Application of wide range voltage input DC-DC converter for portable home appliance

In this study, the importance and performance of the Zeta Converter (ZK) with a wide input voltage range in maintaining the output voltage at the desired level were investigated. In the literature, there are few articles and theses on the theory and application of ZK. During the research conducted among these academic sources, errors were found in the mathematical equations and in the calculation of the ZK circuit component values. This thesis presents, for the first time in detail, both the mathematical theory and the application of ZK in the literature. A ZK simulation model with an input range of 5V–24V and a 12V output was proposed using the simulation feature of MATLAB. A Proportional-Integral (PI) control method was employed to keep the output voltage of the ZK stable at the desired level. The obtained output voltage was converted to 12V alternating voltage using the H-bridge inverter with the Sinusoidal Pulse-Width Modulation (SPWM) method, and the voltage level was increased to 220V using a single-phase transformer. Various simulation case studies were presented within the scope of the thesis, and the performance of the proposed ZK was evaluated based on the results of these studies.