Effecincy in i-v and p-v curves

hey guys i just wanted to ask u if any one could make the matlab simulink pv arrays i-v and p-v curves and getting a normal result after i needed to get some curves with some zigzags and drops and it's looks like a changing in efficency i accept any thx for u all and i will add a figure to describe what i mean

Answer 1

[Arnav]

Hi @Mohammed Alghamdi,

The non-ideal Power-Voltage curves obtained during actual experiments can be due to a variety of reasons. To name a few:

• Variation of irradiance throughout the duration of the day and the experiment. This could be due to cloud cover or weather.
• Variation of operating temperature of the PV array.
• Errors in Measurement devices.

Taking variation of irradiance over time for example, this could be modelled by taking irradiance as a function of time.

This is shown in the model below:

The MATLAB function block adds a sinusoidal noise.

The P-V plot we get is shown below:

Similarly, you can try to model other environmental factors to understand the effect on the P-V plots.

You can learn more about different parameters used in PV Array Block here:

https://www.mathworks.com/help/sps/powersys/ref/pvarray.html