Solar Panel I-V Curve

To see all our tests please download our document located in the document section

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Test 4: To characterize the I-V curve of our 25 Watt solar panel

Goal: To determine load required for max power

Parts used: 25 watt solar cell, 100 watt potentiometer 500 ohm, Fluke 115 multimeter

Image to the right shows the setup used for this test.

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Following image shows the testing environment. Note: the leaves were not an issue with direct sunlight. Temperature was 70 F, and humidity was 55%.

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Table below shows the resulting I-V curve based on different loads. The maximum power is achieved at around 20 ohms, which gave us the load resistance for our maximum power circuit. 

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