PV MPPT FLC using Boost DC-DC Converter
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I am simulating a solar panel system using MPPT FLC. I want to ask why most of the models I refer to on the internet use a 20 ohm load for this method.
In reality, when I try to change to any other arbitrary load, the simulation graph shows very strong oscillations and is not optimal.
And the optimal load for a 213.15W panel is 3.95 ohms, from what I know.
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1704096/image.png)
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Joel Van Sickel
on 28 May 2024
Can you share your model? Is this a shipping example or something off of file exchange or a model that you built yourself? The whole point of MPPT is that it should work across a variety of loads. That is actually the whole point of it. For different loads and different irradiances, you need to be able to adjust the system to extrac the maximum power. However, there is also not an ideal resistance, as you stated, when using MPPT, because MPPT can adjust the output voltage to draw the appropriate current from the solar panel. So for a 4 ohm load compared to a 20 ohm load, MPPT should drop the voltage by a factor of 5 to keep the current out of the solar cell the same. It sounds like potentially the closed loop isn't tuned well for a large change in load current.
More Answers (1)
Salvador Shinji
on 12 Jul 2024
Hello, First of I want to say I really liked your model, and second I was wondering if you could help me with a couple of questions.
In your MPPT algortih, Why do you multiply your E by 1/100000 and CE by 1/1000 and also the output by 1/10?
Do you have any paper can I citate ?
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