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Missing scaling in inverter LCL filter model #414

@Lukeianb98

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@Lukeianb98

Hi,
I believe there may be an error in the modelling of the LCL filter for inverters.
In particular, it seems to me that the omega_b/l and omega_b/c scaling is missing from the differential equations.
The following image is from the documentation -> CIG Component Library -> Filter with the aforementioned scaling highlighted in yellow:

Image

while the following is from src -> models -> inverter_models -> filter_models.jl:

Image

Apologies if I am missing something. I have spent some time looking through other folders and files but have not found anything indicating otherwise.
Also, thanks for creating and maintaining this project! I have found it to be very useful so far.

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