This study proposes a novel hybrid energy storage system (HESS) composed of a battery pack and a superconducting magnetic energy storage (SMES) for electric vehicle. Typically, the SMES has a higher power density and lower energy density than other energy storage devices, while battery has higher energy density. Thus, the overall HESS performance can be increased in power and energy density by combining SMES and batteries. The proposed HESS is designed based on bidirectional Z-source inverter (ZSI). Compared to other SMES/battery-based HESS topologies that are two stage designs (including DC/DC and AC/DC converters), in this topology, SMES and battery can be incorporated into the Z-source network which results in lower cost and improved HESS performance. Furthermore, the battery converter has been eliminated due to the buck/boost feature of the ZSI. The fuzzy control method and filters are used to distribute power between the SMES and battery. This study also describes the proposed HESS performance principles and its operation in different modes.
SMES/battery hybrid energy storage system based on bidirectional Z-source inverter for electric vehicles
IET Electrical Systems in Transportation ; 8 , 4 ; 215-220
2018-04-16
6 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
battery pack , electric vehicle , HESS topologies , AC/DC converters , DC/DC , lower energy density , supercapacitors , hybrid electric vehicles , superconducting magnetic energy storage , energy storage , secondary cells , bidirectional Z-source inverter , Z-source network , HESS performance principles , electric vehicles , battery powered vehicles , battery converter , novel hybrid energy storage system , DC-DC power convertors , invertors , energy storage devices , fuzzy control , AC-DC power convertors , higher power density , superconducting magnet energy storage , SMES/battery hybrid energy storage system
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