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The Alternative Power Network, how it started At CCCamp2015 we have had the idea to build a small DC grid suitable for being used on events where normally diesel generators supply most of the power. We wanted something safe, simple and transparent where everybody can be a supplier or a user of electric energy. For safety reasons we chose a voltage of 42V (+/- 15%), a bit below the "safe to touch" voltage maximum of 60VDC. This way there is a bit of headroom for the over-voltage protection circuit.
At "Still Hacking Anyway 2017" the first test grid was laid out. It has been running the whole camp without any big issues. Solar panels were attached, tea was made with solar power, lithium batteries were charged and even a 48-300V (2500W iirc) bi-directional DC-DC converter setup was tested. TDK-Lambda was kind enough to supply us with two of those fantastic units.
