Unable to complete Power Systems Simulation Onramp section MPPT Model task 1 using Simulink Online/Simulink R2025b.

I am trying to complete the Power Systems Simulation Onramp section 4.3 MPPT Model task 1 in Simulink Online/Simulink R2025b by connecting the required signal to the signal assessment block. When I submit the task, it returns that the task is incorrect.

How can I get the task to pass?

Answer 1

[MathWorks Support Team]

The behavior witnessed is not the expected behavior of the Power Systems Simulation Onramp section 4.3 MPPT Model task 1 in Simulink Online/Simulink R2025b. The issue is due to the Specialized Power System blocks being changed to Simscape Electrical Blocks in the R2025b version of the onramp.

A workaround at this time is to revert the model back to the R2025a version, i.e. change the Simscape Electrical blocks back to Specialized Power System blocks. I have uploaded the R2025a version of the model as "mppt4_task1.slx". Please replace all block in the task, except the "Signal Assessment" block with the R2025a version and use the "sps_lib" function in the MATLAB command window to bring up the SPS blocks as needed.