Energy Management Strategy For Hybrid Energy Storage Applied In Tram Based On Fuzzy Logic Control

In recent years,the consumption of oil around the world are increasing obviously,urban environment problem is getting more attention.Tram with lithium battery and super capacitor as hybrid energy storage system is a solution to the problems caused by urban motor vehicles.The lithium battery has the characteristics of high energy density but low power density;the super capacitor has the characteristics of high power density but low energy density,because of the different properties of lithium battery and super capacitor,how to make the two kinds of energy storage component work together well,how to manage the energy stored in the two components is an urgent problem.So this paper puts forward a new energy management strategy for trams with hybrid energy storage system:use the PMP,for the purpose to reduce.the tram running costs,to guide the design of fuzzy logic control energy management strategy.To this end,this paper conducted the following research:(1)The main circuit of hybrid energy storage system is studied and analyzed.The main circuit topology of hybrid energy storage system are selected,and the configuration parameters of energy storage device of hybrid energy storage system are calculated;The bi-directional DC/DC converter are analyzed in modeling;The controller of the bi-directional DC/DC converter are designed and verified by simulation;Finally,the main circuit topology and the parameters of the experimental platform of trams with hybrid energy storage are designed and calculated.(2)Global optimal energy management calculation for trams with hybrid energy storage system.Use the PMP on the system modeling and calculation;Based on the parameters of Wuhan Donghu lines,use Matlab to get the optimal energy management calculation;Design the fuzzy logic controller using the experiences calculated from the result of the PMP.(3)The energy management strategy based on fuzzy logic control.Design the fuzzy logic controller using the experiences calculated from the third chapter;Using simulink to build the simulation of fuzzy logic control energy management strategy;Finally the simulation results and the results of the logic threshold energy management strategy are analyzed.(4)The experiment platform for trams with hybrid energy storage system.The fuzzy logic control energy management strategy was validated by the experiment.