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.

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yankang
yankang 2025-11-4，6:14
评论： Yifeng Tang 2025-11-5，18:27
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.
  1 个评论
Yifeng Tang
Yifeng Tang 28 minutes 前
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.

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