This paper proposes a design method for a robust fractional-order PID (FOPID) controller for time-delay systems. A new Bode's ideal transfer function is introduced to tolerance the time-delay in loop.

Firstly, dynamic phasors, time delay and zero-order hold are embedded into the small-signal model at the same time, then the closed-loop transfer function of the droop-controlled inverter is built.

UIndy outfielder and Columbus North graduate Austin Bode runs out for the starting lineup intro in a game this season. Submitted photo Austin Bode had his best collegiate season this year. Bode, a ...