I recently asked a question about my H bridge inverter that I modeled in Simscape and received a great answer. However, a day after I thought it was working I attached a load that has a higher iductance value than before. I am not sure if the output of the model is what I should be getting. I have attached four screenshots of the output and the model file. My questions are as follows:
1) In Current 1 I have the inverter attached to the load and in Current 2 I have an ideal voltage source attached and the inverter unattached to the load(which is just unattached to the circuit in the model file) and I do not understand why the current spikes up and then comes down to a steady state value after approximetly 1 second and why in Current 2 is begins right at the steady state value.
2) In Current 1 zoom I can see that the current begins at zero on the y-axis (this seems to be the case always) and in Current 2 zoom it begins at a value lower than zero. It almost appears that the current starts lower and then rises to its correct value when the ideal source is attached.
I am not sure if it has something to do with resonance between the capsitor on the output filter and the load inductance.
Any help would really be appreciated.