For offshore wind farms, typically only very long export cables are HVDC, or long interconnector cables. Inter-array and export cables up to around 100km or so are AC.
Those two examples are rather small. Not even at the level of supergrid interconnectors proposed, or built elsewhere.
Technology improves and its availability and costs change.
In this case https://en.wikipedia.org/wiki/Insulated-gate_bipolar_transis... which appear everywhere from induction cooking fields/plates in household appliances to power electronics in electric cars and locomotives, upwards to so called smart- or super-grids(in their endpoints/substations). I'm sure there are even more applications of the enabling IGBTs which I'm unaware of.
