Sometimes, the best component is not always the best. I assume these were left out of the equation as the project focuses on the converter and not the complete installation. PS: regarding efficiency and losses, sometimes even the cables towards the electronics can do a few percent. Please tell us more, so we can learn, seriously, this is potentially interesting stuff.
Was the high efficiency DC-DC controller made from scratch or was the design (and 97% claim) copied directly from the datasheet of a regular DC-DC converter that only does 97% when switched off? The project page just isn’t clear about that.
It read like a tell-sell commercial, trying to scare the viewer of with technical terms that hold no real info. But for now I remain skeptical.Īs I could not find any serious information in how this was really achieved (and/ or measured). I would like to say “hats of, project well done”. The project page even states “Efficiency > 97%”, that almost approaches the efficiency of a bare wire and then doing some conversion as well. Why do I ask you may wonder? Well 97% is pretty darn good and considering the wide span of 1.75Watt well that almost sounds to good to be true. I would like to read more details about how that was achieved, first the calculations and then the technical details. I don’t want to be negative… but an efficiency of 97% ?!?! We went into some detail on MPPT in the past, and after three years in development creating a modular and configurable design, hopes no one will have to re-invent the wheel when it comes to charge controllers. An MPPT (Maximum Point Power Tracking) charger is a smart unit optimized to handle all these changing conditions for maximum efficiency.
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The design is now mature, and the High Efficiency MPPT Solar Charger is full of features like data logging, boasts a 97% efficiency over a range of 1 to 75 Watts, and can be used as a standalone unit or incorporated as a module into other systems. One thing that became clear to during the process was that a highly efficient, feature-rich, open-sourced hardware solution for charge controllers just didn’t exist, at least not with the features he had in mind.ĭata logging and high efficiency are important for a charge controller, because batteries vary in their characteristics as they recharge and the power generated from things like solar panels varies under different conditions and loads. A few years ago, needed a solar charge controller and made his own, which he has been improving ever since.
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