Analysis and Design of Bi-directional SEPIC-ZETA Converter Using Adaptive Sliding Mode Approach

With the growing prevalence of diverse non-conventional energy sources integrated via micro-grid systems, a requisite battery storage solution is essential. Currently, both AC and DC micro grid systems utilize battery storage systems to achieve benefits such as the reduction of power fluctuations and provision of surplus or emergency power support. The regulated discharging and charging of the battery is essential in this application. The bi-directional SEPIC-ZETA DC-DC converter is utilized to enable charging and discharging operations through a sliding mode technique. Sliding mode control can manage significant non-linearities in systems and guarantees stability about load and source fluctuations. Despite their remarkable error reduction capabilities, these controllers exhibit minimal behavioural interaction with the features of the systems to which they are applied. This research examines the closed-loop regulation of battery charging and discharging via a SEPIC-ZETA converter utilizing sliding mode control (SMC). An actual study has been conducted with these controllers, and the outcomes are acknowledged to be significant and considerable, utilizing MATLAB as the testing platform.