Optimal design of energy management system for hybrid sightseeing-bus with fuel-cells and lithium-batteries
A power-following energy management strategies were proposed for fuel-cell(FC)sightseeing-bus with the power matching design and the simulation verification to reduce the endurance anxiety of traditional electric-vehicles.The output characteristics of pure lithium-battery(LI)sightseeing-bus,the pure fuel-cell sightseeing-bus(FC)and the hybrid(LI-FC)sightseeing-bus were compared.The results show that the climbing degree of the hybrid sightseeing bus is comparable to that of the pure electric vehicle;while the cruising range is increased by 15%compared with that of the pure lithium battery sightseeing-bus;and the equivalent hydrogen consumption is reduced by 53%compared with that of the pure lithium battery sightseeing-bus.The state of charge(SOC)of the power battery can keep stable working between 0.5 and 0.9,and the fuel cell will also switch stably under rated working conditions and idle working conditions.Therefore,the fuel cell and lithium cell hybrid sightseeing-bus(LI-FC)has the best endurance,better use economy and the best use stability among the three sightseeing-buses,and both the fuel cell and the power battery work stably under the expected working conditions,so having good competitiveness.
hybrid power vehiclespure lithium batteryfuel cell(FC)sightseeing busenergy managementmileage
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