Why the power of PV arrays gives low values? Simscape system

Hello,

I have used 45 panels of PV to operate electrolyzer. The panels are distributed as 8 panels in parrallel and 5 panels in series. The output of the panel is 0.025 KWh? why? While we I opened Simscape results, I got different results?, can anyone help me?

My system is attached for consideration, please help

Answer 1

[Vinay]

Hi @Ahmed Abdel Salam,

The array is configured as an 8x5 grid, but the irradiance for cells (1,1) and (1,2) is not properly connected to the input. This disconnection is causing a lower current in that branch, which causes the lower power at the output.

The irradiance is a repeating sequence that varies from 130 W/m^2 to 180 W/m^2, causing the power values to fluctuate between 22W and 32W. This issue can be resolved by using a constant value of irradiance to the PV panel to make the constant value of the power at the output.

Kindly refer to the below documentation of ‘Solar Cell’ for more details:

https://in.mathworks.com/help/sps/ref/solarcell.html

[Ahmed Abdel Salam]

Hi @Vinay

Many thanks for your help. I connected the irradiance for the mentioned solar panels. Yes I have to use repeating sequence to stimulate a real irradiance of specific location. constant block will be not real for simulation.

Addition question please, the system is producing hydrogen in seconds, which is not real at all, I need to delay the hydrogen production or at least the count of hydrogen capacity to 15 mins, what block should be used? I tried to use discrete time integrator "gain value" different than 1. Is there any option to make the electrolyzer produces hydrogen per 15 mins?