As renewable energyRenewable energy sources like wind and solar power continue to evolve, DC power systems are emerging as key players in the efficient management and dissemination of these sustainable resources. This has propelled the exploration of DC-DC converters over recent years. Among various dc-dc converters, the dual-active-bridge (DAB) dc-dc converter is regarded as one of the most promising candidates for the dc power conversion due to merits like isolated, high-efficiency, bidirectional, and ultrafast dynamic characteristics. Beyond the DAB converterDAB converter, other isolated DC-DC converters, such as the full bridge and three-phase DAB convertersDAB converter, share similar dynamic properties due to their intermediary inductive AC-linkIntermediary inductive ac-link converters (I2ACL) setup. However, they are rarely investigated in existing literature, especially for better dynamic control performance. Besides, while the single DAB dc-dc converter has been extensively investigated, its modularized converter systems such as input-parallel output-parallel (IPOPIPOP), input-independent output-parallel (IIOPIIOP), in-put-parallel output-series (IPOSIPOS), and input-series output-parallel (ISOPISOP) configurations have been seldomly covered in the existing research. Particularly, it is emergent to improve the dynamics, e.g. the input-voltage disturbance, the load-condition change and the power sharing disturbance. In addition, this work expands the scope of the application of the DAB-based converter system in partial power processing (PP, which can realize the independent control of the renewable energyRenewable energy source and the stabilization of the total dc bus. Combining with DAB module, the DAB-based PPP converter systemDAB-based PPP converter system is presented, and the corresponding control scheme is proposed.