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类型 基础研究 预答辩日期 2017-12-03
开始(开题)日期 2015-10-19 论文结束日期 2017-09-28
地点 东南大学 动力楼318 论文选题来源 国家自然科学基金项目     论文字数 7.16 (万字)
题目 磁谐振式无线电能传输系统电磁环境与生物电磁曝露若干问题研究
主题词 无线电能传输,谐振,电磁场,人体暴露,电磁兼容
摘要 随着人类文明从“蒸汽时代”、“电气时代”到“信息时代”的不断发展,钢铁、铁路、化工、电力、汽车等重工业迅速兴起,全球范围内的信息和资源交互也变得更加便捷,人类发展进入了空前繁荣的时期,而随之而来的全球能源迅速消耗使得能源危机和生态危机的问题日益彰显,对此,能源结构正向更清洁和低碳的形式转型。新一代综合能源电力系统基于互联网理念,深度融合新能源发电、柔性输配电、高效储能、智能化控制、远程监测与诊断以及“大数据”、“云计算”等先进技术,充分利用多能源系统的互补特性,以氢气(天然气)、热力和电动汽车(EV)等作为新型储能媒介,打通电力和天然气网络、热力网络以及交通网络之间能源转换通道,通过能源相互转换、网络互联、信息交互和协调控制,实现降低化石能源消耗、减小碳排放、提高能源综合利用效率的目的。 无线电能传输(WPT)技术可以让电动汽车摆脱充电线缆的束缚以提高与新一代能源系统互动灵活性,可以对能源系统中广泛分布的各类传感器供能以降低维护成本,除此之外,随着生产生活电气化、信息化、智能化进一步提升,WPT技术在家电与消费电子、植入式医疗设备、工业自动化设备、无人机、无人水下航行器、物联网、无线传感网络等方面的巨大应用潜能正被逐渐发掘。无线电能传输技术作为电气工程领域最受关注的焦点之一正在助力新一轮技术革命的发展,改变人类生产生活的方式。 随着WPT技术的迅速发展,系统的传输功率、传输效率、传输距离等工作性能指标都发展到满足一般应用需求,在规模化推广应用之前其电磁安全必须达到标准要求。特别是在电动汽车等大功率应用场景以及家电与消费电子等长时间暴露场景,电磁环境问题在依靠磁场耦合进行能量传输的WPT系统里变得尤为突出。然而,国内外在WPT技术电磁环境方面的研究还没有得到足够重视,对WPT技术电磁环境的研究还面临一些瓶颈:没有合理的统一评价指标、没有安全便捷且快速准确分析人体电磁暴露的方法、对电磁环境的优化缺少系统化的方法。 针对WPT系统电磁环境研究面临的主要问题,论文围绕无线电能传输系统电磁环境的分析、测量、评估、优化等方面展开研究,主要包括: 1)谐振式无线电能传输系统人体电磁暴露分析方法研究。建立了可以根据分析精度要求、关注重点而调整的按需减面(On-Demand Polygon Reduction, OPDR)精密人体解剖模型。将WPT系统与应用环境等效为一个二端口网络,利用场路结合的方法进行考虑生物体的复杂环境下WPT系统电磁环境与人体电磁暴露的快速分析。 2)谐振式无线电能传输系统电磁环境实验研究。搭建了谐振式无线电能传输系统电磁环境试验平台,用实验的方法研究了无线电能传输系统的电磁环境的特征,验证了场路结合的电磁环境数值分析方法的准确性。进行电磁环境相关的基础试验研究,初步得出谐振式无线电能传输系统电磁环境的特征、人体电磁场暴露规律以及电磁环境优化方法,为后续的研究提供参考和依据。 3)谐振式无线电能传输系统人体电磁暴露评估方法研究。结合无线电能传输技术特点以及系统与生物体的耦合机制选取合适的电磁场评价指标,依据计算机分析出的WPT系统场强分布可以有效指导场强的测量位置的选择,重点在强场区和人体常处的位置布点测量。当场强超过相关标准限值时,通过不断修正模型将计算机分析结果与测量得到的场强值偏差控制在合理范围,使用计算机分析出的人体模型的体内感应电场、SAR值进行准确合理的无活体WPT系统人体电磁暴露安全评估(Ex Vivo Assessment Method, EVAM)。研究了某些特殊的应用场合,部分指标不能反映人体可能遭受的真实伤害,所选指标需要全部满足而不被超越。 4)谐振式无线电能传输系统电磁环境优化设计与方案综合评估研究。从电磁骚扰源、耦合路径、敏感设备三个方面讨论无线电能传输系统的电磁环境问题,并且研究了相应可行的电磁环境调控方案。深入研究了不同调控方案的电磁环境调控能力以及对系统性能的影响,通过算例研究综合考虑电磁环境调控能力和系统特性进行方案优劣评估。 通过论文的研究,获得合理的WPT电磁环境的测量与评估方法,对无线电能传输领域相关测量或评估标准的完善有重大支撑作用,在优化系统电磁环境时也有很大指导意义。对WPT系统电磁环境调控方案的综合评估,有利于高性能、高安全的WPT系统设计。研究成果可以进一步促进WPT技术的推广应用。
英文题目 RESEARCH ON ELECTROMAGNETIC ENVIRONMENT AND BIOLOGICAL ELECTROMAGNETIC EXPOSURE BY MAGNETIC RESONANT WIRELESS POWER TRANSFER SYSTEMS
英文主题词 wireless power transfer, resonant, electromagnetic field, human exposure, electromagnetic compatibility
英文摘要 With the continuous development of human civilization from “the age of steam”, “the age of electricity” to “the age of information" and the rapid rise of steel, machinery, energy, chemical industry and other heavy industry, the interaction of the information and resource round the world has become more convenient. Accompanied by fact that human development has entered an unprecedented period of prosperity, the consumption of global energy became so sharply, making the energy crisis and ecological crisis becomes more and more obvious. In this regard, the energy structure is moving towards a cleaner and low-carbon form. A new generation of integrated energy power systems based on the Internet concept, fused deeply with new energy power generation, flexible transmission system, high-efficiency energy storage, intelligent control, remote monitoring and diagnosis, “big data”, “cloud computing” and other advanced technologies, makes full advantage of the complementary characteristics of multiple energy systems , using hydrogen (natural gas), heat and electric vehicles (EVs) as new energy storage media, opening up energy conversion channels between electric power and natural gas networks, thermal networks and transportation networks, through energy conversion, network interconnection, information interaction and coordination control, to realize the goal of reducing fossil energy consumption, carbon emissions and improving the comprehensive utilization efficiency of energy. Wireless power transmission (WPT) technology can make EVs getting rid of the shackles of charging cables and improving interaction flexibility with the new generation of energy systems and can supply energy for various types of sensors widely distributed in the energy system in order to reduce maintenance costs. In addition, with the further enhancement of electrification, informatization, and intellectualization in production and life, the potential of WPT technology for great applications is being gradually explored in household appliances and consumer electronics, implantable medical devices, industrial automation equipment, unmanned aerial vehicle, unmanned underwater vehicle, internet of things, wireless sensor networks and other aspects. WPT technology, regarded as one of the most important focuses in the field of electrical engineering, is assisting the development of a new round of technological revolution, changing the way human beings live and work. With the rapid development of WPT technology, the systematic performance index of transmission power, transmission efficiency and transmission distance etc. are developed to satisfy the general application requirements. Before the large-scale application, its electromagnetic safety must meet the standard requirements, especially in high power applications such as electric vehicles, as well as in long exposure scene such as home appliance and consumer electronics. Electromagnetic environment become particularly prominent in WPT systems that rely on magnetic field coupling for energy transmission. However, the electromagnetic environmental problem of WPT technology has not been paid enough attention at home and abroad. There are still some bottlenecks in the research of WPT electromagnetic environment: no reasonable unified evaluation index, no method for safe, convenient, rapid, accurate analysis of electromagnetic exposure of human body, the lack of systematic optimization method of the electromagnetic environment. Aiming at the main problems of electromagnetic environment research in WPT system, the paper focuses on the analysis, measurement, evaluation and optimization of electromagnetic environment of radio energy transmission systems, mainly including: 1) Study on the analysis method of human electromagnetic exposure in resonant wireless power transmission system. A precise human anatomy model based on the OPDR (On-Demand Polygon Reduction) is designed to adjust the accuracy and focus of the analysis. The WPT system and the application environment are equivalent to a two port network, using field-circuit method to operate quick analysis on electromagnetic environment of WPT system and the electromagnetic exposure of the human body. 2) Experimental study on electromagnetic environment of resonant wireless power transmission system. By building a resonant WPT electromagnetic environment test platform, the characteristics of electromagnetic environment is studied by the experimental method, the accuracy of numerical methods for analysis of electromagnetic environment of combining field and circuit is verified. For study on the electromagnetic environment, the preliminary outcomes are the characteristics of resonant wireless power transmission system, the law of human exposure and methods of electromagnetic environment optimization, providing reference for the follow-up study. 3) Study on the evaluation method of human electromagnetic exposure to resonant wireless power transmission system. By combining the characteristics of WPT technology and the coupling mechanism between system and organism selection of suitable electromagnetic field evaluation indexes, effectively field measuring positions can be selected based on the WPT system field distribution by computer analysis, the positions are usually in the strong field region and the sites where the body often stays. When the electric field exceeds the standard limit, ceaselessly revisies are performed to the model until the deviation of the results analyzed by the computer and measured are controlled in a reasonable range. Then in vivo induction field and SAR calculated by computer are used for accurate-reasonable-safe evaluation of ex vivo human exposure to WPT system (Ex Vivo Assessment Method, EVAM). In special applications, some indexes cannot reflect the real harm that the human body may suffer, and then all the indexes should be satisfied and not be surpassed. 4) Research on electromagnetic compatibility design and comprehensive assessment of resonant wireless power transmission system. The electromagnetic environment of WPT system is discussed from three aspects of electromagnetic disturbance source, coupling path and sensitive equipment. The corresponding feasible schemes for electromagnetic environment control are also studied. The electromagnetic environment regulation capability of different regulation schemes and their effects on the system performance are deeply studied. Through a case study, the scheme is evaluated by comprehensively considering the electromagnetic environment regulation ability and system characteristics. Through the research of the paper, reasonable measurement and evaluation method of WPT electromagnetic environment is acquired, which takes a significant supporting role in supporting WPT field measurement or evaluation standard, and also has a great significance in optimizing the system of electromagnetic environment consummation. The comprehensive evaluation of the electromagnetic environment control scheme of WPT system is beneficial to the design of WPT system with high performance and high security. The research results can further promote the popularization and application of WPT technology.
学术讨论
主办单位时间地点报告人报告主题
东南大学 2014.04.16 南京 薛禹胜 在稳定性研究中对创新思维的体会
东南大学 2014.10.18 南京 诸自强 Development of stator wound field machines without rare earth magnets
东南大学 2014.11.15 南京 闻枫 电动汽车无线充电进展
东南大学 2015.05.13 南京 闻枫 Magnetic Field Characteristics of Resonance-based Wireless Power Transfer
东南大学 2016.08.11 南京 邹国棠 无线能量加密在电动汽车中的应用
东南大学 2016.10.10 南京 闻枫 综合能源电力系统
东南大学 2016.12.15 南京 胡宏宇 电动汽车充电设施安装技术与方法
重庆大学 2017.05.21 重庆 闻枫 A New Type of Power Supply for Excitation Mechanism of Motor in Electrical Appliance
     
学术会议
会议名称时间地点本人报告本人报告题目
无线电能传输技术与应用国际学术会议 2014.11.15 南京 电动汽车移动充电效率研究
IEEE国际磁学会议 2015.05.14 北京 Transmission lines’ effects on charging system for on-line electric vehicle sharing the same corridor
汽车与机电工程国际会议 2016.12.10 香港 On-line electric vehicle charging system under complex environment of transmission lines and pedestrian with metallic implants
     
代表作
论文名称
Optimal Magnetic Field Shielding Method by Metallic Sheets in Wireless Power Transfer System
Human Exposure to Electromagnetic Fields from Parallel Wireless Power Transfer Systems
Transmission lines effects on charging system for on-line electric vehicle sharing the same corridor
A New Type of Power Supply for Excitation Mechanism of Motor in Electrical Appliance
 
答辩委员会组成信息
姓名职称导师类别工作单位是否主席备注
王宏华 正高 教授 博导 河海大学
刘闯 正高 教授 博导 南京航空航天大学
林明耀 正高 教授 博导 东南大学
余海涛 正高 教授 博导 东南大学
陈中 正高 研究员 博导 东南大学
      
答辩秘书信息
姓名职称工作单位备注
谭林林 其他 讲师 东南大学