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Combined cycle gas turbine system optimization for extended range electric vehicles

机译：组合循环燃气轮机系统优化扩展范围电动车辆

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摘要

In order to meet the Corporate Average Fuel Economy standards for passenger vehicles in 2025, car manufacturers are exploring several alternative energy converters to replace the Internal Combustion Engine, which has demonstrated limited efficiency improvement. Recent studies explored the use of a Gas Turbine as the primary vehicle driver in a hybrid powertrain; however, none evaluated the implementation of a Combined Cycle Gas Turbine, which offers higher efficiency. This study presents a methodology for the design and optimization of the most optimal combined cycle system configuration, suitable to replace the engine in a series-hybrid extended range electric vehicle, and investigates its potential fuel savings. The two-steps methodology consists of conducting first an exergo-technological analysis using a Non-dominated Sorting Genetic Algorithm to identify the best suitable combined cycle configuration for integration in a series hybrid powertrain. Second, a series-hybrid extended range vehicle model is developed, to assess the consumption savings of the prioritized combined cycle on the Worldwide Harmonized Light Vehicle Test Cycle. The Reheat Gas Turbine combined to a Turbine Reheat Steam Rankine Cycle system is prioritized, for offering the highest efficiency and an acceptable vehicle integration complexity among the other investigated systems. Consumption results show fuel savings up to 23.6% with the prioritized system as compared to a reference extended-range electric vehicle equipped with an engine and savings up to 17% compared to other gas-turbine systems presented in the literature, depending on the battery size, the trip length, and the maximum turbine inlet temperature. Consequently, combined-cycle gas turbine systems present a serious alternative to replacing internal combustion engines on series hybrid electrified vehicles if the cost-effectiveness of these systems was proven.
机译：为了满足2025年乘用车的企业平均燃料经济性标准，汽车制造商正在探索几种替代能源转换器来取代内燃机，这表明了有限的效率改善。最近的研究探索了燃气轮机作为杂交动力系中的主要车辆驾驶员的使用;然而，无评估组合循环燃气轮机的实施，其提供更高的效率。本研究提出了一种设计和优化最佳组合循环系统配置的方法，适用于更换串联混合延伸范围电动车中的发动机，并调查其潜在的燃料节省。双步方法包括使用非主导排序遗传算法进行首先进行Exergo技术分析，以识别用于串联混合动力系集成的最佳合适的组合循环配置。其次，开发了一个系列混合延长范围车型，以评估全球统一轻型车辆测试周期的优先级组合周期的消耗量。重新加热燃气轮机组合到涡轮再加热蒸汽兰骏赛循环系统的优先考虑，用于提供最高效率和其他调查系统中可接受的车辆集成复杂性。与配备发动机的参考电动车辆相比，消费结果显示燃料节省高达23.6％，优先级系统相比，与文献中提供的其他燃气涡轮机系统相比，优先级系统相比，配备有发动机的引擎和节省高达17％，具体取决于电池尺寸，跳闸长度和最大涡轮机入口温度。因此，组合循环燃气涡轮机系统在证明这些系统的成本效益时，在串联混合动力电气化车辆上替换内燃机的严重替代方案。

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