Riassunto analitico
This Thesis provides a set of tools useful for the preliminary sizing and selection of the electric powertrain package for two-wheeled vehicles in general and motorcycles in particular, as well as to present an overview of the possible methodologies that may be taken in order to make a reasonable evaluation in the preliminary stage of development.
The work commences by examining the current state of the art of the electric powertrain and propulsion systems, examining the different types of motor, controller, and energy storage devices available in the market. The inevitable development correlation between the powertrain package and the motorcycle as a whole is highlighted.
The first focus topic of the Thesis describes the construction of a simple set of tools that is useful for the preliminary sizing of the electric powertrain package of a motorcycle. The tools are developed based on the governing physical phenomena applicable to a motorcycle in longitudinal motion. The validation of the realism of the tools is performed with the aid of the technical specifications of real motorcycles already in the market.
The second focus topic of the Thesis elaborates on the development of the model of a full electric motorcycle. The model is intended to be a general analytical tool, integrating the mechanical, electrical, and control systems relevant to the preliminary evaluation of an electric powertrain package, with the motorcycle as a whole in consideration. In the course of the model construction, experimental activities are performed on a real powertrain package in a controlled test bench environment in collaboration with a motorcycle manufacturer. The data acquired through the experiments are then used to refine the model and its subsystems, in order to bridge the gap between the ideal analytical formulation and the non-ideal real-world behaviour of the electric powertrain package.
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