One of the most important aspects of designing a solar array is sizing module strings to operate within the parameters of the selected inverter. Renewable Energy Associates (REA) has developed a tool to help in that process. Most inverter manufacturers offer some type of sizing tool. Whether it’s simple or advanced, it’s usually limited to selecting only their products. The REA System Sizing Tool lets you select from a wide variety of products and manufacturers.
This updated String Sizing tool includes a large re-work of the modules and inverters used in the existing database.
There are significant updates in verifying inverter specifications and the interaction of multiple MPPTs in the inverters and the string sizing calculations. We have also identified the top areas for additional improvement, including: expanding the inverter list to include inverters with three MPPTs and dc optimizers.
Ryan Mayfield has been working in the renewable energy field since 1999 and is the President of Mayfield Renewables (formerly Renewable Energy Associates), a consulting firm providing design, support and educational services for electrical contractors, architectural and engineering firms, manufacturers and government agencies. Ryan serves as Photovoltaic Systems...[more]
This tool is used in HeatSpring's Megawatt Design course.