Sungrow: Key benefits of DC coupling ESS solutions

Until now, AC-coupled systems have been the solution of choice for coupling large battery storage systems to PV power plants, due to their lower costs. These involve two or more energy systems (PV and storage systems or only storage systems) working separately from one another on the DC side. The energy paths are then coupled together on the AC side upstream of the connection to the medium-voltage grid / Point of Interconnection (POI), hence the name of AC coupling.

In the case of high DC/AC ratio, the power limitation of POI has become another obstacle to increasing the revenue of photovoltaic power plants. Traditional storage plus solar applications have involved the coupling of independent and PV inverters at an AC bus. The equipment cost is high, the technology is complicated, and the system reliability can be poor.

Join this PV Tech TechTalk Product series webinar with major PV inverter manufacturer and ESS provider Sungrow to fully understand the key benefits and applications of DC-coupling solutions for utility-scale PV power plants across Europe.

Key points:

• Learn about the key benefits of using Sungrow’s ST3727KWH(L)-D1250HV+SG3125HV-MV DC-coupling solution
• Understand how the DC-coupling solution provides essential functions for future proofing ESS integration and operation
• Find out why the system comes with minimalized system costs compared with AC solutions in certain cases, enhanced energy conversion performance and higher levels of reliability and durability

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