Preliminary Study for the Design of Super Bidirectional Ćuk Converter For Greater Efficiency and Stability Of Power Conversion Under Unequal Supply Power And Consumption Power

Abstract

This paper presents a preliminary study that aims to integrate Supercapacitor technology with Conventional Bidirectional Ćuk Converter (CBCC) circuit topology, making Supercapacitor one of the main components in its electrical circuit. The purpose of integrating the two technologies is to increase the power conversion efficiency, increasing the stability of power flow against high voltage peaks that may result from very high-power supply sources, increasing power stability against current ripples, and against current shortages when the supply power drops due to exceeding its maximum power point. Therefore, this paper presents a preliminary study to design the Super Bidirectional Ćuk Converter (SBCC), where it is possible to take advantage of the low voltage and high currents that characterize Supercapacitor technology in order to give the Ćuk converter new properties. One of the most interesting of these properties is that the role of the converter becomes a contributor to energy storage and generation, in addition to being more efficient in converting it, and more stable especially with traditional and non-intelligent control laws. During this study, a simple conditional and combinatorial logic-based algorithm was designed to control the additional switches incorporated in the converter topology investigated in this work. The simulation results in the MATLAB environment have shown the capability of SBCC to increase the power transferred to the load when the maximum power point of the supply source is surpassed. The SBCC also has the ability to absorb high voltage peaks and ensure voltage stability when the supply power is significantly higher than the consumption power.