VSC model
Hi, I want to create a VSC model (I'm a beginner), in the literature I found some schematics for which I have a question. Two photos of the models are attached. On one model, the reference voltage is positive and measured with negative, on the other it is the other way around. What it depends on? Later there are other signs on adders in front of the controller. For photo no. 1 I found the equation from which it results, but not for photo no. 2. I will be grateful for any help. Regards 
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Open Mar 05, 2021 - 04:56 PM
VSC Control IN D-Q frame, PSCAD
1answer
Voted Best Answer
Mar 06, 2021 - 01:24 AM
Hi there.
This difference depends only on the current mesuremet meters. In other words, if the current direction is taken as that the current flow from the DC to AC, you will take a positive sign and vice versa.
Regards
Hasan
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