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A New Approach to Fit the Distorted Reflector Antenna and its Computation of electrical Characteristics

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A New Approach to Fit the Distorted Reflector Antenna and it...

Integrated energy storage system based on triboelectric nanogenerator in electronic devices

首届亚洲机械电子学学术会议

作者： C.S.Wang B.Y.duan Y.Y.Qiu J.L.Du X.D.Shao school of Electro-Mechanical engineering Xidian University Xi’an 710071 China

＜正＞The traditional method of analyzing distorted reflector antenna is to compute its electrical characteristics on the basis of the whole distorted reflector by exploring the best-fit paraboloid for rms surface error,which, however,may make the big partial distortion of reflector *** on the shape of distorted reflector, this paper presents a new fitting approach combining the hoop trigonometric function fitting and quadratic radial function fitting methods,with which the reflector can be analyzed and fitted *** paper also includes the derivation of the required formulae and the application of the new approach to the analysis of a 7.3-m antenna with good and useful results.

关键词： Reflector Antenna Deviation Surface Fitting Radiation Pattern Gain

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Frontiers of Chemical Science and engineering 2021年第2期15卷 238-250页

作者： Xiao Feng Yang Zhang Le Kang Licheng Wang Chongxiong duan Kai Yin Jinbo Pang Kai Wang school of electrical engineering Qingdao UniversityQingdao 266071China Department of Energy“Galileo Ferraris” Politecnico di TorinoTurin 10129Italy school of Materials Science and engineering Xi’an University of Science and TechnologyXi’an 710054China school of Information engineering Zhejiang University of TechnologyHangzhou 310023China school of Materials Science and Energy engineering Foshan UniversityFoshan 528231China Hunan Key Laboratory of Super Microstructure and Ultrafast Process School of Physics and ElectronicsCentral South UniversityChangsha 410012China Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of Shandong Institute for Advanced Interdisciplinary Research(iAIR)University of JinanJinan 250022China

The emergence of electronic devices has brought earth-shaking changes to people's ***,an extemal power source may become indispensable to the electronie devices due to the limited capacity of *** one of the possible solutions for the extermal power sources,the triboelectric nanogenerator(TENG)provides a novel idea to the increasing mumber of personal electronic *** is a new type of energy ollector,which has become a hot spot in the field of *** is widely used at the acquisition and conversion of mechan-ical enegy to electrice energy through the principle of electrostatic *** this basis,the TENG could be integrated with the energy stonage system into a self-powered system,W hich can supply power to the electronic devices and make them work *** this review,TENG's basic structure as well as its working process and working mode are firstly *** integration method of TENGs with enegy storage systems and the related research status are then introduced in *** the end of this paper,we put forward some problems and discuss the prospect in the future.

关键词： electronic devices triboelectrice nanogenerator mechanical energy sel-powered system

Intercalation of Two-dimensional Layered Materials

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Chemical Research in Chinese Universities 2020年第4期36卷 584-596页

作者： ZHOU Xinyun YANG Juehan ZHONG Mianzeng XIA Qinglin LI Bo duan Xidong WEI Zhongming Hunan Key Laboratory of Two-dimensional Materials Department of Applied PhysicsSchool of Plhvsics and ElectronicsHunan UiniversitChangsha 410082.P R.China Hunan Key Laboratory of Two-dimensional Materials and State Key Laboratory for Chemo Biosensing and Chemometrics College of Chemistrv and Chemical Engineering Hunan UniversityChangsha 410082P.R.China State Key Laboratorv of Superlattices and Microstructures Institute of SemiconductorsChinese Academv ofSciences&College ofMaterials Science and Oplo-Electronic Technology Lniversity of Chinese Academv ofSciencesBeijing 100083P R.China school of Physics and electronics Central South Universiny Changsha 410083P R.China

Two-dimensional(2D)layered materials have attracted great attention due to their unique electrical,optical,thermal and mechanical properties.2D layered materials have miique van der Waals gaps,thus the foreign substance,such as atoms,molecules and ions,can be inserted into the gaps to change the physical and chemical properties of 2D layered materials,which is conducive to realize their multi-fimctional ***,we present a critical review of recent research progress of 2D intercalated materials,including the synthesizing metliods,theoretical calculation,characterization and multifunctional ***,we will summarize llie current challenges and future opportunities in the development of 2D intercalated materials.

关键词： Two-dimensional layered material Intercalation Multi-functional application

Interfacial space charge characteristic of PPLP insulation for HVDC cables

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High Voltage 2020年第5期5卷 628-635页

作者： Xuefeng Zhao Lu Pu Zhiqiang Xu George Chen Wei duan Haofei Sun Zeli Ju Shannxi Electric Power Research Institute Xi'anShannxiPeople's Republic of China school of electronics and Computer Science University of SouthamptonSouthamptonUK

High-voltage DC(HVDC)cables show more efficiency than high-voltage AC cables over the long distance power transmission and have attracted significant attention recently due to rapid developments in off-shore wind *** laminated paper(PPLP)insulation based HVDC cables have provided a reliable operation for many years and are the highest voltage level in operation at the *** this study,the authors intend to understand the electrical performance of PPLP insulation system by examining space charge in detail,especially at the *** has been found that the interface between polypropylene and Kraft paper acts as trap for charge carriers,resulting in an optimal electric field distribution in PPLP insulation *** optimal electric field distribution enhances overall electrical performance of PPLP insulation,including higher dc breakdown strength and lower electrical conductivity.

关键词： PPLP insulation charge

用于改善电流过零点畸变的Vienna整流器空间矢量调制策略

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电工技术学报 2019年第18期34卷 3854-3864页

作者：王涛陈昌松段善旭朱文杰刘恬畅华中科技大学电气与电子工程学院强电磁工程与新技术国家重点实验室

Vienna整流器在空间矢量调制(SVM)下输入电流过零点会产生畸变,降低电流总谐波畸变率(THD)。本文首先针对采用dq坐标系双环控制下的交错并联Vienna整流器,从SVM等效调制波的角度阐述了Vienna整流器输入电流过零点畸变的原因,并提出一种... 详细信息

Vienna整流器在空间矢量调制(SVM)下输入电流过零点会产生畸变,降低电流总谐波畸变率(THD)。本文首先针对采用dq坐标系双环控制下的交错并联Vienna整流器,从SVM等效调制波的角度阐述了Vienna整流器输入电流过零点畸变的原因,并提出一种过零钳位空间调制策略,通过优化输入电流过零点附近扇区内冗余矢量的分配,避免输入电流过零点的畸变,降低了输入电流THD,该策略实施简单,无需额外计算量。其次,分析这种调制策略的适用范围以及对Vienna整流器中点电流、电感电流纹波的影响。结果表明,和传统SVM相比,本文所提方式适用范围广,在抑制电流过零点波形畸变的同时能够减少附近的电流纹波。最后,通过仿真和实验验证了所提调制方式的有效性和理论分析的正确性。

关键词： Vienna 整流器交错并联三电平空间矢量调制过零畸变

Editorial for the Special Issue on Microwave Wireless Power Transfer Technology

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engineering 2023年第11期30卷 1-2页

作者： Baoyan duan Yi Huang school of Electromechanical engineering Xidian UniversityXi’an 710071China Department of electrical engineering and electronics The University of LiverpoolLiverpool L693GJUK

Generally speaking,wireless power/energy transfer technology can be divided into two different methods:near-field transfer based on coupling theory and far-field transfer based on radiating ***-distance far-field transfer can be further divided into microwave-and laser-based *** current technologies,the efficiencies of direct current(DC)–DC transmission via microwave and laser are about 20%and 6%–8%,respectively.

关键词： laser wireless microwave

“三全育人”背景下课程思政育人的建设及实践

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电气电子教学学报 2024年第4期46卷 86-90页

作者：胡欣段晨东肖剑周运强王茜玉长安大学能源与电气工程学院西安710064 长安大学电子与控制工程学院西安710064

在“三全育人”和“课程思政”的背景下,以“计算机原理与应用”课程为例,从提升课程目标、构建可实施方案和优化课程体系等多个方面展开课程建设。思政育人中构建了“知识点驱动、思政元素融合、多元并举、全员参与、全程育人”的课程... 详细信息

在“三全育人”和“课程思政”的背景下,以“计算机原理与应用”课程为例,从提升课程目标、构建可实施方案和优化课程体系等多个方面展开课程建设。思政育人中构建了“知识点驱动、思政元素融合、多元并举、全员参与、全程育人”的课程育人模式,形成了老中青结合的“红‘芯’育人”课程教学团队和思政育人的教学设计;课程思政育人建设过程中以学生为主体,教师为引导,探索出了一条行之有效的建设一流课程的方法,实现了“三全育人”与思政育人、课程育人相统一。

关键词：三全育人课程思政思政育人

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动态无线能量传输系统中的通信网络

电源学报 2018年第6期16卷 117-124页

作者：牛金涛蔡涛段善旭丰昊张晓明华中科技大学电气与电子工程学院强电磁工程与新技术国家重点实验室武汉430074

为了解决电动汽车发展中的充电不便及续航不足的问题,在无线能量传输WPT(wireless power transfer)技术研究基础之上,动态无线能量传输DWPT(dynamic wireless power transfer)系统的研究得到了越来越多的关注。建立及时、高速、稳定的... 详细信息

为了解决电动汽车发展中的充电不便及续航不足的问题,在无线能量传输WPT(wireless power transfer)技术研究基础之上,动态无线能量传输DWPT(dynamic wireless power transfer)系统的研究得到了越来越多的关注。建立及时、高速、稳定的数据通信网络,对于分段式DWPT系统中进行车-源协调控制、实现电动汽车电池荷电状态信息和车辆位置信息的实时共享、保证源的及时投切以及确保系统能够提供有序高效的供电过程至关重要。对分段式DWPT系统中的通信网络需求、原边布置与通信网络架构的关系进行了阐述,通过采用原边CAN总线通信及原副边基于SPI接口设置的无线通信模块nRF24L01,构建了实例系统中的网络通信架构,并在构建的小功率DWPT演示平台上对所提通信网络进行了实验验证。

关键词：动态无线能量传输通信网络架构数据共享 CAN总线

一种考虑中点平衡的ANPC变换器的混合断续脉冲宽度调制策略

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电源学报 2021年第1期19卷 49-58页

作者：徐志远朝泽云程华陈昌松段善旭华中科技大学电气与电子工程学院强电磁工程与新技术国家重点实验室武汉430074 中国舰船研究设计中心武汉430064

对于ANPC(active neutral-point-clamped)变换器,采用断续脉冲宽度调制DPWM(discontinuous pulse width modulation)具有开关损耗小的优点,但也存在中点电位波动较大的问题,为此提出了一种基于切换钳位的混合断续脉冲宽度调制Hybrid DPW... 详细信息

对于ANPC(active neutral-point-clamped)变换器,采用断续脉冲宽度调制DPWM(discontinuous pulse width modulation)具有开关损耗小的优点,但也存在中点电位波动较大的问题,为此提出了一种基于切换钳位的混合断续脉冲宽度调制Hybrid DPWM策略,实现DPWM策略下ANPC变换器的中点电位平衡。在单位功率因数下,该方法根据中点电位的高低采用不同钳位方式,并对不同钳位方式下的开关序列进行优化,减小开关次数;在非单位功率因数、高调制比下,该方法根据电荷守恒计算大矢量、中矢量和小矢量作用时间,通过中矢量、小矢量和大矢量的合理分配实现中点电位平衡。同时,2种中点平衡方式在全范围内具有互补性,使开关管在每个开关周期内动作4~6次。最后,对多种调制策略的动稳态性能和中点电位平衡能力等进行了实验对比,验证了所提混合断续脉冲宽度调制策略的有效性。

关键词： ANPC变换器断续脉冲宽度调制中点平衡