Performance comparison of a thermoelectric generator applied in conventional vehicles and extended-range electric vehicles
Performance comparison of a thermoelectric generator applied in conventional vehicles and extended-range electric vehicles
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DOI：
10.1016/j.enconman.2022.115791
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发表时间：
2022-08
影响因子：
10.4
通讯作者：
S. Lan;R. Stobart;Rui Chen
中科院分区：
文献类型：
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作者：
S. Lan;R. Stobart;Rui Chen
混合动力汽车是全球从传统化石燃料汽车向电动汽车转型的重要阶段。热电发电机作为一种很有前途的余热回收系统，也需要从传统汽车向混合动力汽车过渡实施。本文采用仿真和实验相结合的方法，对同一台热电发电机样机在常规汽车和增程电动汽车上的性能进行了比较。分析了功率管理策略、驱动周期和辅助功率对热电发电机提高燃油经济性的影响。结果表明，在城市行驶循环中，采用功率跟随器控制策略的热电发电机应用于增程电动汽车中，比集成到传统汽车中具有更好的燃油经济性。然而，在公路行驶循环中，集成在常规车辆中的热电发电机的节油效果更好。研究还表明，功率跟随器控制策略比恒温器控制策略更适合于增程电动汽车中温差发电机的集成。研究发现，驱动循环和辅助功率只影响和制约传统汽车用温差发电机燃油经济性的提高，而对其在加长续航电动汽车上的应用影响不大。
Hybrid electric vehicles constitute an important stage in the global paradigm shift from conventional fossil-fuelled vehicles to electric vehicles. Thermoelectric generators, as a promising waste heat recovery system, also need to transfer their implementation from conventional vehicles to hybrid electric vehicles. In this paper, a performance comparison of the same thermoelectric generator prototype applied in a conventional vehicle and an extended-range electric vehicle is conducted through both simulation and experimental methods. The effects of power management strategies, driving cycles and auxiliary power on the fuel economy improvement due to thermoelectric generators are analysed. The results indicate that in an urban driving cycle thermoelectric generator applied in the extended-range electric vehicle using the power follower control strategy shows better fuel economy than with integration into the conventional vehicle. However, in a highway driving cycle, the fuel saving effect of the thermoelectric generator integrated in the conventional vehicle is better. It is also shown that the power follower control strategy is more suitable than the thermostat control strategy for the integration of thermoelectric generators in extended-range electric vehicles. It is observed that driving cycle and auxiliary power only influence and restrict the fuel economy improvement of thermoelectric generators applied in conventional vehicles and have little effect on their application to extended-range electric vehicles.