Design and Control of Bidirectional Converters for DC Microgrids

Abstract: This study aims to summarize the design of two common types of bidirectional DC-DC convertersfound in microgrids, as well as use two distinct control methods for each converter and validate theirperformance. Microgrids are decentralized, small-scale power systems that can operateindependently of the main power grid and are an important solution in order to integrate moreintermittent energy sources, such as solar and wind power, into the energy mix. The study focuses onanalyzing the voltage reference tracking capabilities and adaptability to load changes of thebidirectional boost converter and the Dual Active Bridge Converter. The methodology used includescomponent selection, controller design, and verification. The results indicate positive performancefor both controllers. Finally, the study verifies the controllers’ ability to handle load changes andmaintain voltage reference and discusses the potential benefits and drawbacks of the controlmethods used for each converter.