Design and Implementation of Gain Scheduling PI-Controller for DC-DC Boost Converter Control System

This paper provides design and implementation of a DC-DC boost converter control system by using gain scheduling PI-controller to achieve stable regulated output voltage with improved dynamic performance. The proposed controller parameters are obtained from system output response based on step input signal. A test step input is applied to the system and the three parameters of the plant are obtained from the corresponding response of the plant, which is independent to initial values of the system. Then the PI-controller is designed based on pole-placement method. For improving transient response and rise time of the converter, PI-controller parameters are continuously modified based on gain scheduling method. The efficacy of algorithms is verified through MATLAB simulation and finally, applied proposed algorithms into the DC-DC boost converter. Simulation results are presented to verify the effectiveness of the proposed DC-DC boost converter control system. Keyword: Boost Converter; Gain-Scheduling; Parameter Identification; PI-Controller; PWM Signal.