The Research of Multi-port Energy Router Based on Cascade Architecture

As the types of energy are getting more plentiful and the scale of energy is increasing, the distributed energy access and consumption method represented by micro-grid is increasingly growing in voltage level. This article presents an idea of a multi-port energy router based on cascade framework in order to decrease the extra equipment input and redundancy brought by the voltage raising of micro-grid. The router is composed of multiple cascaded DC/DC transformers; it has one input port and numbers of output ports. The input end is facing to micro-grid system with high voltage level, the output end is facing to multiple load demands, and it will provide flexible power output in accordance with power demand of load sides. In addition, in order to realize the coordination control of different output ends, this article puts forward the method of distributed power control. This method could realize independent power control of each port, and receive coordination orders from dispatch center; Which could greatly increase the controllability of micro-grid. In the end, a three-port cascaded energy router that is built based on SIMULINK proves the feasibility of scenario presented in this article and the effectiveness of distributed control.