I'm working on how to develop a Self Tuning(ST) adaptive controller of an inverter in a grid tied microgrid. The paper i'm trying to advance on uses two ST and two PI controllers. However, recent studies have indicated the limitations of PI controllers when applied to dynamic systems. For instance, PI controllers are unable to give optimal performance when the system operating conditions change. How such restrictions can be overcome using an adaptive self-tuning controller instead of a PI controller is investigated in this paper. I want to make all my four controllers to be ST controllers.
Any advice for me?
Hello, Mubashir.
Yes. A properly designed STC is expected to perform better than PI controller with fixed parameters, since the STC has the the leverage to select alternative parameter until a suitable selection is made.
However, the STC is computationally more expensive and there is no guarantee that all the parameters selected during the online process of tuning will perform better.
It is advisable to design the STC and select the best parameters for offline implementation on your dynamic system.
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