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DAH Solar’s Full-Screen Technology Demonstrates 11% Energy Gain for solar PV Modules

DAH Solar’s Full-Screen Technology Demonstrates 11% Energy Gain for solar PV Modules

DAH Solar’s Full-Screen Technology Demonstrates 11% Energy Gain for Solar PV Modules As frameless PV modules are gradually becoming a mainstream trend in the industry, PV magazine had an interview with DAH Solar’s R&D Director, Dr. Jiang Chengyin, about the company’s design for its 3.0 Full-Screen product version further improves energy yield while lowering costs and reducing the likelihood of fractures. What is the “Full-Screen” technology for solar modules? Dr. Jiang Chengyin: Regular solar modules have frames that protrude above the glass surface, causing dust to accumulate since rainwater can't flow off quickly. Through our patented design, we ensure the frame is flush with the surface, allowing rainwater to smoothly run off and carry away dust, achieving a self-cleaning effect. Based on outdoor performance tests, at an installation angle of around 5 degrees, which simulates the typical installation angle on most domestic color steel tile roofs, our Full-Screen modules can achieve an annual energy gain of approximately 11%. With the elimination of traditional aluminum frame wrapping, can the Full-Screen's flat edge design meet structural rigidity requirements? How does it withstand long-term outdoor sealing performance? Dr. Jiang Chengyin: Originally, double-glass modules had no frames. With encapsulation of double-sided strengthened glass fully meeting the module's strength requirements. Adding frame designs primarily protected glass edges from damage. Since the distance from the internal cell's conductive part to the module edge is generally over 15 mm, the waterproof sealing insulation width at the edge is also 15 mm, ensuring long-term outdoor sealing. DAH Solar's design eliminates the front frame but retains side and back frames, bonded with high-strength silicone rubber, maintaining glass edge protection. Silicone rubber offers proven durability and weather resistance. What improvements does DAH Solar's Full-Screen product at this SNEC exhibit offer compared to previous models? Dr. Jiang Chengyin: Our Full-Screen product has advanced to version 3.0, which is a significant improvement over versions 1.0 and 2.0. First, we have adopted the Full-Screen plus “Dense Busbar” (DBB), which is a design similar to 0BB. DBB technology has several advantages, notably significantly reducing silver consumption during cell production, lowering product costs. Additionally, in module production, we've abandoned high-temperature welding processes, using low-temperature film to bond ribbons to cell surfaces. This low-temperature encapsulation process enhances module power, reduces virtual welding and the likelihood of fractures, improves yield, and extends product life by avoiding flux residues that corrode grid lines. Overall, version 3.0 products show significant improvements in reliability and power generation compared to past versions. Furthermore, we now use industry-leading rectangular silicon wafers based on 182 mm as the substrate for TOPCon ce...

Power Generation Increased by 11.5%! The Full-Screen PV Module Outdoor Field Test Report Published by TüV Nord

2022-05-26

Power Generation Increased by 11.5%! The Full-Screen PV Module Outdoor Field Test Report Published by TüV Nord



TüV Nord published the outdoor field test report for the Full-Screen PV Module. This product is innovated by DAH Solar, and it has a global patent in 18 countries and regions. The report indicated the power generation for the Full-Screen PV Module is increased by 11.5%.


The rooftops with small-angle installation conditions would form the bottom soiling due to the nature rain wash and the altitude intercept between the regular PV module frame and glass. This problem is the primary reason that causes the shade and hotspots on commercial and household PV stations. This bottom soiling could form a “shading belt” with different widths. At some extreme conditions, the “shading belt” could completely cover the PV module, which will decrease the power generation, harm the PV module generation capacity, and shorten the life span of the PV module. The Full-Screen PV Module with frameless front A-side design could let the natural rainfalls wash away the dust. This innovation would avoid the bottom soiling and eliminate the power loss by dust covering.


TüV Nord Outdoor Field Test PV Power Station in Ningxia Province


The Full-Screen PV Module outdoor field test PV power station is located in Xixia District, Ningxia Province (38°36’56.77” N,106°0’52.27” E). The demonstrative test was implemented by TüV Nord, which relies on its testing and demonstration platform. This comparison test applied 182mm Cells Full-Screen PV Module(DHT-M60X10/FS-460W) with frameless front A-side design, which was independently innovated by DAH Solar and the 182mm Cells regular PV module(DHT-M60X10-460W). To control variables, each module contains 6X30 pieces of cell, and the power generation efficiency are both 460W. All the PV modules are 182mm Cells PERC mono-crystal PV modules. The fixed installation angles for both types of modules are 5° (simulate the installation angles of color steel tile rooftop). The comparison groups used the same micro-inverters to achieve the MPPT tracking. These 2 groups could showcase the different power generation performances for 2 types of modules under natural conditions. Before the field test, the 2 groups were exposed to the sunlight 60Wh/m2 and tested the initial power. Then the lab controlled the installation method, ground condition (soil, sand, rock, and grass), and the length of the PV cable.


The front irradiance is 170.28 kWh/m2 in April. DAH Solar produced the Full-Screen PV Module generated 73.21 kWh, and the cumulative power generation per watt is 161.17 Kwh/kW. The regular PV module generated 65.06kWh,and the cumulative power generation per watt is 144.54kWh/kW. Compared to the regular PV module, the Full-Screen PV Module increased the power generation by 11.5%. This field test illustrated the Full-Screen PV Module has advantages in avoiding bottom soiling and reducing dust covering.



Analysis of Power Response Characteristics of PV Modules in Different Temperature Ranges


The power responsiveness data of the 2 modules in each temperature range indicated that in each operating temperature range, the performance of the Full-Screen PV module per watt (performance per watt = average power ÷ measured power) is better than the regular PV Module. As the height increases, the difference in power response characteristics between the Full-Screen PV Module and the regular PV module is proportionally increasing.



Analysis of PV Modules Strong and Weak Light Response Characteristics


In order to research the power generation performance of the 2 types of module under various irradiation values. TÜV NORD compared the power response characteristics of the 2 types of module in each irradiation range. The result showcase that the Full-Screen PV Modules’performance is better than the regular PV modules in each irradiation range. As the irradiation value increases, the difference in power response characteristics between the Full-Screen PV Modules and the regular PV modules also increases proportionally.



The Full-Screen PV Module is innovated by DAH Solar. This product holds a global patent in China, Brazil, Germany, Spain, The United States, Australia, Japan, and other 18 countries and regions. The Full-Screen PV Module obtained high recognition and reputation all over the world, because of its power generation increasing and product reliability. The Full-Screen PV Modules are used in a wide variety of commercial and household roof PV power stations and BIPV projects. The Full-Screen PV Module won the TÜV Nord Outdoor Field Performance Award.



DAH Solar believes innovation is the way to lead development. DAH Solar innovates and develops based on the needs of the PV market and aims to solve the sore point of the PV industry. We work on the user's power generation revenue and product cost performance. We continuously increase R&D investment and bring higher valuable PV products to the industrial, commercial, and household markets.



Global Technology Leading PV Enterprise DAH Solar Co., Ltd. focuses on the R&D, manufacturing, and sales of high-efficiency power generation PV modules, integrated PV systems, and solar energy storage systems. DAH Solar committees to provide better solar solutions innovatively. With more and more needs for clean energy, DAH Solar continues to bring a more efficient, convenient, and reliable series of PV products to global users. Technological innovation and patented products With our leading technological innovation and excellent product quality, we enable global users more conveniently and stably to obtain efficient clean solar energy. We have 200 patented technologies used in our PV products. Our global patented product Full-Screen PV module achieves front A-side frameless design, which increases power generation by 6%-15% (field test result published by TUV Nord) compared to the regular PV modules. The world's first integrated PV system, SolarUnit, could maximize the installation area of the rooftop. SolarUnit made the integrated design of modules and inverters come true. SolarUnit provides users with a more efficient, convenient, safer, and beautiful residential PV system. SolarUnit promotes PV products in the era of home PV appliances. World Recognized PV Supplier DAH Solar's products have been sold in more than 100 countries and regions around the world. In Latin America, we have become the TOP 3 well-known PV companies in Brazil. In Europe, the demand for our innovative products, Full-Screen PV Modules, is exceeding supplies. Besides, to provide better service to global customers, we have established our warehouses in many countries and regions, like the EU stock in Rotterdam in the Netherlands. In addition, we have established very convenient purchase channels for global consumers. Customers can purchase DAH Solar’s products through distributors or official websites and E-commercial platforms. Social Responsibilities DAH Solar’s Solar Cells, Modules, and Inverters R&D and Production Factories Bases not only attract a large number of local high-end technical talents but also creates more than 2,000 job positions for local residents. Every year, we hold many social activities, such as donations to charities, responses to the Covid-19 pandemic, contributing to community growth, etc. to advocate for social development. Our ultimate goal is to embrace the era of clean energy to protect the environment and the behalf of mankind. Employee Development DAH Solar is committed to creating a better career development platform for our employees. We seek equity for all genders and ages in the workplace. DAH Solar offers our employees a free team-building trip, annually. We believe that refreshing is another path to creation. DAH Solar is also concerned about the health condition of our employees. That's why we provide our employees with free health checks and a full package of healthcare. At DAH Solar, we treat our employees not only as team assets but as our own families.

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