Overview of Control Strategies and Design of Isolated Bidirectional Dual Active Bridge Converter for Renewable Energy Systems

The dual active bridge converter (DAB) is one of the recent topologies for isolated dc–dc converters. The isolation provided by the DAB converter is among the essential features used for renewable energy applications as it dissociates the grounds of source and load, enhancing the safety and protection of the renewable energy installation. In recent years, substantial investigations have been reported to discuss the technical challenges accompanying the DAB converter’s modulations and controls for renewable energy systems. This chapter presents the overview of control methods and parameter designing of the DAB power converter, applicable in the renewable energy system. The control algorithm and DAB parameter design considered renewable energy sources like PV, subsequently providing efficient power handling and voltage regulation. A brief overview of various control schemes is presented in this chapter, which is broadly classified into three categories. The renewable energy systems suffer from frequent voltage change; thereby, the control method plays a vital role in providing a satisfactory output. The direct power control strategy for DAB is proposed and discussed in this chapter to provide a fast transient response, stable steady-state response and improved voltage regulation. The performance of the suggested controller algorithm is evaluated in MATLAB/Simulink, and the outcomes demonstrate the suggested control method's effectiveness.