I am simulating an ANPC inverter Modell. But an error occurs, said "Inconsistent source conditions after switching.", shown in the photo. It is interesting when I tried to reduce the switching frequency to 500Hz, the circuit works well. Or when I keep the switching frequency to 1000Hz, but change the amplitude from 1 to 0.99, the circuit works too. So what is the exact error for this circuit?Since I must set the switching frequency to more than 10kHz and amplitude firstly keeps 1 for a bench test, what should I do to make this circuit work?
Thanks for your help and the model is attached.