Hi all,

I am pretty new to PLECS. I am trying to simulate the bode plot for a converter and I have introduced a perturbation in the duty and am reading the output voltage perturbation. I have already gone through the example for the buck converter provided in the examples before doing this.

The simulation ends prematurely and plots the frequency response for a very short frequency range. It is unclear as to why this is happening. I asked it to plot the response from 100-100KHz and the following settings were applied:

Frequency Range: [100 100e+3]Amplitude: 1e-3Number of points: 150 <– Is this too high?Termination Tolerance: 1e-3 <– I don’t know what this is doingMax Number of Iterations: 400 <– Is this too high? I chose this arbitrarilyRel. Perturbation for Jacobian: 1e-4 <– No idea what this is…

I have attached the model for your reference. Any help would be greatly appreciated.

Thank you very much!

perturbation_test.plecs (29.7 KB)