Instantaneous Pulse Pattern Control for Optimized Dynamic Performance of Three-Phase Dual-Active Bridge Converter

The three-phase dual-active bridge (DAB3) converter is an isolated bidirectional dc-dc converter used in high-power dc microgrid. Without fast dynamic control of the DAB3, the required dc-link capacitance to maintain dc voltage of microgrid under transient conditions increases, resulting in a higher risk of excessive current of short-circuit accidents. Consequently, dynamic control methods for the DAB3 have been extensively studied, leading to the development of the state-of-the-art generalized instantaneous flux and current control (GIFCC). The GIFCC dynamically regulates the phase current and magnetizing flux-linkage of the transformer under both single phase-shift (SPS) and triple phase-shift (TPS) modulations. However, it applies different control laws depending on the transition type, leading to degradation of dynamic performance and complicating integration with outer-loop power or…