Sunport claims to have reconciled rear contact and two-sided conundrum – pv magazine international

The metal-shell-focused module maker unveiled its M-series at the SNEC solar conference in Shanghai, claiming a bifacial rate of up to 70%.

As the dust settles after last week’s SNEC conference and solar show, the industry is still digesting the multitude of new products that have made their debut, including high-power tunnel oxide modules, at passivated (TOPCon) and heterojunction (HJT) contact from Trina Solar.

The world’s largest module manufacturer took advantage of the Shanghai event to launch an HJT product with an output power of over 700W and a claimed conversion efficiency of 22.55%. According to the manufacturer, the device is made without any cutting loss due to the direct use of semi-cut inserts and also features the minimal cell gap technology. Trina said the product’s attenuation in the first year is less than 1%, with no more than 0.4% in subsequent years. The panel’s temperature coefficient is 0.26% per degree Celsius and it offers 15% more bifacial rate than its PERC rivals, according to the module giant.

print edition of pv magazine

The latest edition of pv magazine is outside! Pick up your copy today for an overview of the switch to large format cells and modules. Coverage also includes TOPCon vs. HJT solar, colocation for green hydrogen production, price movements amid the polysilicon shortage and trends that are informing the growth of photovoltaics in Southeast Asia.

Trina’s n-type i-TOPCon panel is based on tunnel oxide passivated contact cell technology and offers a reported conversion efficiency of up to 24.58% in mass production. The total panel rate is 22.3%, according to Trina, for an output power of more than 700 W. The manufacturer said the device has an anti-hot spot function and a rate of attenuation in the first year of less than 1%. The bifacial rate of the product is 10% higher than conventional PERC products, added Trina.

Both new models are based on 210mm pads.

Elsewhere at the show, wraparound metal-focused module maker (MWT) Sunport claimed to have resolved the conflict between rear contacts and bifacial panels with its M-Series products. The product on display in Shanghai was based on a M6 wafer (166mm) and featured 72 semi-cut cells to deliver a claimed bifacial rate of up to 70%, especially on highly reflective terrain.

Sunport has also launched two other module products, with the company’s C10 panel featuring half-cut M6 wafers and, with the help of a triple parallel connection, delivering a claimed conversion efficiency of up to 21.5%. and a maximum output power of 660 W.

The highest specification Sunport C-Pro “super high power” panel combines MWT and heterojunction technology for a claimed conversion rate of 22.8% and maximum panel power up to 700 W.

UPS manufacturer Sunways has lifted the veil on three products in Shanghai, with devices for the residential, commercial and industrial markets.

Sunways STS 5KTL single phase grid connected inverter offers a high efficiency rate of 98.1%. STT 20KTL has higher power density and built-in power generation efficiency of 98.6% with built-in and advanced MPPT (Maximum Power Point Tracking) algorithm which can reduce power loss caused by changes rapid weather and multiple peaks of shade. The STT 100KTL inverter is suitable for industrial and commercial rooftop and solar installations, the manufacturer said. The product’s DC string voltage offers high energy density for low installation costs. With a claimed maximum efficiency of up to 98.8%, Sunways said the device is smaller than competing offerings.


Growatt presented its new MAX125KTL3-X BT string inverter. The 125 kW per unit offered by the product is the brand’s highest capacity for a distributed commercial and industrial device.

The product offers a maximum efficiency of 98.7%, and with 10 lines of MPPT and 80 MPPT for each installed megawatt, solar panels with the MAX125KTL3-X LV can optimize the efficiency of the string connection against the costs of balance of the system, according to the manufacturer. . The 16A average string current is ideal for bifacial solar panels over 500W, Growatt added.

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