Comparison Analysis of Charging System Designs for Battery Electric Bus
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2024-06-01
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Edition:Final Report 3/1/2023 – 6/30/2024
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Abstract:Battery electric buses (BEBs) face the challenge of having a shorter range compared to diesel-powered buses. This research aims to compare different charging system designs of BEBs considering economic and environmental impacts. Case study was conducted for the potential BEB fleet based on Wayne Garage of NJ Transit having long and interstate routes. First, this study modeled power consumption for BEB trips using field operation data collected in Camden, NJ. The model was then applied to GTFS schedule data to simulate and estimate power consumption of BEB. The charging system to maintain transit service level in a hypothetical worst-case scenario was designed for four scenarios: 1) increasing fleet size, 2) opportunity charging with fast plug-in charger, 3) opportunity charging with Inductive Power Transfer (IPT), and 4) opportunity charging with pantograph charger. Life Cycle Cost Analysis (LCCA) was performed to calculate the initial investment and cumulative net present value for each scenario. Then, Life Cycle Assessment (LCA) was performed to evaluate cumulative energy demand and global warming impacts. The overall results show that the fast plug-in opportunity charging is the most cost-effective and environment friendly solution.
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