Design and Control of a 3 kW Wireless Power Transfer System for Electric Vehicles

This paper aims to study a 3 kW wireless power transfer system for electric vehicles. First, the LCL-LCL topology and LC-LC series topology are analyzed, and their transfer efficiencies under the same transfer power are compared. The LC-LC series topology is validated to be more efficient than the L...

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Main Authors: Zhenshi Wang, Xuezhe Wei, Haifeng Dai
Format: Article
Language:English
Published: MDPI AG 2015-12-01
Series:Energies
Subjects:
Online Access:http://www.mdpi.com/1996-1073/9/1/10
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author Zhenshi Wang
Xuezhe Wei
Haifeng Dai
author_facet Zhenshi Wang
Xuezhe Wei
Haifeng Dai
author_sort Zhenshi Wang
collection DOAJ
description This paper aims to study a 3 kW wireless power transfer system for electric vehicles. First, the LCL-LCL topology and LC-LC series topology are analyzed, and their transfer efficiencies under the same transfer power are compared. The LC-LC series topology is validated to be more efficient than the LCL-LCL topology and thus is more suitable for the system design. Then a novel q-Zsource-based online power regulation method which employs a unique impedance network (two pairs of inductors and capacitors) to couple the cascaded H Bridge to the power source is proposed. By controlling the shoot-through state of the H Bridge, the charging current can be adjusted, and hence, transfer power. Finally, a prototype is implemented, which can transfer 3 kW wirelessly with ~95% efficiency over a 20 cm transfer distance.
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spelling doaj.art-f6f7462f8ec740fba61490b0e2e056e12022-12-22T04:24:12ZengMDPI AGEnergies1996-10732015-12-01911010.3390/en9010010en9010010Design and Control of a 3 kW Wireless Power Transfer System for Electric VehiclesZhenshi Wang0Xuezhe Wei1Haifeng Dai2Clean Energy Automotive Engineering Center, Tongji University, No. 4800, Caoan Road, Shanghai 201804, ChinaSchool of Automotive Studies, Tongji University, No. 4800, Caoan Road, Shanghai 201804, ChinaClean Energy Automotive Engineering Center, Tongji University, No. 4800, Caoan Road, Shanghai 201804, ChinaThis paper aims to study a 3 kW wireless power transfer system for electric vehicles. First, the LCL-LCL topology and LC-LC series topology are analyzed, and their transfer efficiencies under the same transfer power are compared. The LC-LC series topology is validated to be more efficient than the LCL-LCL topology and thus is more suitable for the system design. Then a novel q-Zsource-based online power regulation method which employs a unique impedance network (two pairs of inductors and capacitors) to couple the cascaded H Bridge to the power source is proposed. By controlling the shoot-through state of the H Bridge, the charging current can be adjusted, and hence, transfer power. Finally, a prototype is implemented, which can transfer 3 kW wirelessly with ~95% efficiency over a 20 cm transfer distance.http://www.mdpi.com/1996-1073/9/1/10wireless power transfer (WPT)topology analysispower regulationelectric vehicle
spellingShingle Zhenshi Wang
Xuezhe Wei
Haifeng Dai
Design and Control of a 3 kW Wireless Power Transfer System for Electric Vehicles
Energies
wireless power transfer (WPT)
topology analysis
power regulation
electric vehicle
title Design and Control of a 3 kW Wireless Power Transfer System for Electric Vehicles
title_full Design and Control of a 3 kW Wireless Power Transfer System for Electric Vehicles
title_fullStr Design and Control of a 3 kW Wireless Power Transfer System for Electric Vehicles
title_full_unstemmed Design and Control of a 3 kW Wireless Power Transfer System for Electric Vehicles
title_short Design and Control of a 3 kW Wireless Power Transfer System for Electric Vehicles
title_sort design and control of a 3 kw wireless power transfer system for electric vehicles
topic wireless power transfer (WPT)
topology analysis
power regulation
electric vehicle
url http://www.mdpi.com/1996-1073/9/1/10
work_keys_str_mv AT zhenshiwang designandcontrolofa3kwwirelesspowertransfersystemforelectricvehicles
AT xuezhewei designandcontrolofa3kwwirelesspowertransfersystemforelectricvehicles
AT haifengdai designandcontrolofa3kwwirelesspowertransfersystemforelectricvehicles