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Archives from Category Technology

What Does an Off-grid System Actually Do?

From on 03.04.2012 in Category Technology with 0 Comments
SMA_Hybridsystem Kolondieba

Dry red earth. The sun is shining. PV modules are gleaming in the light. The PV plant is operating at full capacity. We’re in Mali. An off-grid system was just recently commissioned here in this western African country. And now it’s supplying electric current to private homes, a school, several workshops, a hotel, and a number of businesses. Building an off-grid energy system like this one requires a reliable inverter that can create and manage a power distribution grid. And ours is called the Sunny Island. It provides a means to supply electricity to under-developed areas or even closer to home in a remote cottage in the German Alps using renewable energy.

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Sand and Dust: Sunny Central CP in a Stress Test

From on 28.02.2012 in Category Technology with 0 Comments
Sunny Central

Fine, red dust swirls through the air. What begins as a gentle breeze grows into a storm. If we were outdoors, the first branches would snap; it would become hard to walk in a straight line. Of course the Sunny Central CP does not waver in the test chamber of the Swiss testing facility, but the purpose of the SMA sand and dust test is not to prove its stability. Rather, it is to demonstrate that the interior of the inverter remains free of debris.

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What Does a PV Inverter Actually Do?

From on 18.01.2012 in Category Technology with 2 Comments
The solar inverter converts direct corrent into alternating current

Almost everyone is familiar with the shiny panels (or photovoltaic modules in technical terms) that can usually be seen on rooftops, yet very few know anything about their corresponding devices in the basement (they’re not always in the basement, but more on that later). These devices are called inverters and they are worth knowing about, not merely because of their distinctive names such as “Sunny Boy” but also due to their critical function in PV plant. So what is the actual purpose of an inverter and what must it be capable of?

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