To achieve optimal global power allocation for tractors and further improve system fuel economy,this paper designs an energy management strategy based on maximizing external energy efficiency for fuel cell/lithium battery/supercapacitor hybrid tractors.This strategy aims to reduce real-time hydrogen consumption of the system while maximizing external energy output to minimize the impact of load randomness on fuel cell output power.Under typical plowing conditions of tractors,simulation comparisons were made with the state machine strategy and the equivalent hydrogen consumption minimization strategy.The results showed that the proposed strategy meets the power requirements of the given plowing conditions and fully utilizes the performance characteristics of auxiliary energy compared to the two traditional strategy systems;Reduced the burden on fuel cells and improved their durability;The hydrogen consumption has been reduced by 11.03 g and 16.54 g respectively,improving the overall economy of the hybrid power system.
关键词
拖拉机/燃料电池/混合动力/外部能耗/能量管理
Key words
Tractor/Fuel cell/Hybrid power/External energy consumption/Energy management
维普
万方数据