When we were writing about problems with definitions last September (https://rtsunsw.home.blog/2019/09/26/definition-problems/), I honestly thought I would not have to revisit the issue of grid-forming and grid-feeding converters.
However, things have become worse as for some reason some part of the (non-power electronics) industry has started referring to grid-supporting, and in some occasions even grid-forming converters, as voltage source converters.
So here I go:
Voltage source converters (or VSCs) are converters where the DC side can be considered a constant voltage. There is no relation to how the converter is controlled on the AC side or what sort of functions it offers to the grid.
And it is not just me saying this. Here is a brief collection from power electronics textbooks that I could get my hands on relatively easily:
so in short
STOP USING THE TERM VOLTAGE SOURCE CONVERTER TO DESCRIBE SOMETHING THAT IS NOT …
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