This is an issue also with inverters using a temperature-dependent Pmax: the grid limitation is almost completely ineffective. Andre - despite the associated complexity of a feedback system, in my experience it is, in fact, how this works in reality. Grid controllers constantly check the combined output of all inverters at the injection point (or at an acceptable proxy point of the electrical circuit) and use it to calculate a power throttling coefficient that is sent out to inverters so that they can move off the maximum power point and reduce output. Sometimes this is done using just a subgroup of inverters instead of the entire array, if sufficient.
