A Zero Current Ripple Bidirectional DC-DC Converter with High Voltage Gain and Common Ground for Hybrid Energy Storage System EVs

In this paper, a novel nonisolated bidirectional dc-dc converter (BDC) consisting of a quadratic voltage cell, a switched-capacitor(SC) cell and a zero current ripple cell has been proposed for hybrid energy storage system (HESS) in electric vehicles. The converter presented combines the advantages...

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Bibliographic Details
Published in:IEEE journal of emerging and selected topics in power electronics 2023-10, Vol.11 (5), p.1-1
Main Authors: Jiang, Feng, Wang, Ping, Wang, Zhishuang, Deng, Qingyu, Li, Bo, Tao, Long, Cheng, Ze
Format: Article
Language:English
Subjects:
bidirectional dc-dc converter(BDC)
Capacitors
Efficiency
Electric vehicles
electric vehicles(EVs)
Energy storage
high voltage gain
High voltages
High-voltage techniques
hybrid energy storage system(HESS)
Hybrid systems
Inductors
Low voltage
Ripples
Stress
Switches
Topology
Voltage
Voltage converters (DC to DC)
Voltage gain
wide voltage gain range
zero ripple current
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Summary:In this paper, a novel nonisolated bidirectional dc-dc converter (BDC) consisting of a quadratic voltage cell, a switched-capacitor(SC) cell and a zero current ripple cell has been proposed for hybrid energy storage system (HESS) in electric vehicles. The converter presented combines the advantages of high voltage gain, wide voltage gain range, a low voltage stress across power switches, zero current ripple and common ground between both sides. Besides, synchronous rectification technology is applied to achieve higher efficiency of the converter. A comprehensive analysis of the operation principle, the characteristics analysis and efficiency analysis of the converter in a continuous conduction mode are presented in detail. This paper also develop a 1 kW scaled-down prototype, which validates the effectiveness and feasibility of the proposed BDC. The maximum efficiency of the converter under full load is 95.09% in the step-up mode and 95.24% in the step-down mode.
ISSN:2168-6777
2168-6785
DOI:10.1109/JESTPE.2023.3304364