Bus-to-Route and Route-to-Bus Approaches in Hybrid Electric Buses Fleet for Li-ion Battery Lifetime Extension
DOI:
https://doi.org/10.47187/perspectivas.vol1iss2.pp15-22.2019Keywords:
Fleet energy management, Battery state of health, Dynamic programming, Hybrid electric bus, Li-ion batteryAbstract
This paper aims to propose a methodology for managing Li-ion battery life for a whole fleet, focusing on improving the total operating costs for hybrid electric buses. This problem is approached in two different ways: bus-to-route and route-to-bus. Bus-to-route optimization focuses on developing an energy management strategy for each bus in the fleet. A techno-economic, energy and battery aging analysis of the fleet was carried out. As per the outcomes of this analysis, buses were grouped according to the state of health of the battery of each bus. Based on this analysis and classification, the route-to-bus approach was applied. This technique involves a re-evaluation of the energy management system and a re-organization of the buses according to the state of health of the battery of each bus. Increases in battery (BT) life of up to 10.7% were obtained using the proposed approach.
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Copyright (c) 2019 Jon Ander López Ibarra, Aitor Milo, Haizea Gaztañaga, Victor Isaac Herrera Perez, Haritza Camblong
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