The new “Coolcept” inverter topology, with a circuit design for high efficiency, has been integrated into the StecaGrid 3000 and StecaGrid 3600. The “Coolcept” inverter topology is based on a single-stage transformerless switching concept that uses proven, standard components to implement symmetric step-down converters with downstream pole-reversing circuits. A peak efficiency of 98.6 % means less lost power that must be dissipated into the environment, and improved yields. The efficiencies of the StecaGrid 3000 and StecaGrid 3600 are only slightly dependent on the module input voltage. This allows the number and type of modules to be freely selected without resulting in a yield loss. In addition, a new cooling concept inside the inverter ensures an even distribution of the dissipated heat and a long service. The high efficiency also allows use of a design housing made of plastic, which keeps the overall surface temperature of the StecaGrid 3000 and 3600 very low. The inverters have protection class II. Also, these products have a graphical LCD display for visualizing the energy yield values, current performance, and operating parameters of the system.

Steca
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