Error in N-channel IGBT simulating: Nonlinear solver to advance time one step failed to converge due to Linear Algebra error. Failed to solve using iteration matrix.

I want to use the nonideal model characteristics of the N-channel IGBT in Simscape to simulate junction temperature monitoring. Therefore, I built an inverter circuit based on the N-channel IGBT using components from the Simscape library.

However, when I use the N-channel IGBT from the Simscape Electrical library as the switching device in my inverter circuit, I keep encountering this issue: “ Nonlinear solver to advance time one step failed to converge due to Linear Algebra error. Failed to solve using iteration matrix.”

I have tried adjusting the solver, tuning the Solver Configuration, and grounding the model, but none of these attempts have worked.

This has been preventing me from running the simulation properly. I would like to ask: Is the N-channel IGBT in Simscape not suitable for inverter circuits, or have I made a mistake somewhere? Could someone with expertise please help me with this? Thank you.

[Yifeng Tang]

Electrical isn't my field, but the error message you got usually indicates an unphysical model topology, or unreasonable parametrizations. 99% of the time it's not the solver.