LAUSR

This article presents a hybrid ac/dc system constructed by multiport energy routers (MERs), which have potential application prospects in future energy Internet. Two typical types of MER in the system are studied, and the selected main circuits are easy to realize multiple forms of power supply with high reliability, plug-and-play access of distributed generations, and high expansibility of power ports. The corresponding control and protection systems are developed to ensure the regular operation of MERs, and a smart energy management scheme is presented for the power flow management of MERs to meet the expectations of power consumers. Two MER prototypes are implemented, of which the experimental results validate the correctness of parameter design and the effectiveness of the control and energy management strategies, showing the satisfactory performance of MERs.