Modelling of hybrid Cuk converters using the methodology of voltage and current references

Abstract

This paper presents a methodology for obtaining the voltage and current references that permits the modelling of Hybrid Cuk (HC) Converters. The passive sign convention when system elements absorb energy is used to derive the differential equations governing the behaviour of the converter. This allows the explanation of the operation principle of the converter that is performed through the switching states. The behavior of the converter is studied by means of an energy interchange analysis between inductors and capacitors. After the deduction of the references and operating principle, the differential equations (DEs) that allow the modelling of the converter are deduced. Finally, a comparison between the mathematical model and the circuital representation of the converter is performed in OpenModelica for validation purposes. The simulations’ results allow to conclude that the obtained references and differential equations are coherent with the circuital implementation.

Keywords

• hybrid Cuk converters
• power electronics (PE) devices
• differential equations
• OpenModelica
• voltage and current references
• capacitor