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3rd IEEE International Conference on Industrial Electronics: developments and Applications, ICIdeA 2025

作者： Siva Madhulatha, r. Vinod, B. Pasupulati, Baburao Amosedinakaran, S. rajakumar, P. Sudhakiran, Ponnuru Physics H&BS department Andhra Pradesh 533437 India Chennai Institute of Technology Center for Advanced Multidisciplinary Research and Innovation Tamilnadu Chennai India R&D Institute of Science and Technology Vel Tech Rangarajan Dr.Sagunthala Department of EEE Tamilnadu Chennai India New Horizon College of Engineering ECE Department Bengaluru India

ISBN: (纸本)9798331533205

developing novel dielectric materials has always been an exciting area in material research, owing to their importance, especially in the electrical and electronic industries. Materials play an essential role in every walk of life. Extracting materials from nature, processing and understanding their characteristics, and using them proficiently are living skills. It focuses on utilizing polytetrafluoroethylene (PTFE) as a matrix with varying different weight fractions of banana leaves (BL) and sugarcane bagasse (SCB) to improve capacitive energy storage and reduction of material weight. An attempt was made to choose a 10% tantalum pentoxide (Ta2O5) filler as secondary reinforcement, which was found to have a high dielectric constant and good compatibility with the existing fabrication procedure. Therefore, this work has focused on elucidating various aspects of the dielectric behavior and has been carried out on lightweight materials with high dielectric constants and low leakage currents for memory devices. The PTFE/6%(BL-SCB)/5% Ta2O5 has a high tensile strength of 46.78 MPa and improves electrical resistivity of 3.235 volts. Hence, this type of material has potential applications in producing dielectric devices like capacitors, actuators, and environmentally friendly solutions. © 2025 IEEE.

关键词： Electronics industry

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reliability-Based Sizing of Electric Propulsion System for Turboelectric Aircraft 49

Reliability-Based Sizing of Electric Propulsion System for T...

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49th Annual Conference of the IEEE Industrial Electronics Society, IECON 2023

作者： Wang, Yebin Lin, Chung-Wei Fang, Huazhen Takegami, Tomoki Mitsubishi Electric Research Laboratories CambridgeMA02139 United States University of Kansas Department of Mechanical Engineering LawrenceKS66045 United States Advanced Technology R&d Center Mitsubishi Electric Corporation Amagasaki City Japan

ISBN: (纸本)9798350331820

Aviation industry is moving towards more electric aircraft, where both non-propulsive and propulsive loads are electrified. While bringing in various benefits, electric propulsion system (EPS) introduces extra complexity and weight to aircraft, as well as raises the reliability concern. New design and analysis tools are required to size the EPS while meeting stringent reliability requirements. This paper investigates how to consolidate readability into the EPS sizing process and makes two-fold contributions. First, a probabilistic algorithm is proposed to assess the reliability of the EPS admitting a directed acyclic graph topology. The algorithm reduces the directed acyclic graph to a layered tree, which simplifies the calculation of joint probability of nodes in each layer. Second, we formulate the reliability-based EPS sizing as an integer nonlinear programming problem, where the reliability requirements are posed as constraints. Preliminary simulation validates the proposed method. © 2023 IEEE.

关键词： Trees (mathematics)

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Mutual Self‑regulation of d‑Electrons of Single Atoms and Adjacent Nanoparticles for Bifunctional Oxygen Electrocatalysis and rechargeable Zinc‑Air Batteries

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Nano-Micro Letters 2023年第4期15卷 40-57页

作者： Sundaram Chandrasekaran rong Hu Lei Yao Lijun Sui Yongping Liu Amor Abdelkader Yongliang Li Xiangzhong ren Libo deng College of Chemistry and Environmental Engineering Shenzhen UniversityShenzhen 518060People’s Republic of China College of Chemistry and Bioengineering Guilin University of TechnologyGuilin 541004People’s Republic of China Shenzhen Key Laboratory of Special Functional Materials Shenzhen Engineering Laboratory for Advanced Technology of CeramicsCollege of Materials Science and EngineeringGuangdong Research Center for Interfacial Engineering of Functional MaterialsShenzhen UniversityShenzhen 518060People’s Republic of China Shanghai Key Laboratory for R&D and Application of Metallic Functional Materials Institute of New Energy for VehiclesSchool of Materials Science and EngineeringTongji UniversityShanghai 201804People’s Republic of China Department of Design and Engineering Faculty of Science&TechnologyBournemouth UniversityPoole BH125BBDorsetUK

rechargeable zinc-air batteries(ZABs)are a promising energy conversion device,which rely critically on electrocatalysts to accelerate their rate-determining reactions such as oxygen reduction(Orr)and oxygen evolution reactions(OEr).Herein,we fabricate a range of bifunctional M-N-C(metal-nitrogen-carbon)catalysts containing M-Nx coordination sites and M/MxC nanoparticles(M=Co,Fe,and Cu)using a new class ofγ-cyclodextrin(Cd)based metal-organic framework as the *** the two types of active sites interacting with each other in the catalysts,the obtained Fe@C-FeNC and Co@C-CoNC display superior alkaline Orr activity in terms of low half-wave(E1/2)potential(~0.917 and 0.906 V,respectively),which are higher than Cu@C-CuNC(~0.829 V)and the commercial Pt/C(~0.861 V).As a bifunctional electrocatalyst,the Co@C-CoNC exhibits the best performance,showing a bifunctional Orr/OEr overpotential(ΔE)of~0.732 V,which is much lower than that of Fe@C-FeNC(~0.831 V)and Cu@C-CuNC(~1.411 V),as well as most of the robust bifunctional electrocatalysts reported to *** X-ray absorption spectroscopy and density functional theory simulations reveal that the strong electronic correlation between metallic Co nanoparticles and the atomic Co-N4 sites in the Co@C-CoNC catalyst can increase the d-electron density near the Fermi level and thus effectively optimize the adsorption/desorption of intermediates in Orr/OEr,resulting in an enhanced bifunctional electrocatalytic *** Co@C-CoNC-based rechargeable ZAB exhibited a maximum power density of 162.80 mW cm^(−2) at 270.30 mA cm^(−2),higher than the combination of commercial Pt/C+ruO2(~158.90 mW cm^(−2) at 265.80 mA cm^(−2))*** the galvanostatic discharge at 10 mA cm^(−2),the ZAB delivered an almost stable discharge voltage of 1.2 V for~140 h,signifying the virtue of excellent bifunctional Orr/OEr electrocatalytic activity.

关键词： Cyclodextrin Cd-MOF Single-atom catalyst Orr/OEr Zinc-air battery

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Largesignal Model for diamond FET with Trapping Effects Under High-Voltage Operation

Largesignal Model for Diamond FET with Trapping Effects Unde...

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Asia-Pacific Conference on Microwave

作者： Ken Kudara Yuji Komatsuzaki Yutaro Yamaguchi Shintaro Shinjo Masakazu Arai Hiroshi Kawarada Information Technology R&D Center and Faculty of Science and Engineering Mitsubishi Electric Corporation Waseda University Kamakura Kanagawa Japan Information Technolog R&D Center Mitsubishi Electric Corporation Kamakura Kanagawa Japan Faculty of Science and Engineering Waseda University Shinjuku Tokyo Japan

ISBN: (数字)9798350363548

ISBN: (纸本)9798350363555

This study demonstrates the largesignal model of a diamond metal-oxide-semiconductor field-effect transistor (FET) with a two-dimensional hole gas, using atomic-Iayer-deposition-Ahfb during high-voltage operation. The largesignal model incorporates the Angelov model, addressing trapping effects on source resistance $(r_{\mathrm{S}})$ and drain resistance $(r_{\mathrm{d}})$ during largesignal operations, marking a first time in diamond FETs research to handle the trapping effect. Moreover, different values of $r_{\mathrm{s}}$ and $r_{\mathrm{d}}$ were used between dc and small-signal analyses to optimize maximum stable gain and maximum available gain extracted from small-signal characteristics. Consequently, good agreement is observed, especially with a 0.12 dB maximum gain difference during the power sweep. Moreover, the proposed model shows maximum deviations of 0.1 dB in maximum output power and 0.8 % in maximum drain-efficiency compared to measurements, whereas the conventional model exhibits deviations of 1.6 dB and 11.1 %, respectively. These findings highlight the efficacy of the proposed model in designing microwave diamond amplifiers.

关键词： Semiconductor device modeling Two dimensional hole gas resistance MOSFET Semiconductor device measurement Microwave FETs High-voltage techniques diamond Microwave amplifiers Gain

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Surface Ligand Evolution:Sulfur-directed Covalent Bonding of PPh_(3) on Pd_(4)S with Improved Semi-hydrogenation of Terminal Alkynes

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Precision Chemistry 2024年第5期2卷 200-207页

作者： Wentong Jing Shiguang Mo Weijie Zhang Wenting Zhou Kunlong Liu Jie Wei ruixuan Qin Nanfeng Zheng New Cornerstone Science Laboratory State Key Laboratory for Physical Chemistry of Solid SurfacesCollaborative Innovation Center of Chemistry for Energy Materialsand National&Local Joint Engineering Research Center of Preparation Technology of NanomaterialsCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China China Resources Cement Technology R&D(Guangxi)Co Ltd. Nanning 530008China Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province(IKKEM) Xiamen 361102China

Surface modification of metallic nanocatalysts with organic ligands has emerged as an effective strategy to enhance catalytic selectivity,although offten at the expense of catalytic *** this study,we demonstrate a compelling approach by surface modifying Pd2S nanocrystals with PPhz ligands,resulting in a catalyst with excellent catalytic activity and durable selectivity for the semi-hydrogenation of terminal *** and theoretical investigations reveal that the presence of S sites on the Pd surface directs PPh_(3) ligands to preferentially form covalent bonds with S,creating distinctive surface S=PPh_(3) *** configuration induces a partial positive charge on Pd,facilitating hydrogen transfer and thus promoting catalytic ***,the covalent bond between the ligand and catalyst surface forms a robust network,ensuring ligand stability and increasing the hydrogenation energy barrier of ***,the Pd_(4)S@PPhz catalyst exhibits an improved catalytic selectivity with durability in terminal alkyne *** study introduces an effective strategy for designing selective hydrogenation catalysts with an enhanced performance.

关键词： Pd nanocatalysts surface modification selective hydrogenation catalytic stability alkyne semi-hydrogenation

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Low Switching Frequency Motor drive Using All Switching Patterns Search based direct Torque Control

Low Switching Frequency Motor Drive Using All Switching Patt...

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Annual Conference of Industrial Electronics Society

作者： Haru Hayashi Yuki Yokokura Kiyoshi Ohishi Yuto Kobayashi Tenjiro Hiwatari Akira Satake Department of Electrical Electronics and Information Engineering Nagaoka University of Technology Nagaoka Japan Advanced Technology R&D Center Mitubishi Electric Corporation Amagasaki Japan

ISBN: (数字)9781665464543

ISBN: (纸本)9781665464550

This paper focuses on voltage-integral-based reference tracking modulation (VIrTM) and direct torque control (dTC), proposing the control strategy that minimizes switching frequency while achieving excellent dynamic performance. In the proposed scheme, the optimal voltage integral trajectory calculated by exhaustively searching all switching patterns in an offline process is applied to the dTC. One of the advantages of the proposed scheme is its superior versatility and robustness, as it does not rely on motor parameters. Secondly, it significantly reduces the switching frequency at all operating points while preserving the dynamic characteristics of dTC. The effectiveness of the proposed scheme has been validated through experiments, demonstrating up to a 28% reduction in switching frequency compared to conventional standard dTC.

关键词： Switching frequency Torque control Modulation Switches Motors Vectors Trajectory Steady-state Voltage control Standards

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Efficiency and Linearity Enhanced Three Way doherty Power Amplifier with digital Adaptive Bias Control

Efficiency and Linearity Enhanced Three Way Doherty Power Am...

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Asia-Pacific Conference on Microwave

作者： Takuma Torii Akihito Hirai Shintaro Shinio Koji Yamanaka Chenhao Chu Hua Wang Information Technology R&D Center Mitsubishi Electric Corporation Kamakura Kanagawa Japan Department of Information Technology and Electrical Engineering ETH Zurich Zurich Switzerland

ISBN: (数字)9798350363548

ISBN: (纸本)9798350363555

This article presents a CMOS integrated three-way doherty power amplifier for future 6G Fr3 applications. It utilizes a low-loss three-way doherty combiner and digital adaptive bias control. The low loss doherty combiner and the digital adaptive bias control improve both efficiency and linearity. The fabricated three-way doherty power amplifier demonstrates output power of 24dBm and power added efficiency (PAE) of 33.6% at 11GHz. Furthermore, it achieves an output power of 12.6dBm, PAE of 20.1%, and error vector magnitude (EVM) of 6.9% with a 64QAM signal.

关键词： 6G mobile communication Microwave measurement Power measurement Power amplifiers Linearity Prototypes Microwave circuits Vectors Microwave amplifiers Power generation

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Maximum Torque Per Ampere Operation for IPMSM Based on Sliding-Mode Extremum Seeking Control

Maximum Torque Per Ampere Operation for IPMSM Based on Slidi...

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IEEE PES Asia-Pacific Power and Energy engineering Conference (APPEEC)

作者： Xiang Wu Yuyang Zhang Cancan Ning Shuo Chen Zhixun Ma School of Electrical Engineering China University of Mining and Technology Xuzhou China National Maglev Transportation Engineering R&D Center Tongji University Shanghai China

ISBN: (数字)9798350386127

ISBN: (纸本)9798350386134

Aiming at the problem of poor robustness of model-based maximum torque per ampere (MTPA) algorithm, a sliding mode extremum search control based MTPA (SMESC-MTPA) method with d-axis current as search variables is proposed. SMESC-MTPA does not require either sinusoidal excitation signal or high-pass and low-pass filters to estimate the function gradient. Based on Lyapunov criterion, the stability of SMESC-MTPA is analyzed, and the convergence speed and control accuracy of the proposed algorithm are studied by analyzing the formation and switching process of sliding mode surface. The effectiveness of the proposed method is verified by simulation and experiment.

关键词： Torque Accuracy Stability criteria Low-pass filters Process control Switches Search problems robustness Surface treatment Convergence

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Control, Modeling and Stability Analysis of drU-based Grid-forming Converter

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Chinese Journal of Electrical engineering 2025年第1期11卷 83-92页

作者： Wencong Wu Minzhi Wang Liang Tu Haiqing Cai Guanglei Yan Xiaohui Qu Haohan Gu Wei Chen State Key Laboratory of HVDC China Southern Power GridGuangzhou 510663China National Energy Power Grid Technology R&D Center Guangzhou 510663China Guangdong Provincial Key Laboratory of Intelligent Operation and Control for New Energy Power Systems China Southern Power GridGuangzhou 510663China CSG Key Laboratory for Power System Simulation China Southern Power GridGuangzhou 510663China School of Electrical Engineering Southeast UniversityNanjing 210096China

diode rectifier unit(drU)-based high-voltage direct current(HVdC)transmissionsystems areeffectivein achieving the stableandeconomical operation of offshore *** theuncontrollable characteristicsof drUs,a grid-forming(GFM)strategy forwind-turbine converters isnecessary to support offshore AC voltageand ***,the active power-synchronization control in traditional GFM converters is unsuitable for drU-based GFM ***,the stability issue for drU-based HVdC systems involving drU-based GFM and grid-following(GFL)converters has not yet been *** solve these issues,this study begins with the characteristics of a drU-based HVdC system and presents a control scheme for drU-based GFM converters for power ***,the dq-frame impedance model of the drU-based GFM converteris proposed for the stability analysis of the entire HVdC ***,a simulation platform is built to verify the model accuracy and system stability.

关键词： diode rectifier unit offshore wind-powergeneration grid-forming converter impedance model stabilityanalysis

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An On-Line Inductance Identification Method for Permanent Magnet Synchronous Motors Under Sensorless Control in The Full Speed domain 10

An On-Line Inductance Identification Method for Permanent Ma...

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10th IEEE International Power Electronics and Motion Control Conference, IPEMC 2024 ECCE Asia

作者： Liu, Yue Wang, Liguo Gao, Qiang Li, Yong Fei, E. Shanghai Jiao Tong University Department of Electrical Engineering Shanghai China State Grid Suzhou Power Supply Company Substation Maintenance Center Suzhou China Contemporary Amperex Electric Vessel Technology Co. Limited Department of R&d Ningde China Contemporary Amperex Electric Vessel Technology Co. Limited Department of Technology Ningde China

ISBN: (纸本)9798350351330

This work presents an online inductance identification method for permanent magnet synchronous motors in the full speed domain. Online inductance estimation is realized by injecting two modified high-frequency square wave voltage signals into the d-q axis simultaneously. This method can achieve high-precision identification of inductance in the full sensorless speed domain. The simulation results show that the inductance identification accuracy of this method can reach ±4% whether under constant loading, sudden addition and subtraction loading or dynamic loading. © 2024 IEEE.

关键词： Inductance

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