| As the energy crisis and environmental pollution become increasingly prominent,the new smart grid technology based on renewable energy is gradually entering the stage of development.However,the penetration of new energy power generation into the distribution terminals increases the complexity of the power grid system.In order to alleviate this problem as much as possible and meet the requirements of energy transformation development,the concept of “Energy Internet”has been proposed for the first time.In this context,as the core equipment of Energy Internet,energy router also maintains a relatively good development trend.This paper mainly introduces the structure of a kind of multi-port energy router and proposes the mode switching strategy with advance compensation.Besides,it presents energy management strategy based on fuzzy control rules,designs and manufactures the hardware of the energy router.First of all,this paper expounds the overall topology of the energy router and gives a detailed description of each part of the topology.Secondly,it formulates control strategies for the corresponding ports of the energy router according to the four operating modes of the energy router and presents the mode switching strategy of the advance compensation scheme,realizing the seamless switching of energy routers in the island mode and grid-connected mode.Then,in order to realize the reasonable allocation of energy flow of each port of the energy router,it proposes a new type of fuzzy control strategy based on real-time electricity bills,which is different from the traditional droop control.Finally,it carries out experimental analysis and verification on the MATLAB simulation platform to improve the mode switching mechanism and the correctness and operability of the energy strategy.In addition,it designs and manufactures hardware circuit boards and verifies the concrete effects by experimental tests.The simulation results show that the energy management strategy based on fuzzy control can be used to improve the life of energy storage battery in the energy router,improve the economic benefit of power users and smooth the fluctuations caused by the renewable energy generation or load consumption. |
