Munich, Germany ' 8 October ' With the launch of the latest V PV string inverter SG350HX, Sungrow offers a new market leading solution that features a maximum output power of 352 kW. Thus, compared to Sungrow's last generation inverter, the new inverter offers a significant increase in output power of about 40 percent. The inverter comes with products from Infineon Technologies AG (FSE: IFX / OTCQX: IFNNY) contributing to this performance increase: the customized EasyPACK' power modules equipped with the newly released CoolSiC' MOSFET, the latest generation CoolSiC diode along with the latest TRENCHSTOP' chip technologies.
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'Sungrow is dedicated to paving the way for global carbon neutrality with growing technical innovations. We are accelerating our steps to fulfill the corporate mission of 'Clean power for all',' said James Wu, Vice President of Sungrow. 'To make this possible, the new SG350HX redefines the super-high power string inverter and helps Sungrow's customers to reduce the cost of energy.'
'We are very pleased to continue our successful collaboration with Sungrow and leverage our technology expertise in the area of renewable energy,' said Dr. Peter Wawer, President of the Industrial Power Control Division of Infineon. 'Leveraging our expertise on technology and production allows us to tailor solutions based on customer needs while giving full support during ramp-up.'
The inverter supports a DC/AC ratio of up to 1.8 and is highly compatible with 182 mm and 210 mm large-sized high-efficiency modules with a maximum input current of 20 A. This allows to use solar modules with power ratings of 600 W and higher. The device can operate stably in extremely weak grid conditions.
Weighing only 110 kg, the inverter features twelve MPPTs (Maximum Power Point Tracking) at 40 A. With two strings connecting to one MPPT, there is no threat of a string reverse connection. Each one helps to increase the power density by approximately 28 percent compared to the previous generation. Thanks to smart-forced air-cooling technology and IP66 protection, the solution can be installed in harsh conditions.
More information about Infineon's contribution to energy efficiency: www.infineon.com/green-energy
About Sungrow
Sungrow Power Supply Co., Ltd. ('Sungrow') is the world's most bankable inverter brand with over 182 GW installed worldwide as of June . Founded in by University Professor Cao Renxian, Sungrow is a leader in the research and development of solar inverters with the largest dedicated R&D team in the industry and a broad product portfolio offering PV inverter solutions and energy storage systems for utility-scale, commercial & industrial, and residential applications, as well as internationally recognized floating PV plant solutions. With a strong 24-year track record in the PV space, Sungrow products power installations in over 150 countries.
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Sungrow's major launch at Intersolar Europe in their utility string inverter range is the SG350HX, a three-phase 352 kVA device billed as one of the world's most powerful string inverters. Already available in China and India, Sungrow is bringing the upgrade to the SG250HX in mid- for utility-scale solar projects.
The added power capacity of the SG350HX was driven by the increasing use of large-format high-efficiency and bifacial PV modules. A maximum input current of 20A, each string provides easier use of modules with power ratings of 600 W and above, and supports a single block design as large as 8.96 MW.
It weighs approximately 111 kg, with 99.01% efficiency, a European efficiency rating of 98.8%, and max voltage of V DC. The SG350HX retains the IP66 rating of the SG250HX.
pv magazine spoke with Javier Blanco, Technical Director for PV Business with Sungrow EMEA, at Intersolar Europe, about the SG350HX, and emerging trends in the market driving larger, more powerful string inverters.
'The point in power conversion equipment is to increase power density. It's the way to be competitive as a manufacturer and to make our customers competitive too. And the main reason we've stepped up is larger modules, 600W and above,' said Blanco.
And with larger modules and designs adding more power, everything must step up. 'If you want to keep the same PV plant layout, inverters placed in the same position as in the previous designs, there is actually more DC power connected to each inverter. Inverters have to be more powerful, as well as the substations, in order to keep the CapEx of the BoS low,' he said.
'We keep the same number of MPPTs [12, as in the SG250HX] simply because the modules are bigger. It's a scale that comes more from the increase in the power of the modules than the inverter design itself. You see the configuration: 24 strings per inverter, 28 inverters per station. When the 250HX was designed in , the mainstream module sizes were something around 450W, now they're 650W and over. It's been quite a rapid change.'
Blanco suggested that the future looks like it may go beyond the current V DC max input voltage, with a step-up in voltage: V DC would keep the competitiveness of the technology high, though IEC regulation inside Europe is 'not yet at that stage,' meaning 'significant challenges exist.' Outside of Europe, Blanco said a max V DC pilot project in China shows a path to a possible future.
LCOE advantages are present with the SG350HX. 'CapEx will be reduced, with fewer inverters needed for the same pavement, less labor. OpEx will also be reduced because there are fewer units to maintain of course, so there'll be a progressive version of LCOE with us,' continued Blanco.
Asked about trends in the industry popping up at Intersolar, Blanco confirmed increased technical interest in energy storage solutions offered alongside solar installations, and more talks where wind operators are seeking to add complimentary solar. He also mentioned a likely future trend, where solar, wind, and storage are combined, bringing fresh challenges to manufacturers.
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