Hi,
I encounter very strange simulation artefact, and I would be thankful if you could assist. I simulate a rectifier in a close loop.
In the rectifier I simulate, I have the overcurrent protection that enables/disables the full bridges, and I simulate two cases: (a) no overcurrent protection, and (b) with overcurrent protection. The strange part is that the ac grid currents are different and are very distorted when I simulate the circuit with the OC protection, even though the current does not reach the OC protection limit! Moreover, if the considered power block includes some logic, whose outputs are not connected to anything, the ac grid currents are also impacted!!!
Therefore, I think that it is a simulation artefact.
I am attaching to this thread a pdf file that shows the artefact. Unfortunately, I cannot upload the entire schematic as it includes more than 5 files, allowed by the forum rules; compressed file is also not allowed. However, I will be ready to send the compressed file with all the qsch and qsym files, if requested.
Thank you very much!
I
QSPICE_bug.pdf (489.2 KB)