Abstract
The interest in electric-powered transportation has been increased because of problems such as depletion of fossil fuel resources and environmental issues caused by internal combustion engines. The market for various kinds of small E-mobility devices (EMDs), such as electric vehicles (EVs), E-bikes, segways, and mini-boards has been growing rapidly. Of these, the distribution of the small electric vehicles called personal mobility devices (PMDs), which can address problems such as traffic issues and environmental pollution, is expected to gain momentum. However, unlike the widely used charging stations for EVs, charging systems for PMDs are insufficient. The large size of dedicated PMD charging adapters makes them inconvenient to transport. Therefore, to make PMDs more attractive, it is necessary to deploy charging stations that can charge all types of PMDs. The present study proposes a new charging system that can respond to the needs of PMDs having various voltages and implement low charging current ripple. The proposed multi-level charging system can share power by subdividing the power supply to handle the charging requirements of various PMDs. In order to verify the validity of the proposed charging system, we performed simulations and conducted experiments by building a prototype charging system.
Highlights
Because of problems such as depletion of fossil fuel resources and environmental issues, the conventional approach to transportation power has been shifting from internal combustion engines to electricity [1]–[3]
E-mobility charging systems, compact external adapters operating in a commercial power supply (220VAC) environment, must be designed to satisfy electrical appliance certification standards, such as electromagnetic interference (EMI) regulations, Power Factor Correction (PFC) regulations, and safety standards [7]–[9]
As confirmed in the waveforms of the simulation results, it can be verified that the voltage and output current ripple by pulsewidth modulation (PWM) of the multi-level charging system proposed in this paper decrease significantly compared to the conventional single buck converter
Summary
Because of problems such as depletion of fossil fuel resources and environmental issues, the conventional approach to transportation power has been shifting from internal combustion engines to electricity [1]–[3]. From a social aspect, it can serve the needs of the growth of one- and two-person households and the changing perception of transportation from ownership to use Because of these and other factors, even automobile manufacturers and automobile parts manufacturers are entering the PMD market, which is likely to. E-mobility charging systems, compact external adapters operating in a commercial power supply (220VAC) environment, must be designed to satisfy electrical appliance certification standards, such as electromagnetic interference (EMI) regulations, Power Factor Correction (PFC) regulations, and safety standards [7]–[9] Because of these requirements, it is inconvenient to carry such devices because of their volume and weight.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
