Cost Analysis Of Fuel Cell Plug-in Hybrid Electric Buses From Operators’ Perspective

Energy based hydrogen fuel cell plug-in hybrid electric vehicle(FCPHEV)equipped with large capacity power battery can overcome the mileage anxiety caused by long-distance travel,improve energy consumption economy and reduce exhaust emissions,which has become one of the important development directions of new energy vehicles.At present,in the field of urban bus,FCPHEV has been more and more applied.Therefore,it is great significance for urban bus operators to study the impact of battery configuration,energy management strategy,fuel cost,operating mileage,etc.on the cost of FCPHEV.Firstly,based on the MATLAB / Simulink simulation platform,this paper constructs the simulation model of the fuel cell plug-in city bus;Secondly,collecting the operation data of Xi’an city bus,using the principal component analysis,K-means clustering algorithm and other methods to build the typical operation conditions of Xi’an city bus,laying the foundation for the cost analysis of the fuel cell plug-in hybrid bus from the perspective of the operator.On the basis of the above research,this paper is based on the Charge Depleting Charge Sustaining(CD-CS)energy distribution strategy commonly used in fuel cell plug-in hybrid city bus,From the perspective of the whole life cycle,analyzed the influence of operating mileage,hydrogen energy price,battery configuration and purchase price changes on the comprehensive operating cost.The results show that the changes of hydrogen price,operating mileage,battery configuration and purchase price will have a significant impact on the operating energy consumption cost and life cycle comprehensive cost of hydrogen fuel cell city bus.Among them,the fluctuation of hydrogen price has the most significant impact on the cost in the whole life cycle;however,when the hydrogen price falls to a certain extent,the power configuration and purchase price of the power battery system will become the key factors of cost control in the whole life cycle,especially when the fuel cell system,driving motor and accessories are determined according to the characteristics of operating conditions,the best power battery distribution will appear,and the comprehensive cost of the whole vehicle life cycle will be the best.When the operating workload and power battery power distribution are constant,and the hydrogen price fluctuates in the range of 70 yuan/kg to 30 yuan/kg,the maximum reduction of the operating energy consumption cost in the whole life cycle is 52.95%;in addition,when the hydrogen price is 30 yuan/kg,the optimal power distribution of the power battery under the fixed operating mileage starts to change as the purchase price fluctuates.It can be seen that comprehensive consideration of the above factors will play a guiding role in optimizing the cost of deploying vehicles for operators.