Emergency Energy Power System Composed of Multiple Multi-ports Energy Routers in Microgrid

The current emergency power supply measures are not perfect and standardized in response to large-scale power failures, such as city-wide ones. This thesis focuses on reasonably using the emergency electric power source to supply power in case of an abnormal urban power grid, to ensure the regular operation of urban electrical equipment and the daily life of the people.
The purpose of this study is to investigate potential emergency electric power sources and identify the most effective future emergency power distribution approaches, given their critical applications during power outages. Initially, a literature review is conducted to evaluate three common emergency electric power sources and two emergency distribution methods. Additionally, the feasibility of utilizing electric vehicle (EV) batteries for emergency energy supply (EES) and the energy router (ER) as an efficient distribution method is proposed. Building on this foundation, the study then delves into the relevant theories and techniques to ensure practical application. Specifically, the study introduces an ER composed of two power electronic converters: a bidirectional AC/DC converter and a partial power processing (PPP) based triple active bridge (TAB) converter. These components are detailed to demonstrate their reliability. Furthermore, an automatic power direction control strategy is proposed to facilitate efficient and consistent power transfer within the system, eliminating the need for manual adjustments, particularly during emergencies. Finally, by integrating multiple energy routers into an emergency power system within microgrids, the automatic power direction control method can be extended to manage power transfer not only between ports within a single energy router but also between different energy routers, enabling peer-to-peer (P2P) trading.