Book excerpt: High-Robust Control Schemes for Dual-Active-Bridge-Based DC-DC Converter Systems in Renewable Energy Applications is the first book that presents systematic control schemes for multiple DAB-based DC-DC converter systems. The book explores new control methods for various DAB DC-DC converters for high-power applications. These methods include fast-dynamic control, power balance control, soft start-up operation, hot-swap operation, and circuit-parameter estimation. Additionally, the book studies a DAB-based partial power processing DC-DC converter system designed to embed the renewable energy source and the energy storage system for boosting the utilization of components. The book also verifies the dynamic equivalence between the DAB converter and other intermediary inductive AC-link DC-DC converters, which can be helpful in designing control systems for other AC-link-based DC-DC converter systems. This book is a valuable reference for graduate students in electrical engineering, researchers, and power electronics engineers working in manufacturing, renewable energy, and utility industries. In addition, this book: Presents a systematic study of DAB-based converter systems; Highlights new control methods for DAB DC-DC converters for high-power applications; Examines embedding energy sources and storage systems to boost the utilization of renewable energy.