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2024 Energy Conversion Congress and Expo Europe, ECCE Europe 2024

作者： derix, david Blaum, Christian Kruschel, Wolfram Heer, daniel Hensel, Andreas Pfeiffer, Jonas Mier, Ainhoa Puyadena Mena Carrillo, Juan Thoma, Jurgen drexler, Christoph Schmidhuber, Michael Friedrichs, Peter Power Electronics and Grid Integration Fraunhofer Institute for Solar Energy Systems Freiburg Germany Advance R&d Sumida Components & Modules GmbH Germany Power Module Development Infineon Technologies Ag Warstein Germany Technical Marketing Infineon Technologies Ag Warstein Germany Business Excellence Infineon Technologies Ag Munich Germany Technology Development Infineon Technologies Ag Erlangen Germany

ISBN: (纸本)9798350364446

In this project, the power electronic system technology for future high-performance charging systems along highways or large inner-city electric charging stations with several MVA system sizes with reduced material demand is presented. The concept is based on a dC bus with 1.5 kV and corresponding high efficient power electronics to connect the vehicles to the dC grid. This approach leads to a cost-efficient system. Key components are an electrically isolated dC converter based on 2 kV SiC power modules and an inductive transformer with switching frequencies up to 50 kHz and an output power of 175 kW. © 2024 IEEE.

关键词： Fast charging (Batteries)

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development of high contrast EUV photoresist for narrow pitch C/H patterning 41

Development of high contrast EUV photoresist for narrow pitc...

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Advances in Patterning Materials and Processes XLI 2024

作者： Moon, Yonghoon do, Sungan Kim, Hana Kwon, Seungchul Park, Hoyoon Kang, Cheol Lee, Jae-Jun Ahn, Chanjae Androsov, dmitry Kim, Minsang Hong, Suk-Koo Material Development Team Semiconductor R&d Center Samsung Electronics Samsungjeonjaro 1-1 Gyeonggi-do Hwaseong-si Korea Republic of Material Research Center Samsung Advanced Institute of Technology Samsung Electronics Samsung-ro 130 Yeongtong-gu Gyeonggi-do Suwon-si Korea Republic of

ISBN: (纸本)9781510672208

The organic non-chemically amplified resist (non-CAr) materials have been developed for fine pitch contact hole patterning process to remove the acid blur of conventional chemically amplified resist (CAr) system, but non-CAr materials usually show lower contrast and sensitivity compared to conventional CAr materials, so additional improvements are needed for practical application. In this study, we developed new platforms of EUV PTd resist materials to overcome these limitations and enable fine pitch C/H patterning. The main target of our study is to reduce acid blur and to maintain chemical contrast compared to conventional CAr system by 1) finding better EUV-active structures, or 2) simultaneously generating polarity switching and molecular weight (M.W.) change, or 3) maximizing the M.W. change through the depolymerization. Those new resist materials have confirmed showing equivalent or higher contrast compared to conventional CAr, and also having good resolution in EUV C/H patterning evaluation. © COPYrIGHT SPIE. downloading of the abstract is permitted for personal use only.

关键词： Photoresists

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Enhancing Internet Connectivity in remote Areas of Malaysia using direct-to-device Satellite technology

Enhancing Internet Connectivity in Remote Areas of Malaysia ...

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Asia-Pacific Conference on Applied Electromagnetics, APACE

作者： Siti Maisurah Binti Mohd Hassan Azah Syafiah Binti Mohd Marzuki Mardeni Bin roslee COE for Intelligent Network Research & Innovation Development TM R&D Sdn. Bhd. Cyberjaya Malaysia COE for Intelligent Network Research & Innovation Development TM R&D Cyberjaya Cyberjaya Malaysia Centre for Wireless Technology COE for Intelligent Network Multimedia University Cyberjaya Malaysia

ISBN: (数字)9798350364163

ISBN: (纸本)9798350364170

The internet connectivity gap in Malaysia remains a challenge, especially in rural and remote areas with difficult terrain. This paper explores the feasibility of direct-to-device (d2d) satellite technology as a solution to extend coverage in these underserved regions. An overview of d2d technology is provided, discussing key technological approaches related to spectrum use and standards. The capabilities of d2d technology in meeting Malaysia’s specific requirements are analyzed. Supported by government initiatives and advancements in the industry, d2d satellite services could become a key driver in achieving 100% internet coverage in Malaysia’s populated areas.

关键词： Performance evaluation Satellite constellations Satellites Predictive models device-to-device communication Uplink Standards Wideband Testing Narrowband

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A feasible route to produce 1.1 GPa ferritic-based low-Mn lightweight steels with ductility of 47%

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Journal of Materials Science & technology 2022年第22期117卷 225-237页

作者： Kwang Kyu Ko Hyo Ju Bae Eun Hye Park Hyeon-Uk Jeong Hyoung Seok Park Jae Seok Jeong Jung Gi Kim Hyokyung Sung Nokeun Park Jae Bok Seol Department of Materials Engineering and Convergence Technology Center for K-metalGyeongsang National University(GNU)Jinju 52828South Korea School of Materials Science and Engineering Yeungnam UniversityGyeongbuk 38541South Korea Materials Research Team R&D Hyundai MobisYongin 16891South Korea Materials Technology Development Team Doosan Heavy Industries&ConstructionChangwon 51711South Korea

High- and medium-Mn (H/M-Mn) base lightweight steels are a class of ultrastrong structural materials with high ductility compared to their low-Mn counterparts with low strength and poor ***, producing these H/M-Mn materials requires the advanced or high-tech manufacturing techniques, which can unavoidably provoke labor and cost concerns. Herein, we have developed a facilestrategy that circumvents the strength–ductility trade-off in low-Mn ferritic lightweight steels, by employing low-temperature tempering-induced partitioning (LTP). This LTP treatment affords a typical Fe-2.8Mn-5.7Al-0.3C (wt.%) steel with a heterogeneous size-distribution of metastable austenite embeddedin a ferrite matrix for partitioning more carbon into smaller austenite grains than into the larger austenite ones. This size-dependent partitioning results in slip plane spacing modification and lattice strain,which act through dislocation engineering. We ascribe the simultaneous improvement in strength andtotal elongation to both the size-dependent dislocation movement in austenite grains and the controlleddeformation-induced martensitic transformation. The low-carbon-partitioned large austenite grains increase the strength and ductility as a consequence of the combined martensitic transformation andhigh dislocation density-induced hardening and by interface strengthening. Additionally, high-carbonpartitioned small austenite grains enhance the strength and ductility by planar dislocation glide (inthe low strain regime) and by cross-slipping and delayed martensitic transformation (in the high strainregime). The concept of size-dependent dislocation engineering may provide different pathways for developing a wide range of heterogeneous-structured low-Mn lightweight steels, suggesting that LTP maybe desirable for broad industrial applications at an economic cost.

关键词： Low-Mn lightweight steel Carbon partitioning Metastable austenite dislocation movement

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Intelligent direct-drive Top drive design of Synchronous Permanent Magnet Motor with Phase Change Heat dissipation

Intelligent Direct-Drive Top Drive Design of Synchronous Per...

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2023 SPE/IAdC Middle East drilling technology Conference and Exhibition, MEdT 2023

作者： Han, Haochen Wang, Bo Li, Bo Cheng, Tengfei Fengliu, Hui Zhang, Yao Chu, Fei CPET Beijing Petroleum Machinery Co. Ltd. Beijing China CNPC R&D DIFC Company Limited Dubai United Arab Emirates CPET Beijing KEMBL Petroleum Technology Development Co. Ltd. Beijing China

ISBN: (纸本)9781613999974

In drilling operation, drilling NPT caused by top drive mechanical failure and high noisy and energy suffered a lot onsite. This paper introduces a top drive which utilizes a permanent magnet synchronous AC motor to drive the quill directly without a gearbox which can shorten drive chain. Meanwhile, its symmetrical and compact mechanical construction and shorter main and control cables obviously improve installation efficiency and effectively reduce the failure rate. We conducted research through structural design, motor efficiency and heat dissipation, and automation system upgrades to form a set of high-efficiency, high-performance direct drive top drive. Transmission structure aspect: design of direct-drive top drive structure, calculation and verification of main load bearing parts, analysis of top drive failure types and effects. Motor energy efficiency aspect: research on speed measurement method of permanent magnet direct drive motor, precise control method of permanent magnet direct drive motor, and closed phase change heat dissipation technology. Automation enhancement aspect: research on control system architecture, self-diagnosis system, One-click operating system. This study resulted in three research findings including synchronous permanent magnet motor design, One-Click operating system with self-diagnosis and efficient self-circulation heat dissipation technology. The new generation of direct-drive top drive can reduce current required by 100-200A and increase efficiency by 20-30% compared with asynchronous motor, while meeting the requirements of corresponding rated load, rated power, speed and continuous torque. It can realize quill rotation precision less than 1° under load and keep the speed fluctuation reduced from 10.6% to 1.1% by improving the motor dynamic response performance. The One-click control method realized by preset parameters can reduce the driller's repeated operation and visual judgment. The tripping efficiency can be increased by

关键词： Permanent magnets

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Low Power Consumption using dynamic Cell Area Integration in 6G Mobile Networks 29

Low Power Consumption using Dynamic Cell Area Integration in...

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29th Opto-Electronics and Communications Conference, OECC 2024

作者： Saito, Hiroyuki Nakahira, Yoshihiro Kashima, Masayuki Sarashina, Masahiro Technology Division Oki Electric Industry Co. Ltd Research & Development Center Photonics R&d Department Saitama Warabi-shi Japan

Both increasing network capacity and low power consumption are required for 6G mobile networks. We propose a dynamic area integration method at the user side to reduce the power consumption. Using proposed method, 28.... 详细信息

ISBN: (纸本)9798350308396

关键词： Low power electronics

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research on the Calculation Method of CO2 Storage Volume and its Application in L reservoir

Research on the Calculation Method of CO2 Storage Volume and...

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2025 International Petroleum technology Conference, IPTC 2025

作者： Wu, Zangyuan Feng, Qihong Lian, Liming Meng, Xiangjuan Xu, YanLong Wang, Sen Wu, Kuankuan Zhou, Wei Luo, Min Li, Yang Fan, Jin Cheng, ronghong Wu, Mimi Huang, Xingning School of Petroleum Engineering China University of Petroleum East China China Tarim Oilfield Company PetroChina Korla China R&D Center for Ultra-Deep Complex Reservoir Exploration and Development CNPC Korla China Research Institute of Petroleum E&D Petrochina CNPC Beijing China Chengdu CK Energy Technology Co. Ltd. Chengdu China

ISBN: (纸本)9781959025436

This paper addresses the difficulty in calculating CO2 storage volume due to the complexity of CO2 occurrence states in the CCUS process. A method for calculating CO2 storage volume is proposed, designing well networks throughout the entire lifecycle of CCUS to meet the demands of both CO2 EOr and storage stages. This extends the implementation time of CO2 EOr to enhance oil recovery and ensures effective CO2 storage while maximizing oil production, aligning with the global strategy of green and low-carbon development. Initially assuming that the pore volume of produced hydrocarbons is completely occupied by CO2 and considering dissolution retention and mineral reaction retention, the theoretical carbon storage volume of the target reservoir is predicted to determine the upper limit of storage volume. Building on flash calculation, utilizing equations of state-activity models, equations of state-equations of state models, and chemical reaction kinetics models, model parameters were fitted and corrected through experiments on CO2 multiphase non-isothermal flow, dissolution, solid-phase deposition, and mineral reactions to develop a CO2 storage volume prediction model and proprietary software. Finally, reliability verification was conducted using analogous block comparison methods. The technology proposed in this paper has been applied in the integrated CO2 EOr and storage scheme for the L reservoir, predicting saturation fields, solubility fields, and various storage mechanisms during the CO2 flooding and storage process and providing three-dimensional field changes. results indicate that the theoretical carbon storage upper limit for the L reservoir is 9.88 million tons;under current reservoir temperature and pressure conditions, CO2 dissolution loss in formation connate water is 0.05 t/m3, and in residual oil it is 0.32 t/t, resulting in an effective storage volume of 7.47 million tons (with analogous block comparison results at 7.78 million tons, verifying the rel

关键词： Oil well flooding

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Low Power Consumption using dynamic Cell Area Integration in 6G Mobile Networks

Low Power Consumption using Dynamic Cell Area Integration in...

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OptoElectronics and Communications Conference, OECC

作者： Hiroyuki Saito Yoshihiro Nakahira Masayuki Kashima Masahiro Sarashina Photonics R&D Department Research & Development Center Technology Division Oki Electric Industry Co. Ltd Warabi-shi Saitama Japan

ISBN: (数字)9798350308396

ISBN: (纸本)9798350308402

关键词： 6G mobile communication Power demand System dynamics

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Fabrication of a Hydrophobic Hierarchical Surface on Shale Using Modified Nano-SiO_(2)for Strengthening the Wellbore Wall in drilling Engineering

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Engineering 2022年第4期8卷 101-110页

作者： Xianbin Huang Jinsheng Sun He Li ren Wang Kaihe Lv Haichao Li Key Laboratory of Unconventional Oil and Gas Development(China University of Petroleum(East China)) Ministry of EducationQingdao 266580China School of Petroleum Engineering China University of Petroleum(East China)Qingdao 266580China CNPC Engineering Technology R&D Co. Ltd.Beijing 102206China

Wellbore stability is essential for safe and efficient drilling during oil and gas exploration and *** paper introduces a hydrophobic nano-silica(HNS)for use in strengthening the wellbore wall when using a water-based drilling fluid(WBF).The wellbore-strengthening performance was studied using the linear swelling test,hot-rolling recovery test,and compressive strength *** mechanism of strengthening the wellbore wall was studied by means of experiments on the zeta potential,particle size,contact angle,and surface tension,and with the use of a scanning electron microscope(SEM).The surface free energy changes of the shale before and after HNS treatment were also calculated using the contact angle *** experimental results showed that HNS exhibited a good performance in inhibiting shale swelling and *** with the use of water,the use of HNS resulted in a 20%smaller linear swelling height of the bentonite pellets and an 11.53 times higher recovery of water-sensitive shale—a performance that exceeds those of the commonly used shale inhibitors KCl and *** importantly,the addition of HNS was effective in preventing a decrease in shale *** to the mechanism study,the good wellbore-strengthening performance of HNS can be attributed to three ***,the positively charged HNS balances parts of the negative charges of clay by means of electrostatic adsorption,thus inhibiting osmotic ***,HNS fabricates a lotus-leaf-like surface with a micro-nano hierarchical structure on shale after adsorption,which significantly increases the water contact angle of the shale surface and considerably reduces the surface free energy,thereby inhibiting surface ***,the decrease in capillary action and the effective plugging of the shale pores reduce the invasion of water and promote wellbore *** approach described herein may provide an avenue for inhibiting both the surface hydration and the os

关键词： Hydrophobic Nanoparticle Shale inhibitor drilling fluid Wellbore stability

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Performance and wear mechanisms of TiAlN-NbN coated cemented carbide in milling Ti6Al4V with different cooling and lubrication approaches

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Wear 2025年 571卷

作者： Lindvall, rebecka Casas Gayubo, Josu Gutnichenko, Oleksandr Auzenat, François M'Saoubi, rachid Bushlya, Volodymyr Division of Production and Materials Engineering Lund University Ole Römers Väg 1 Lund221 00 Sweden R&D Milling and Process Seco Tools France 22 Avenue de La Prospective Bourges18 000 France R&D Materials and Technology Development Seco Tools AB Fagersta737 82 Sweden

Titanium alloys are difficult-to-machine materials given their high strength, the high temperatures generated, and the naturally short contact length that combined result in rapid tool wear. different machining strategies can be employed to cope with the low machinability. This study investigates the machining performance using different cooling and lubrication methods during down face milling of the most employed Ti alloy Ti6Al4V. The conditions include a dry environment, flood coolant, and sustainable vegetable oil applied at minimum quantity lubrication (MQL) condition. The tool life at dry conditions and with MQL applied vegetable oil are similar but MQL shows promising potential in prolonging tool life. Flood coolant provided no beneficial effect and tool life was about 50 % shorter as to dry and MQL conditions. The tool wear evolution on as-worn tools and their cross-sections is studied in scanning electron microscope using X-ray energy-dispersive spectroscopy. The PVd applied TiAlN-NbN coated WC-12%Co tools are worn by mechanical fracturing which is additionally accelerated by the outward diffusion of C from WC and Co binder that facilitate WC grain pull-out. Oxidation of Co binder further weakens the tool material mechanically. © 2025 The Authors

关键词： Titanium alloys

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