Design and Research of Electric Energy Router Based on Double Sliding Mode Control

Abstract

With the continuous popularization of the concept of the energy internet, the electric energy router, as a key device in the energy internet, has become a research hotspot. The research has designed an electric energy router with a DC bus structure, which is under the double sliding mode control of outer loop voltage and inner loop current. It is verified by PLECS simulation and comparative analysis of Buck circuit PID control and sliding mode control. Design the overall circuit, verify the feasibility of its structure through simulation, and analyze its working status in grid-connected and island mode. The results show that the power router of this architecture can automatically switch the operation mode, realize the free conversion of "source-network-charge-storage", and solve congestion and faults. Through the comparative analysis of PID and sliding mode control, it can be seen that the dual sliding mode control is more advantageous in terms of dynamic characteristics and response speed. The use of dual sliding mode control is simple to implement, which has better error adjustment characteristics and strong robustness, and the addition of distributed power generation can reduce environmental pollution.