Decoupling voltage controller design with time response specifications for three-phase DC/AC inverter

This paper presents the design controller satisfied with time specification by user for three-phase DC/AC inverter. To design the controller, a pole placement method and CRA (characteristic ratio assignment) method are used. Until now, the relationship between the characteristic function and the time response has been analyzed in only low order system less than second. Eventually, pole placement method is based on response of second order system. So it is hard to get the good result because it has two fixed pole. However CRA method can find controller gains though characteristic equation is high order. That controller satisfies time response specification. This paper shows the way to decide overshoot and settling time. Finally, the performance of this proposed algorithm is verified through PSiM simulation.