New photovoltaic products, strategic agreements unveiled on day 1 of the SNEC – pv magazine International
The first major solar event since the Covid-19 pandemic closed trade shows and conferences around the world on the 15the SNEC got off to a successful start yesterday in Shanghai, China, attracting a large number of visitors. pv magazine Journalist Vincent Shaw walked the floors to talk to movers and PV shakers and find out what new PV products and plans were on offer.
Manufacturing giant Longi Solar has unveiled its new TOPCon “Hi-Mo N” type n photovoltaic panel. Executive Vice President Dennis She said it includes n-type HPC solar cells with efficiencies of up to 25.21%. He added that the maximum efficiency of the new module is 22.3%, on a 570 W product.
The module is also said to be PID-free, with a degradation of 1% the first year and less than 0.4% the following years. “HPC”, according to Li Hua, head of cell technology research at Longi, represents the terms “high performance cell” and “hybrid-passivated contact”.
Given the size of the company and the current high price tag for n-type cell technology, the news is interesting in terms of what this might mean for pricing going forward. Analysts predict that by 2025, Type n will start to become the dominant technology. The involvement of major manufacturers is important for this trend to materialize.
Strategic Hydrogen Agreement
Longi also signed a strategic cooperation agreement with Shanghai Tongji University to establish a hydrogen laboratory in Shanghai for green hydrogen research.
Hydrogen equipment, storage and transportation and green hydrogen applications will all be the focus of attention. Li Zhenguo, chairman of the board and chairman of Longi, said the company aims to become the world leader in hydrogen technology and will work closely with Tongji for technology research and development, recycling of personnel and the transformation of R&D into production.
More new photovoltaic modules unveiled
Huansheng Solar, a joint venture between Zhonghuan Semiconductor and Maxeon, which focuses on the company’s photovoltaic module component, also launched two new module products at SNEC 2021.
The first is a new 670W power module based on the large 210mm wafers from Zhonghuan. The G12-69P bifacial duo-glass panel is equipped with stacking technology and has an efficiency of 21.6%. To achieve this, Zhonghuan used laser curve cutting and conductive adhesive to connect the cells. According to the company, the new product is particularly suitable for large-scale photovoltaic projects.
The second solar module uses rear interdigital contact (IBC) cell technology. The total weight would be about half that of traditional products on the market, because the thickness of the cells is about 1/10e that of regular cells. Its efficiency, for its part, would be greater than 21%. Zhonghuan did not mention the costs or when the IBC module will go into mass production.
Suitable for residential PV
JinkoSolar has released its latest Tiger Pro series PV module with a power of 415 W. Its dimensions include 1.1 mx 1.7 m and weight of 22 kg, which makes it suitable for one person installation.
With a very high load capacity of 6000Pa / 4000Pa, this module is particularly suitable for the residential rooftop PV market. Jinko provides 15 year quality assurance and 25 year power generation warranty for this product.
Zero gap technology
JA Solar has also released a new module, the DeepBlue 3.0 Pro, which is an upgrade from its previous product DeepBlue 3.0. Thanks to the new zero gap technology, yields of 21.7% have been achieved, 0.4% more than the previous version, while remaining available at the same cost.
A 72-cell glass / backsheet module achieved an output power of 560 W. And the larger 78-cell product reached 605 W. Compared to other high-density interconnect configurations, JA Solar claims that its new DeepBlue module uses advanced software connection and erases the risk of cracks on the connection.
JA Solar has stated that the 182mm wafers are the optimal size for this PV product. All of the company’s new module products are now based on 182mm inserts, its PERCIUM cell technology and 11 bar and half cut technology.
New generation PV inverters
TBEA has launched its new generation of 1500V 300KW + string inverters: the TS315KTL-HV and TS330KTL-HV, which respectively offer a maximum capacity of 315 KW and 330 KW.
These string inverters support 24 input lines, 12 MPPT with a maximum current of 48A for each, and are meant to be suitable for high power 182mm or 210mm PV modules.
Based on this new 300 KW + series PV inverter, TBEA promotes system solutions for 4 MW PV installation units. According to its calculations, compared to a conventional 3.15 MW unit, the new 4 MW unit will reduce average construction costs by 2.36%, cable costs by 0.36%, installation costs by 0.16% and operation and maintenance costs of 1.62%. At the same time, the total discounted cost of electricity (LCOE) will be reduced by approximately 1%.
Sungrow Floating PV, a subsidiary of inverter manufacturer Sungrow, has signed a strategic R&D cooperation agreement with Jiangsu Ocean University for the development of floating photovoltaic technology in offshore and coastal areas, and for staff training.
Sungrow said China has many offshore areas for floating PV installations. However, as the area faces severe conditions, such as wave impact, for example, it is essential that floating networks and anchoring systems have high wave tolerance.
The strategic cooperation with Jiangsu Ocean University will allow the two sides to work closely together to target key technologies and solutions to these problems.
The biggest inverters
Solis came to this year’s SNEC with its flagship string inverter product, the G6-GU320K-EHV – a typical representative product for the high current and high power market. The maximum power of the inverter can reach 325 kWA, making it one of the string inverters with the highest rated power to date.
This inverter uses 1500 VDC and can operate in temperatures ranging from -45 to 60 ℃. According to Solis, under extreme conditions, the total production in 25 years for this type of inverter will be at least 3.4% higher than that of conventional types. In addition, the maximum current input is 45A for each MPPT, making it the largest MPPT current string inverter, which has greatly improved the safety of the system.
Beware of other SNEC reports later.
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