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CIrEd 2021 - The 26th International Conference and Exhibition on Electricity distribution

作者： J. Peppanen J. Taylor d. Fonseca J. Snodgrass S. Chen T. I. Strasser Distribution Operations & Planning Electric Power Research Institute Knoxville TN USA R&D Department Sinapsis - Inovação em Energia São Paulo Brazil Distribution Services POWER Engineers Inc. Denver CO USA Power System Studies RLC Engineering PLLC Falmouth ME USA Center for Energy AIT Austrian Institute of Technology Vienna Austria

With growing levels of distributed energy resources (dEr), effective assessment and design of active distribution systems increasingly depend upon access to models that accurately represent the various dEr and their controls. However, as dEr technologies continue to rapidly evolve, along with the analysis needed to capture their impacts on the system, there is an increasing need for benchmark models that can serve as a common reference by distribution engineers, vendors, academia, and other industry stakeholders. This paper provides an update on the work by CIGrE Working Group C6.36: “distributed Energy resource Models for Impact Assessment” to identify a set of benchmark dEr models for quasi-static time-series load flow (QSTS) simulations, increasingly used to evaluate active distribution system impacts and performance. These benchmark models can be used by the industry to understand and verify the performance of existing models as well as serve as a reference for further modifications and enhancements. This paper discusses the working groups proposed dEr benchmark model framework, which specifies the dEr benchmark model hierarchy and requirements. Additionally, initial efforts in developing benchmark models for PV systems, energy storage systems, and smart inverters are presented along with the lessons learned and future work.

关键词： distribution networks energy resources photovoltaic power systems time series wind power plants load flow distributed power generation invertors power grids

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Fully implantable and battery-free wireless optoelectronic system for modulable cancer therapy and real-time monitoring

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npj Flexible Electronics 2023年第1期7卷 119-130页

作者： Kiho Kim In Sik Min Tae Hee Kim do Hyeon Kim Seungwon Hwang Kyowon Kang Kyubeen Kim Sangun Park Jongmin Lee Young Uk Cho Jung Woo Lee Woon-Hong Yeo Young Min Song Youngmee Jung Ki Jun Yu Functional Bio-integrated Electronics and Energy Management Lab School of Electrical and Electronic EngineeringYonsei University50 Yonsei-roSeodaemun-guSeoul 03722Republic of Korea Center for Biomaterials Biomedical Research InstituteKorea Institute of Science and Technology(KIST)Seoul 02792Republic of Korea Department of Fusion Research and Collaboration Biomedical Research InstituteSeoul National University HospitalSeoul 03080Republic of Korea School of Electrical Engineering and Computer Science(EECS) Gwangju Institute of Science and Technology(GIST)Gwangju 61005Republic of Korea PA1 Foundry BusinessSamsung Electronics1 Samsungjeonja-roHwaseong-siGyeonggi-doRepublic of Korea R&D Center DNA Lab PharmaresearchSeongnam 13486Republic of Korea KU-KIST Graduate School of Converging Science and Technology Korea UniversitySeoul 136-705Republic of Korea School of Materials Science and Engineering Energy Materials for Soft Electronics LaboratoryPusan National UniversityBusan 46241Republic of Korea IEN Center for Human-Centric Interfaces and Engineering and George W.Woodruff School of Mechanical Engineering Georgia Institute of TechnologyAtlantaGA 30332USA Wallace H.Coulter Department of Biomedical Engineering Georgia Institute of Technology and Emory University School of MedicineAtlantaGA 30332USA Institute for Robotics and Intelligent Machines Parker H.Petit Institute for Bioengineering and BiosciencesInstitute for MaterialsNeural Engineering CenterGeorgia Institute of TechnologyAtlantaGA 30332USA School of Electrical and Electronic Engineering YU-Korea Institute of Science and Technology(KIST)InstituteYonsei University50Yonsei-roSeodaemun-guSeoul 03722Republic of Korea

Photodynamic therapy(PdT)is attracting attention as a next-generation cancer treatment that can selectively destroy malignant tissues,exhibit fewer side effects,and lack pain during *** PdT systems have recently been developed to resolve the issues of bulky and expensive conventional PdT systems and to implement continuous and repetitive *** implantable PdT systems,however,are not able to perform multiple functions simultaneously,such as modulating light intensity,measuring,and transmitting tumor-related data,resulting in the complexity of cancer ***,we introduce a flexible and fully implantable wireless optoelectronic system capable of continuous and effective cancer treatment by fusing PdT and hyperthermia and enabling tumor size monitoring in *** system exploits micro inorganic light-emitting diodes(μ-LEd)that emit light with a wavelength of 624 nm,designed not to affect surrounding normal tissues by utilizing a fully programmable light intensity ofμ-LEd and precisely monitoring the tumor size by Si phototransistor during a long-term implantation(2–3 weeks).The superiority of simultaneous cancer treatment and tumor size monitoring capabilities of our system operated by wireless power and data transmissions with a cell phone was confirmed through in vitro experiments,ray-tracing simulation results,and a tumor xenograft mouse model in *** all-in-one single system for cancer treatment offers opportunities to not only enable effective treatment of tumors located deep in the tissue but also enable precise and continuous monitoring of tumor size in real-time.

关键词： optoelectronic enable battery

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Consideration of the Behaviour of a Wind Turbine Wake Using High-Fidelity CFd Simulations 15th

Consideration of the Behaviour of a Wind Turbine Wake Using ...

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15th World Congress on Computational Mechanics and 8th Asian Pacific Congress on Computational Mechanics: Pursuing the Infinite Potential of Computational Mechanics, WCCM-APCOM 2022

作者： Shibuya, Koichiro Uchida, Takanori Inui, Masaki Bai, Zhiren Taniyama, Yoshihiro Engineering and Technology Development Department Wind Power Business Unit Carbon Neutral Solution Business Headquarters Hitachi Zosen Corporation 7-89 Nankokita 1-chome Suminoe-ku Osaka559-8559 Japan Dept. Mechanical and Systems Engineering Kyushu University 6-1 Kasuga-koen Kasuga Fukuoka816-8580 Japan Kyushu University 6-1 Kasuga-koen Kasuga Fukuoka816-8580 Japan Department of Mechanical Engineering Osaka University 2-1 Yamadaoka Suita-shi Osaka565-0871 Japan Mechanical Engineering R&D Department Energy Systems Research and Development Center Toshiba Energy Systems & Solutions Corporation 8 Shinsugita-Cho Isogo-ku Yokohama-shi Kanagawa235-8523 Japan

during operation of a wind turbine, wake flow occurs behind the wind turbine, reducing the amount of power generation and the life of the downwind wind turbine. To understand wind turbine wake flow, Computational Fluid dynamics (CFd) simulations were conducted using "rIAM-COMPACT" to reproduce wind turbine wake flow. There is no significant difference in the flow field of the wind turbine wake between upwind-type and downwind-type turbines. In the 5d downstream of the wind turbine, the vertical distribution of the mainstream velocity component is almost the same regardless of the power of the inflow profile in the swept area. When the inflow wind has a wind direction change of up to 10 degrees, the wind turbine wake is quite diffuse, and its vertical distribution is in good agreement with the field measurements made by the vertical profile lidar. © 2022 WCCM-APCOM 2022 - 15th World Congress on Computational Mechanics and 8th Asian Pacific Congress on Computational Mechanics: Pursuing the Infinite Potential of Computational Mechanics. All rights reserved.

关键词： Large eddy simulation

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The characteristics of sintered copper layer by pressure sintering process for power module application

The characteristics of sintered copper layer by pressure sin...

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International Exhibition and Conference for power Electronics, intelligent Motion, renewable Energy and Energy Management, PCIM Europe 2019

作者： Yamauchi, Shinichi Anai, K. Jo, J.L. Sakaue, T. Chang, J.Y. Fun, S.Y. Cheng, K.H. Cheng, H.W. Lin, H.H. Han, W.K. Hsu, S.F. Tseng, C.M. Chang, T.C. Engineered Materials Sector R&D Center Mitsui Mining & Smelting Co. Ltd Japan Intelligent Power Module & System Department Electronics and Optoelectronics system Research Laboratories Industrial Technology Research Institute Taiwan

ISBN: (纸本)9783800749386

Copper sinter materials were investigated for potential use as joining material. In this study we evaluated newly developed Cu sinter paste for joining material and studied initial joining properties and reliability with power module. The shear strength of Cu joining exceeded 70 MPa without voids in initial junction by optimizing joining conditions. Furthermore, the reliability with power module was also evaluated, which indicated no significant change of thermal resistance after TCT. © VdE VErLAG GMBH · Berlin · Offenbach.

关键词： Sintering

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development of high-strength high-corrosion-resistant conductor and accessories

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IEEJ Transactions on power and Energy 2020年第4期140卷 253-260页

作者： Kato, Atsushi Ohtani, Kazuya Nagano, Koji Ogawa, Toshiharu Watabe, Masato Iwayama, Isao Ohtaka, Kazuyoshi Nakagawa, Hiroyuki Transmission System and Telecommunications Dept Electric Power Development Co. Ltd. 15-1 Ginza 6-Chome Chuo-ku Tokyo104-8165 Japan Overhead Transmission Line Division Sumitomo Electric Industries Ltd. 4-10-1 Kawajiri-cho Hitachi319-1411 Japan Energy and Electronic Materials R&D Laboratories Sumitomo Electric Industries Ltd. 1-1-3 Shimaya Konohana-ku Osaka554-0024 Japan Power Cable Accessories Design and Engineering Department Sumiden Transmission and Distribution System Products Ltd. 6F Akasaka Center Building 1-3-13 Motoakasaka Minatoku Tokyo107-8468 Japan

Generally, the conductors of the long span transmission lines crossing a strait or a river are designed to have a special design different from the normal span. Various investigations and considerations are required beforehand for replacement of these conductors. In this paper, we show a new kind of high-strength and high-corrosion-resistant conductors enhanced conductivity and accessories that we have developed for the long span transmission lines. © 2020 The Institute of Electrical Engineers of Japan.

关键词： Electric lines

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retracted: Target tracking and risk avoidance system for intelligent driving system based on 5G signal anomaly detection

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International Journal of Communication Systems 2020年第14期36卷

作者： Wenkui Lan Department of R&D Chongqing Automotive Power System Testing Engineering Technology Research Center Chongqing China Department of R&D Chongqing Industry Polytechnic College Chongqing China

The above article, published online on 29 June 2020 on Wiley Online Library ( https://***/doi/full/10.1002/dac.4518 ) has been retracted by agreement between the journal Editor-in-Chief, Mohammad Obaidat and John Wiley & Sons Ltd. The retraction has been agreed following an investigation based on allegations raised by a third party. It found that the article contains inconsistencies including irrelevant citations and was not reviewed in line with the journal’s peer review standards. The editorial office did not receive a response from the authors, and so requested underlying experimental data was not available for evaluation. Therefore, the article’s conclusions must be considered insufficiently supported.

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Improved algorithms and coupled neutron-photon transport for auto-importance sampling method

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Chinese Physics C 2017年第1期41卷 100-109页

作者：王鑫李君利武祯邱睿李春艳梁漫春张辉刚直徐红 Department of Engineering Physics Tsinghua University Beijing 100084 China Key Laboratory of Particle ＆ Radiation Imaging Ministry of Education Beijing 100084 China Nuctech Company Limited Beijing 100084 China State Nuclear Hua Qing (Beijing) Nuclear Power Technology R＆D Center Co. Ltd. Beijing 102209 China

The Auto-Importance Sampling（AIS） method is a Monte Carlo variance reduction technique proposed for deep penetration problems, which can significantly improve computational efficiency without pre-calculations for importance distribution. However, the AIS method is only validated with several simple examples, and cannot be used for coupled neutron-photon transport. This paper presents improved algorithms for the AIS method, including particle transport, fictitious particle creation and adjustment, fictitious surface geometry, random number allocation and calculation of the estimated relative error. These improvements allow the AIS method to be applied to complicated deep penetration problems with complex geometry and multiple materials. A Completely coupled Neutron-Photon Auto-Importance Sampling（CNP-AIS） method is proposed to solve the deep penetration problems of coupled neutron-photon transport using the improved algorithms. The NUrEG/Cr-6115 PWr benchmark was calculated by using the methods of CNP-AIS, geometry splitting with russian roulette and analog Monte Carlo, respectively. The calculation results of CNP-AIS are in good agreement with those of geometry splitting with russian roulette and the benchmark solutions. The computational efficiency of CNP-AIS for both neutron and photon is much better than that of geometry splitting with russian roulette in most cases, and increased by several orders of magnitude compared with that of the analog Monte Carlo.

关键词： Monte Carlo deep penetration auto-importance sampling coupled neutron-photon transport

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research on a new energy-recovery system for hybrid hydraulic excavators

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IOP Conference Series: Earth and Environmental Science 2019年第4期300卷

作者： daqing Zhang Jun Gong Yuming Zhao Changsheng Liu Peng Hu Zhongyong Tang The National Enterprise R&D Center Sunward Intelligent Equipment CO. Ltd. Changsha China Department of Mechanical and Electrical Engineering Hunan University of Science and Technology. Xiangtan China The State Key Laboratory of Fluid Power and Mechatronic Systems Zhejiang University Hangzhou China

Hydraulic excavators, especially medium and large excavators, waste a lot of energy during the frequent lifting-lowering process of its boom. recovery and regeneration the wasted energy is an important means to achieve energy saving and emission reduction of excavators. In this paper, a potential energy recovery and regeneration system based on a multi-cylinder structure working device is invented. Firstly, the theoretical analysis of the system, and the modeling and simulation research are carried out. results show that under the same boom-single-action conditions, the energy-saving efficiency of the excavator equipped with energy recovery system can reach 33%, it has important reference significance for evaluating the energy efficiency of the new system.

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NTIrE 2020 Challenge on real-World Image Super-resolution: Methods and results

arXiv

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arXiv 2020年

作者： Lugmayr, Andreas danelljan, Martin Timofte, radu Ahn, Namhyuk Bai, dongwoon Cai, Jie Cao, Yun Chen, Junyang Cheng, Kaihua Chun, SeYoung deng, Wei El-Khamy, Mostafa Man Ho, Chiu Ji, Xiaozhong Kheradmand, Amin Kim, Gwantae Ko, Hanseok Lee, Kanghyu Lee, Jungwon Li, Hao Liu, Ziluan Liu, Zhi-Song Liu, Shuai Lu, Yunhua Meng, Zibo Navarrete Michelini, Pablo Micheloni, Christian Prajapati, Kalpesh ren, Haoyu Hyeok Seo, Yong Siu, Wan-Chi Sohn, Kyung-Ah Tai, Ying Muhammad Umer, rao Wang, Shuangquan Wang, Huibing Haoning Wu, Timothy Wu, Haoning Yang, Biao Yang, Fuzhi Yoo, Jaejun Zhao, Tongtong Zhou, Yuanbo Zhuo, Haijie Zong, Ziyao Zou, Xueyi Wang, Li-Wen Cani, Marie-Paule Siu, Wan-Chi Yang, Huan Fu, Jianlong Shi, Yukai Chen, Junyang Lee, Kanghyu Park, Jaihyun Lee, Junyeop Min, Jeongki Lee, Bokyeung Ko, Hanseok Yoo, Jaejun Sohn, Kyung-Ah Micheloni, Christian Hu, Fengshuo Wang, Yanhong Lu, Yunhua Peng, Jinjia Wang, Huibing Zhuo, Haijie Lee, Junyeop Min, Jeongki Lee, Bokyeung Park, Jaihyun Ko, Hanseok Tai, Lab Ying Jilin Li, Youtu Lab Liu, Shuai Yang, Biao Liu, Xing Chen, Shuaijun Zhao, Lei Wang, Zhan Lin, Yuxuan Jia, Xu Gao, Qinquan deng, Wei Kheradmand, Amin El-Khamy, Mostafa Wang, Shuangquan Bai, dongwoon Lee, Jungwon Patel, Heena Chudasama, Vishal Upla, Kishor ramachandra, raghavendra raja, Kiran Busch, Christoph Meng, Zibo Ho, Chiu Man Computer Vision Lab ETH Zurich Switzerland LIX - Computer science laboratory at the cole polytechnique Palaiseau France Center of Multimedia Signal Processing Hong Kong Polytechnic University Hong Kong Shanghai Jiao Tong University China Microsoft Research Beijing China Guangdong University of Technology China Intelligent Signal Processing Laboratory Korea University Korea Republic of Ajou University Korea Republic of EPFL University of Udine Italy BOE Technology Group Co. Ltd Dalian Maritime University China Guangdong OPPO Mobile Telecommunications Corp. Ltd Department of Video Information Processing Korea University Korea Republic of School of Electrical Engineering Korea University Korea Republic of Tencent Youtu Lab Yun Cao Tencent Youtu Tencent Youtu Lab Chengjie Wang Tencent Tencent Youtu Lab Feiyue Huang Tencent Youtu Lab Peking University China North China University of Technology China Huawei Technologies Co. Ltd China Fuzhou University Tong Tong Fuzhou University Imperial Vision Technology China Fuzhou University Imperial Vision Technology China Imperial Vision Technology SOC R&D Samsung Semiconductor Inc. United States Ulsan national institute of science and technology Korea Republic of Sardar Vallabhbhai National Institute Of Technology Surat India Norwegian University of Science and Technology Gjøvik Norway InnoPeak Technology

This paper reviews the NTIrE 2020 challenge on real world super-resolution. It focuses on the participating methods and final results. The challenge addresses the real world setting, where paired true high and low-resolution images are unavailable. For training, only one set of source input images is therefore provided along with a set of unpaired high-quality target images. In Track 1: Image Processing artifacts, the aim is to super-resolve images with synthetically generated image processing artifacts. This allows for quantitative benchmarking of the approaches w.r.t. a ground-truth image. In Track 2: Smartphone Images, real low-quality smart phone images have to be super-resolved. In both tracks, the ultimate goal is to achieve the best perceptual quality, evaluated using a human study. This is the second challenge on the subject, following AIM 2019, targeting to advance the state-of-the-art in super-resolution. To measure the performance we use the benchmark protocol from AIM 2019. In total 22 teams competed in the final testing phase, demonstrating new and innovative solutions to the problem. Copyright © 2020, The Authors. All rights reserved.

关键词： Optical resolving power

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A simulation based approach to detect wear in industrial robots

A simulation based approach to detect wear in industrial rob...

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IEEE International Conference on Automation Science and Engineering (CASE)

作者： V Sathish Srini ramaswamy Sachit Butail ABB India Development Center Global R&D Project Manager-Engineering (Power Generation) at ABB Department of Electronics and Communication Engineering Indraprastha Institute of Information Technology Delhi (IIITD) New Delhi India

In this paper we simulate, detect, and locate wear in industrial robots operating over long time-periods on repetitive tasks. We simulate wear using the MATLAB robotics toolbox by increasing the Coulomb friction coefficient on select robot axes. disturbance and measurement noise are included in each axis while computing the inverse and forward kinematics. To compare change across all configurations within a repetitive cycle, the output torque data is transformed into a normalized distribution sampled once every hour. We identify wear as significant change in torque values from normal operating conditions, and detect wear using principal component analysis; the source axis is located by cross-correlating the output data from all axes through time. Simulation results with a range of friction values tested for three different tasks across all axes show that wear detection on the basis of comparison with normal operating condition depends on the manipulator task, whereby onset of wear was detected in five out of six axes for one task and two out of six axes in the rest. Wear location was correctly identified in all successful detections except one.

关键词： Friction Torque Service robots Principal component analysis Noise Noise measurement

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