Fixed String Voltage Addresses Large-Scale PV Challenge

Large-scale commercial and utility-scale solar projects face challenges: Fluctuating DC voltage, inefficient inverter operation, and limitations on string length and layout flexibility. These issues can lead to energy losses, increased balance-of-system (BoS) costs, and constrained project design.

Fixed string voltage technology addresses these pain points by ensuring consistent, optimized voltage levels across the system, maximizing performance and long-term return on investment.

What is Fixed String Voltage and Why Does It Matter?

Fixed string voltage refers to a system architecture where power optimizers regulate and maintain a consistent output voltage from each string — typically around 1250 Vdc, regardless of module mismatch or environmental variation.

In 1500 Vdc systems, SolarEdge H-Series power optimizers maintain each string at a nominal voltage — typically 1250 Vdc — allowing the inverter to operate at its highest efficiency point consistently.  Keep Reading...

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