How to set my simulation powergui into continuous mode?

My LLC converter simulation is running well when set the powerGUI into discrete mode but have error when shift it into continous mode.

The error is:

An error occurred while running the simulation and the simulation was terminated

Caused by:

• Derivative of state '1' in block 'LLC_DualCtrl/powergui/EquivalentModel1/State-Space' at time 0.013000000000000001 is not finite. The simulation will be stopped. There may be a singularity in the solution. If not, try reducing the step size (either by reducing the fixed step size or by tightening the error tolerances)

How to fix this error, the input voltage seems be infinite.

Answer 1

[Arun]

Hi Boheng Zhao,

I understand that you encounter an error while running the simulation with “powerGUI” block in continuous mode.

As a work-around to successfully run the shared model in MATLAB R2023b please change the following Configuration Parameters:

1. Under the Modeling tab, open “Model Settings’ (Ctrl +E). This will open the “Configuration Parameters” window.
2. Select ‘Solver’ from the list on the left, then change Solver selection Type to ‘Variable-step’
3. In the same section, under Solver details, change Zero-crossing options to “Disable All”.

For more information, please refer the shared MathWorks documentation links:

1. “powergui” block: https://www.mathworks.com/help/sps/powersys/ref/powergui.html
2. Zero-Crossing Detection: https://www.mathworks.com/help/simulink/ug/zero-crossing-detection.html

I hope this helps!

[Boheng Zhao]

Thank you Arun, That's so helpful!