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Feasibility study of a diesel-powered hybrid DMU
Railway Engineering Science Pub Date : 2021-06-11 , DOI: 10.1007/s40534-021-00241-2
Matteo Magelli , Giuseppe Boccardo , Nicola Bosso , Nicolò Zampieri , Pierangelo Farina , Andrea Tosetto , Francesco Mocera , Aurelio Somà

Nowadays, the interest in hybrid vehicles is constantly increasing, not only in the automotive sector, but also in other transportation systems, to reduce pollution and emissions and to improve the overall efficiency of the vehicles. Although railway vehicles are typically the most eco-friendly transportation system, since commonly their primary energy source is electricity, they can still gain benefits from hybrid technologies, as many lines worldwide are not electrified. In fact, hybrid solutions allow ICE-powered (internal combustion engine) railway vehicles, such as diesel multiple units (DMUs), to operate in full-electric mode even when the track lacks electrification. The possibility to switch to full electric mode is of paramount importance when the vehicle runs on urban or underground track sections, where low or zero emission levels are required. We conduct the feasibility study of hybridization of an existing DMU vehicle, designed by Blue Engineering S.r.l., running on the Aosta–Torino Italian railway line, which includes a non-electrified urban track section and an electrified underground section. The hybridization is obtained by replacing one of the diesel generators installed on the original vehicle with a battery pack, which ensures the vehicle to operate in full-electric mode to complete its mission profile. The hybridization is also exploited to implement a regenerative braking strategy, which allows an increase in the energetical efficiency of the vehicle up to 18%. This work shows the sizing of the battery pack based on dynamic simulations performed on the Turin underground track section, and the results demonstrate the feasibility of the hybridization process.



中文翻译:

柴油动力混合动力DMU的可行性研究

如今,人们对混合动力汽车的兴趣不断增加,不仅在汽车领域,而且在其他交通系统中,以减少污染和排放并提高车辆的整体效率。尽管铁路车辆通常是最环保的运输系统,因为它们的主要能源通常是电力,但它们仍然可以从混合技术中受益,因为世界上许多线路都没有电气化。事实上,混合动力解决方案允许 ICE 动力(内燃机)铁路车辆,例如柴油动车组 (DMU),即使在轨道缺乏电气化时也能以全电动模式运行。当车辆在城市或地下轨道路段行驶时,切换到全电动模式的可能性至关重要,需要低或零排放水平的地方。我们对由 Blue Engineering Srl 设计的现有 DMU 车辆的混合动力进行可行性研究,该车辆在意大利奥斯塔-都灵铁路线上运行,其中包括非电气化城市轨道段和电气化地下段。混合动力是通过用电池组替换安装在原始车辆上的一台柴油发电机来实现的,从而确保车辆在全电动模式下运行以完成其任务配置文件。混合动力还用于实施再生制动策略,使车辆的能量效率提高高达 18%。这项工作显示了基于在都灵地下轨道部分进行的动态模拟的电池组尺寸,

更新日期:2021-06-11
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