Optimization of energy storage parameters of electric buses charged at terminal stops
Keywords:
traction drive, energy storage, electric bus, trolleybus, parameter optimization, objective functionAbstract
The paper developed a methodology for determining the optimal parameters of a combined energy storage for an electric bus based on solving a conditional minimization problem taking into account the driving mode, route parameters, and weight and size restrictions when charging the storage at the final stops of the route. The practical significance of the work lies in determining the parameters of combined energy storage for an electric bus using the example of a multi-component energy storage. Analysis of the results of the study on solving the optimization problem proved that for economical driving on routes 4 and 10, three-component storage with 1 branch with LTO cells and 28 branches with LFP cells and 1 branch of supercapacitors are optimal. For driving in intermediate and high-speed modes, two-component storage with the parameters: 2 branches with LTO cells and 15 branches with LFP cells and 1 branch with LTO cells and 47 branches with LFP cells, respectively, are optimal. For the obstacle mode, a storage device operating in the “high-speed” mode is sufficient for 10 routes, however, for the 4th route, which requires higher energy consumption, it is necessary to use a mono-component LFP - element storage device with 81 branches.
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