因為人們喜歡靈活、便攜、無繩的電器,無線電力傳輸(WPT)是一種很有前途的技術(shù),可以在不使用物理連接的情況下為這些設(shè)備供電。因此,WPT技術(shù)以其便利、安全,即使在雨天的情況下也不需要維護(hù)而受到廣泛的關(guān)注。另一方面,使用電動發(fā)動機(jī)代替內(nèi)燃機(jī)(ICE)的電動汽車(EV),在高效率、低噪音、日常維護(hù)少、尾氣零排放等方面優(yōu)于傳統(tǒng)的ICE汽車。然而,電動汽車充電時間長,成本高,行駛里程短,而且缺乏可靠的電動汽車電池充電裝置。這些原因以及更多的原因在推遲它們的實際部署方面存在著重大問題。為了解決這些問題,電動汽車在停車時間和道路上均采用WPT充電。由于電磁場(EMF)通過較大的氣隙將功率從發(fā)射機(jī)(Tx)線圈傳輸?shù)浇邮諜C(jī)(Rx)線圈,從而增加充電器周圍的漏磁通量。因此,增強(qiáng)耦合需要在工作區(qū)域(兩個線圈之間)增加EMF,同時降低工作區(qū)域外的EMF,因為它會對生物健康產(chǎn)生影響,并會干擾附近的電子設(shè)備。本文的貢獻(xiàn)主要分為兩個部分:首先,研究線圈和鐵芯的形狀,以增強(qiáng)工作區(qū)域的磁耦合。其次,評估充電器周圍的EMF環(huán)境,以確保此設(shè)計符合國際EMF指南。此外,介紹了采用集總電路模型的WPT系統(tǒng)模型,討論了鐵芯相對磁...

【文章頁數(shù)】：142 頁

【學(xué)位級別】：博士

【文章目錄】：
ACKNOWLEDGMENTS
摘要
abstract
Chapter1.INTRODUCTION
    1.1 Background
    1.2 Wireless power transfer history and basic concepts
    1.3 Classification of Wireless Power Transfer Systems
        1.3.1 Near-Field Wireless Power Transfer Systems
            1.3.1.1 Inductive power transfer(IPT)system
            1.3.1.2 Capacitive power transfer(CPT)system
        1.3.2 Far-Field Wireless Power Transfer Systems
            1.3.2.1 MICROWAVE POWER TRANSFER(MPT)
            1.3.2.2 Laser Power Transfer(LPT)
            1.3.2.3 Wireless Energy Harvesting(WEH)
    1.4 Electric vehicles charging technologies
    1.5 Exposure to time-varying electromagnetic fields
    1.6 Electromagnetic interference(EMI)
    1.7 Electromagnetic Standards and guidelines
    1.8 STATE OF THE ART
        1.8.1 MAGNETIC PAD STRUCTURE
            1.8.1.1KAIST
            1.8.1.2 University of Auckland(UOK)
            1.8.1.3 Non-Polarized and Polarized pads
        1.8.2 SHIELDING TECHNIQUES
            1.8.2.1 Conventional shielding method
            1.8.2.2 Active shielding method
            1.8.2.3 Resonance reactive current loop method
        1.8.3 COMPENSATION TOPOLOGIES
        1.8.4 COMMERCIAL WPT CHARGERS
        1.8.5 THE RESEARCH OBJECTIVES
        1.8.6 The thesis outline
Chapter2.SYSTEM MODEL and ANALYSIS
    2.1 Introduction
    2.2 Electromagnetic field theory
        2.2.1 Maxwell's equations
            2.2.1.1 Gauss’s law
            2.2.1.2 Ampere’s law with Maxwell’s correction
        2.2.2 Skin and proximity effects
    2.3 WPT for charging EVs modeling
        2.3.1 Self-and mutual inductance
            2.3.1.1 Inductance for air-core
            2.3.1.2 Inductance in the presence of ferrite
        2.3.2 FEM analysis tool:
        2.3.3 The lumped circuit model
    2.4 Design Analysis
        2.4.1 Impact of load resistance and mutual inductance
        2.4.2 Impact of coupling coefficient and frequency
    2.5 Biot-Savart Law
    2.6 Chapter conclusion
Chapter3.Coils design and EMF Environment Evaluation
    3.1 Introduction
    3.2 Coil and Core Design Analysis
        3.2.1 Coil Geometry
        3.2.2 Core Material Permeability and Core Loss Evaluation
            3.2.2.1 Core Material Permeability
            3.2.2.2 Core Loss and Core Thickness
    3.3 The Proposed Core Structure
        3.3.1 The Simulation Analysis
        3.3.2 Optimal Core Structure Design
    3.4 Experimental Set-Up
        3.4.1 Experimental Results
        3.4.2 Four core structure further analysis
    3.5 Chapter Conclusion
Chapter4.The shielding techniques in WPT systems
    4.1 Introduction
        4.1.1 Passive shielding
        4.1.2 Active shielding
        4.1.3 Resonant reactive current(RRC)shielding
    4.2 Shielding Effectiveness SE
    4.3 System model and analysis
        4.3.1 WPT MODELING WHEN FERRITE SHIELD IS USED
        4.3.2 WPT system modeling when using metallic shield
        4.3.3 WPT modeling when using RRC shield
    4.4 The resonant reactive current shield loop position
    4.5 EMF environment evaluation method
        4.5.1 Simulation results for the proposed two shield loops positions
    4.6 The proposed shielding techniques
        4.6.1 Simulation results analysis
        4.6.2 The experimental set-up
    4.7 Chapter conclusion
Chapter5.CONCLUSION AND RECOMMENDATIONS
    5.1 CONCLUSION
    5.2 RECOMMENDATIONS
References
Publication list



本文編號：4034714