Dear Plexim Technical Support Team，
I have built a PLECS model of a three-phase four-stage cascaded power electronic transformer (PET) for hardware-in-the-loop (HIL) simulation. However, during offline simulation, the following error message frequently appears:
"Encountered 1001 consecutive zero-crossings caused by the components listed below.
Count : Component
1001 : ThreephaseDAB/RT-BOX/DAB11/Configurable Subsystem/Switched/IGBTD2
Consecutive zero-crossings slow down the simulation because they force the solver to make excessively small time steps.
To turn off this message, set the parameter “Max. number of consecutive zero-crossings” on the Diagnostics page of the Simulation Parameters dialog to 0."
How should I adjust my model?
I have another question: if I set the number of modules in the cascaded H-bridge module option to 4, how should I handle or adjust the DAB isolation stage to fulfill its original function?
The PET simulation model is shown below:
ThreephaseDAB.plecs (677.1 KB)