Study and Comparative Analysis on Fractional Order PID Controlled Buck Converter

The non-linear nature of power converters makes them challenging to manage, thus the search for smart and effective controllers is continuing. In recent years, Fractional Order controllers have shown excellent performances in power electronic systems. This article describes the design and operations of a Fractional Order Proportional Integral Derivative (FOPID) controller to control the output voltages of a Buck Converter. The “MATLAB Simulink Design” simulation tools are used here to simulate the operations of controlling. Pulse Width Modulation (PWM DC-DC) is used as a switch with a frequency of 5 kHz. To understand the performance of the FOPID controller more efficiently we compare the output of this controller with the commonly used PID, PI, and PD converter. The result shows FOPID controller responds more rapidly and accurately than other controllers in terms of controlling the output voltages of the converter.