Warning: Singular matrix. Check node E5#BRANCH Fatal error: Timestep too small(1.25e-19) at t=0

2025-02-04 - Inverter modelling 2.qsch (108.7 KB)
Used to work and then I changed something and it stopped working

Here, you have two E sources in parallel so when you add resistor it works.

inve2.qsch (107.2 KB)

Best regards

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