氢能混动分布式热管理系统多热沉匹配与调控策略

The introduction of a large number of multi-electric devices in hydrogen hybrid airplanes leads to the problems of heat sink mismatch of insufficient heat sink in the climb condition and redundant heat sink in the cruise condition，making it hard to meet the cooling demand. To solve these thermal management problems，this paper carries out research on the multi-heat sink matching scheme and control strategy by modelling the distributed thermal management system of mainline airliner hydrogen hybrid power system. Firstly，according to the distributed thermal management system architecture，the solution for middle and final heat sink matching by increasing tank capacity is proposed. Secondly，a simulation model for the distributed thermal management system is established using MATLAB-Simulink software，and the relationship between the middle heat sink capacity and the maximum temperature of the fuel cell is analyzed. Finally，an on-off control strategy is designed based on the enlarged tank. The results show that the distributed thermal management system based on the proposed multi-heat sink matching scheme can meet the cooling demands of the hydrogen hybrid power system equipment by increasing tank capacity. The on-off control strategy can reduce the maximum power of the thermal management system by 16. 7%，the energy consumption during the flight profile by 55. 7%，and the fuel temperature by up to 4. 6 °C，as well as fuel compensation.