A transformerless buck-boost converter with PID controller (closed loop controller)

A new technique of buck-boost converter with PID controller and its closed loop control technique are proposed in this study. The lower voltage gain in the existing converter is overcome by the newly proposed converter. The controller has better response compared to others. High voltage gain and positive output voltage are the main objective of this paper. The required duty cycle is achieved by the PID controller. This paper involves two strategies, as these switches conducts, the inductor is charged and as the diodes are forward biased, the capacitor is energized. Switches are excited using PWM technique. The modes of operation, simulation results, various analyses and experiments are presented in detail.