Design and Implementation of an Analog Controller Based on K-Factor Design Method for a Novel Isolated Z-Source DC-DC Converter with High Voltage Gain

Abstract

In this study, an analog controller design and implementation are performed by using the Kfactor design method for a novel isolated Z-source dc-dc converter with high voltage gain. The closed loop converter system created by the controller circuit ensures a constant output voltage at the converter output although there is a step change in input voltage and load within certain limits. The K-factor design method used to design the controller circuit allows obtaining the design of the feedback circuit with a certain flow of mathematical equations. The mathematical method used to calculate the controller circuit elements increases the reliability of the closed loop system. In this study, firstly, theoretical study of a closed loop control of a novel Z-source dc-dc converter topology is completed with K-factor design method. Secondly, the theoretical study results are analyzed by implementing a simulation study in PLECS. Lastly, by conducting an experimental study, simulation results and experimental results are compared. The results of the simulation study and experimental study demonstrates that the controller generated with the K-factor design method controls the output voltage. As a result, it has been demonstrated that a reliable control method is created for a new generation dc-dc converter with the K-factor design method.

Keywords

• k-factor
• dc-dc converter
• z-source
• analog controller