String Optimizers aim to Increase Performance of PV Systems
Ampt LLC today released their new String Optimizer, a dc power converter with multiple maximum power point tracking (MPPT) and output voltage and current limits to optimize system design and maximize performance of large-scale PV systems. Ampt String Optimizers are deployed in large-scale PV systems to lower cost and increase performance. This optimized system has twice the number of modules per string and higher resolution MPP tracking than conventional systems without Ampt. More modules per string decreases the number of combiners by 50 percent and reduces the amount cabling which results in significant electrical balance of system savings.
Putting MPPT on each string increases lifetime system production. Systems optimized with Ampt use inverters configured to operate in Ampt Modeâ„¢. These inverters have a higher rated output power and operating efficiency compared to the same inverter operating in standard mode. Delivering more power per inverter reduces the overall cost per watt.
"Our String Optimizer lowers the total cost of the largest of PV systems," said Levent Gun, CEO at Ampt. "It not only optimizes on cost, but it also distributes the MPPT so you get more energy out of the system. This is a significant advancement for PV system design and a step closer to grid parity."
Ampt String Optimizers include the following features: Multiple MPP trackers per PV string to improve system performance; Ampt Modeâ„¢ technology to increase inverter output power; String Stretchâ„¢ technology to double the number of modules per string; Patented output voltage and current limits; Independent power optimization without reliance on communication; and Compatible with any inverter and enables HDPV-compliant inverters.
"In an effort to lower the cost of electrical components, large-scale PV developers and EPCs are looking to next generation system designs," said Dean Solon, CEO at Shoals Technologies Group. "Shoals' portfolio of products is first class in lowering total system cost. Ampt's String Optimizer, manufactured by Shoals, allows developers to deploy PV power plants with the cost saving benefits of a 2000 volt system using only 1000 volt components while meeting all 1000-Volt code requirements. At the same time, deployments with Ampt increase system lifetime performance."
