Sculpting the dynamic response of PWM dc-dc converters in an arbitrary shape using WPI control technique

Abstract

Weighted proportional integral (WPI) control method is introduced for pulse-width-modulated (PWM) dc-dc converters. Although WPI control is computationally similar to the conventional PI control, it offers direct step response assignment, which allows the designer to satisfy any desired design specification. The WPI control method is explained for a PWM dc-dc converter of an arbitrary order, n, and numerical simulations are presented to compare the performance indices of the proposed control method with those of the conventional PI controllers.