Review of Energy Saving Technologies for Urban Rail Vehicles
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Abstract
Urban rail transit systems have substantial power demands, with traction power alone constituting about 50% of the system's electrical consumption. As the operational mileage and number of vehicles increase, so does the energy consumption, underscoring the paramount importance of energy-efficient vehicles. This study systematically analyzes the energy transfer and the dissipation in urban rail transit vehicles. It delves into the potential energy-saving impacts of various strategies and technologies, including vehicle lightweighting, permanent magnet motor traction, silicon carbide applications, regenerative braking energy storage, efficiency enhancement of auxiliary inverters, variable-frequency drive air conditioning, and intelligent lighting systems. By elucidating these methods, this study offers potent strategies to curtail the urban rail transit vehicle energy consumption, thereby bolstering the overall competitiveness of urban rail transit systems.
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References
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