A SNC extension (Shanghai New International Expo Center) 2024, which was held between June 13th and 15th in Shanghai, China, brought several new developments for the solar energy market.
Among the highlights was the panel with Hyper-Ion HJT technology from Risen Energy, with an efficiency of 24.70% and 767.38 Wp. According to the company, the product reached the power world record of photovoltaic modules.
Another advantage is that the equipment frame is steel, not aluminum – which provides greater mechanical resistance, as well as heterojunction panels have 24 bus bars – thus increasing overall efficiency, as it has greater flow capacity and fluidity for the current within the module.
ABC Technology – All Back Contact
In addition to HJT technology, it was possible to find the module at SNEC Neostar 1U+ from AIKO Solar, that have ABC cells (All Back Contact), with power of 655-680 W, efficiency of 24.3% and 2465*1134*30 mm.
According to the company, the ABC cells They don't have the busbars on the front, in this case, they are on the back. In total, the technology provides a 6% generation gain on the front and loses 10% at the back, however, as the generation actually takes place at the front, in the end the net gain is 3% to 4% for the panel as a whole.
During the visit to the AIKO stand, the Canal Solar He also spoke with one of the engineers who developed this technology, who pointed out the solution's other differences.
In the conventional cell, when it is shaded, in addition to not generating energy, obviously due to the shade, it also does not conduct electrical current. Then the bypass diode comes into action and removes all lines that are shaded from the circuit.
A ABC cell has the ability to conduct current, even with shading, larger than the conventional cell. Therefore, when it is shaded, it will not generate energy, but that cell can still conduct electrical current. It's as if the manufacturer had bypass diodes in each of the cells.
Modules for offshore applications
During the two days of the fair, visitors learned about solutions aimed at applications at sea, such as the Infinity RT module, from DMECG Solar, which has a power of 600 W and an efficiency of 23.2%.
As explained to Canal Solar In the event, there is great government incentive for floating photovoltaic plants at sea due to space. Furthermore, the product has a frame that is not aluminum, it is made of polymeric material, as well as having a special connector for such applications. They are more robust and have a whole concept to prevent moisture from entering.
Hybrid inverters
With respect to hybrid inverters, companies like Growatt and GoodWe displayed their portfolios. Growatt's highlight was its 127-220-V split phase model for installations in the Brazilian market.
GoodWe presented the hybrid inverter from ET line, which has as its main advantage the high voltage battery modulationO. “You can, in a single tower, have 28 kW of storage and can reach up to 232 kWh, serving everything from commercial to industrial lines, both peak and peak shaving hours”, he stated. Merivaldo Britto, GoodWe Brasil ambassador.
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