Continuous Improvement | Update and Iteration of Grewatt Inverter

For decades, the photovoltaic industry has been advancing steadily, and technological innovation has been the core driving force behind its continuous progress. Stability is the key to achieving long-term success. Over the years, WAET has been steadily developing, continuously innovating, and iterating its inverters. From the continuous breakthroughs and upgrades in high current, as well as the constantly increasing power density, we can see the continuous improvement of WAET. 01 has great potential to adapt to the development of large components with high current. In recent years, with the continuous development of solar cell and photovoltaic module technology, the size of silicon wafers has been increasing, from 158mm to 166mm, and then to 182mm and 210mm. The output power of modules has also exceeded the 600W mark. From the perspective of the industry chain, the widespread application of high-power and high current components can lead to DC current limiting if the string currents of inverters do not match, affecting the power generation of the power station. Therefore, while the technological innovation of solar cells and photovoltaic modules is underway, higher requirements have been put forward for the adaptability and compatibility of inverters. Since then, WAET has closely followed the trend of component technology development, enabling photovoltaic inverters to embark on a journey of deep evolution. The MID 17-25K TL3-X series of household inverters, launched as early as 2019, can achieve a string current of 12.5A and is compatible with double-sided components. The MOD 10-15K TL3-X and MID 30-40KTL3-X series, launched in 2020, have a string current of up to 13A and are suitable for high-power components. The MID 33-50 KTL3-X2 series launched in 2021 can achieve a maximum output current of 16A for each string. The MAX 100-125KTL3-X LV string current of the industrial and commercial inverter launched in 2021 is 16A, perfectly compatible with 500w+high-power components on 182mm silicon wafers. In just one year, the MAX 100-125 KTL3-X2 LV industrial and commercial inverter, launched in 2022, has achieved a string current of 22.5A and can perfectly adapt to 600W+components on 210mm silicon wafers. This model has become the industry's largest string current industrial and commercial model. 02 Stable and efficient power density continuous improvement household inverters are suitable for home roofs or courtyards, and the weight of the product is particularly important. For household inverters, the product is compact, lightweight, and can be installed and transported by a single person. The workload in transportation, maintenance, and other aspects is also reduced, which is conducive to reducing the cost of the entire project lifecycle. WAET's different series of products all achieve the lightest weight and industry-leading power density in the industry. MIN 3000-6000TL-X， Using polymer aviation materials, the weight is only 10.8kg; MOD 3000-6000TL3-X weighs 13.5kg; MOD 8-11 KTL3-X weighs 15kg; MOD 12-15 KTL3-X weighs 17kg; MID 20-30 KTL3-X2 household inverter weighs 22kg; MID 33-50 KTL3-X2 household inverter weighs 30kg. The lighter the weight of these products, the greater the power, and the power density is effectively improved. The increase in power density makes installation and transportation more convenient, maximizing the cost-effectiveness of the product. For example, the MID 20KTL3-X2 series household inverter has an aluminum shell, which is lightweight and durable. The product weighs only 22kg, reducing weight by 54% and increasing power density by 52% compared to the previous generation. Efficiency up to 98.75%, 16A string current design, perfectly matched with high current and high-power components. The commercial and industrial model MAX 100-125 KTL3-X2 LV weighs only 84kg and measures only 970 * 640 * 345mm. It is currently the lightest and highest power density product among the 100-125KW power range inverters, providing great convenience for product installation and handling. Since its establishment, WAET has grown and changed together with the photovoltaic industry. The changes in string current and power density are only a small window to reflect the upgrade and iteration of the WAET inverter product. Every product upgrade and iteration of WAET takes into full consideration the entire system, in addition to conversion efficiency, it also considers comprehensive protection, stable operation, safety and reliability, and grid friendliness. In the future, WAET will remain committed to the development and application of new products, technologies, and processes, and continue to provide customers with smart energy solutions.