Joining two AC inputs with different voltages
You are paralleling two synchronous generators: as soon you connect them to a common AC network, they are phase-coupled, and this automatically means they have the same speed, too. Regardless of the wind speed. If the wind speed is lower at one turbine, that generator will work as a motor and make the turbine act as a fan.

So … don't do that. You have to use two separate inverters which can be coupled together so the DC voltages match.