Page Comparison

MPPTs

29-06-2023: Preliminary MPPT Testing

• Tested one of the MPPT boards using a power supply (Sparky) and load (Rigol DL3031)

• Load set to 25V, power supply to 2A and set to ~8V (max 15V)

• Power output around 16W, an efficiency of ~91-92%

Conditions: cloudy, no direct sun, ~22°

• Replaced the power supply with a large solar panel

• Voltage around 6V and current 7.78mA

• Load: ~25V; 0.027A; 0.6-0.7W

• Another panel connected in series, power output increased to ~0.6W

• When the protective layer from the larger solar panel was removed, increased power output to 0.83W-1.0W

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Validation - DCDC

05-2023

• During the test, the capacitor discharge circuit started smoking

• Once working, DCDC output max is 10.6-10.7V

6-2023

• Replaced R8 to 10k ohms resistor, but seems like the resistor removed was 10k

• Connected back to the power supply and load no change in output voltage

PD

04-07-2023

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Testing