diy solar

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  • Post in thread: Is an mppt a dc to dc converter that goes up and down?

    Turns out the goal is to get the solar panel at the max power out as defined by the solar specs. That translates to keeping the input voltage close to the impedance of the converter. While a buck will work at higher voltages it may be less efficient. A buck-boost converter would work also. To...
  • Post in thread: Is an mppt a dc to dc converter that goes up and down?

    I’m pondering the role of an mppt and why it might be better to feed a higher voltage aka a series connection of panels so that on quite days when levels are low, there is still enough voltage to supply battery. This is because on the surface an mppt is a step down converter. If however an mppt...
  • Post in thread: Is an mppt a dc to dc converter that goes up and down?

    So being an electrical engineer I understand power. Watts are watts. 10 amps at 20 volts is 200 watts. 5 amps at 40 volts same watts. My question was more directed at the dc to dc converter. In most cases a PV panel puts out more than 12 volts so the mppt aka dc to dc converter “steps down” the...
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