AETI Introduces Utility-Scale Inverter Solution

AETI’s Integrated Solar Inversion Station is delivered to a project site as one integrated solution designed for IEEE 1547 and UL 1741 specifications. The 1-MW system incorporates a photovoltaic (PV) master combiner and disconnect, dual 500 kW grid tie inverters, medium voltage switchgear and transformer, and integrated cooling system for quick deployment of solar power conversion, control and distribution.

The Integrated Solar Inversion Station inverts up to 1200 volts of PV power and outputs directly to 15-kilovolt (kV) medium voltage (MV) alternating current (AC) power collection systems. This is facilitated by the station’s PV interconnection system, dual redundant grid tie inversion system and MV interconnection system.

The interconnection system includes a 12-circuit, 1600 amp direct current (DC) master combiner and disconnect switch. When the disconnect switch is opened, the system isolates itself from the grid with no arc flash, providing safer and higher performing solar power substation operations.

“As a leading supplier of power conversion and distribution equipment for some of the world’s most severe climates for more than 60 years, AETI is very much attuned to the industry’s need for the highest level of solar farm operating efficiency and reliability available,” said John Skibinski, vice president, renewable energies market development, AETI.  “Our commitment to meet this need is a key driver behind an innovative approach that includes using utility-grade electrical and cooling systems components and additional PV panels per string to increase PV input and operating efficiencies beyond 97 percent.

The Integrated Solar Inversion Station is designed and manufactured for a 20-year life and climates that range from -40°C to 52°C without de-powering. It uses liquid-cooled UL listed power modules, redundant cooling fans, and dual grid tie inversion redundancy for continued operation.