Design of Advanced Control of Flyback Converter using Lyapunov-based Feedback Linearization and Backstepping Controller for Improved Voltage

Abstract

Machine Modern power system require the high voltage and minimum transmission losses to ensured stable and efficient power delivery while AC system suffer from frequency mismatch and reactive power issues. However, DC systems still face problems like voltage drops and power mismatches at the load side, mainly due to nonlinear switching in converters. Isolated DC–DC converters, such as flyback converters, are widely used for safety, but controlling them is complex. To address these challenges, this work proposes a Lyapunov stability analysis-based Feedback Linearization and Backstepping Controller (FBBSC). It handled the nonlinear system into a linerar one for easier control . MATLAB simulation is used to compare the response of the proportional integral (PI), feedback (FB), and FBBCS controllers in terms of input voltage, input current, output current, and output voltage.Compared to conventional controllers the FBBSC illustrated the superior performances. The controller achieved the faster response with reduction time in 1.5 ms. Therefore the proposed FBBSC ensures better rise time, settling time and peakovershoot responses.This improvement in energy storage , electric vehilces where speed and accurate voltage regulation is essential for maintaining system performances.