look smart friendly. Convenient handling, easy installation, and ergonomic operation, the equipment status can be monitored anytime, anywhere, can be set remotely, and can be debugged with one-button grid connection. It is a basic requirement for a good inverter. On September 28, 2017, a series of cool inverters were introduced. He not only fully complied with the conditions mentioned above, but also was small and beautiful in appearance. 1 Efficient power generation A. 98.5% maximum efficiency, excellent power generation performance B. Wide operating voltage range (160V-850V) C. Over 120% input, 110% output overload 2 smart and friendly A. One-button self-test debugging and network, take the initiative to tell you where there are still problems, save time and effort B. Lightweight (15KW weighs only 21.8KG) 3 safe and reliable A. All-aluminum die-casting one-piece case, high degree of protection B. Selection of world-class high-quality components C. Fanless design, scientific layout, maintenance-free In the current market, homogenization of inverter products is serious and brands, quality, and prices are uneven. Users must still prioritize quality when selecting products. With the continuous innovation of inverter industry technology, inverters will be moving toward even more. Lighter, smaller, smarter and more diversified, the more users will choose inverters
A trick to learn how to choose a good inverter