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Annual IEEE Conference on Applied Power Electronics Conference and Exposition (APEC)

作者： Hideo Komo Michael rogers Mark Steiner Eric Motto Koichi Taguchi Chihiro Kawahara Junichi Nakashima Yasushige Mukunoki Seiichiro Inokuchi rei Yoneyama Semiconductor & Device Division Mitsubishi Electric US INC. Export PA USA Power Device Works Melco Semiconductor Engineering Corp. Fukuoka Japan Mitsubishi Electric Corpolation Advanced Technology R&D Center Amagasaki Japan Power Device Works Mistubishi Electric Corporation Fukuoka Japan Power Device Works Mitsubishi Electric Corpolation Fukuoka Japan

ISBN: (数字)9798331516116

ISBN: (纸本)9798331516123

Global vehicle electrification is accelerating to combat global warming. recently, Silicon Carbide (SiC) Metal-Oxide-Semiconductor Field-Effect Transistors (MOSFETs) are increasingly used in electric vehicle inverters for their low power loss at fast switching speeds compared to conventional Silicon Insulated Gate Bipolar Transistors (IGBTs). Although SiC MOSFETs are usually used in parallel to gain power, these fast-switching speeds can lead to gate voltage oscillations across paralleled SiC chips, potentially leading to failures such as gate drive malfunction and gate oxide breakdown. This paper addresses the oscillation caused by source voltage fluctuations and unbalanced gate drive circuit characteristics. We propose a method to mitigate these issues using a symmetrical module structure which equalizes stray inductance between modules.

关键词： MOSFET Inductance Voltage fluctuations Silicon carbide Multichip modules Logic gates Transistors Integrated circuit modeling Oscillators Switching circuits

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An Approximate High Gain Observer for Speed-sensorless Estimation of Induction Motors

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IEEE/CAA Journal of Automatica Sinica 2019年第1期6卷 53-63页

作者： Yebin Wang Lei Zhou Scott A.Bortoff Akira Satake Shinichi Furutani IEEE Mitsubishi Electric Research Laboratories the Department of Mechanical Engineering Massachusetts Institute of Technology the Advanced Technology R&D Center Mitsubishi Electric Corporation

rotor speed estimation for induction motors is a key problem in speed-sensorless motor drives. This paper performs nonlinear high gain observer design based on the full-order model of the induction motor. Such an effort appears nontrivial due to the fact that the full-model at best admits locally a non-triangular observable form(NTOF), and its analytical representation in the NTOF can not be obtained. This paper proposes an approximate high gain estimation algorithm, which enjoys a constructive design, ease of tuning, and improved speed estimation and tracking performance. Experiments demonstrate the effectiveness of the proposed algorithm.

关键词： Induction motor industrial applications nonlinear state estimation speed-sensorless motor drive

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ru Single Atoms and Sulfur Anions dual-doped NiFe Layered double Hydroxides for High-Current-density Alkaline Oxygen Evolution reaction

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Advanced Energy Materials 2025年第0期

作者： Zhu, Yiming Wang, Jiaao Weiser, Gregor Klingenhof, Malte Koketsu, Toshinari Liu, Shangheng Pi, Yecan Henkelman, Graeme Shi, Xinyue Li, Jiayi Pao, Chih-Wen Yeh, Min-Hsin Huang, Wei-Hsiang Strasser, Peter Ma, Jiwei Shanghai Key Laboratory for R&D and Application of Metallic Functional Materials Institute of New Energy for Vehicles School of Materials Science and Engineering Tongji University Shanghai201804 China Department of Chemistry and the Oden Institute for Computational Engineering and Sciences The University of Texas at Austin AustinTX78712-0165 United States Department of Chemistry Technische Universität Berlin Berlin10623 Germany State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering Xiamen University Xiamen361005 China School of Chemistry and Chemical Engineering Yangzhou University Jiangsu225002 China National Synchrotron Radiation Research Center Hsinchu300092 Taiwan Center Department of Chemical Engineering National Taiwan University of Science and Technology Taipei10607 Taiwan

New anodic electrocatalysts with high performance and cost-effectiveness at large current densities help advance the emerging anion exchange membrane water electrolyzer (AEMWE) technology. To this end, a ruthenium (ru) single atoms and sulfur (S) anions dual-doped NiFe layered double hydroxides (ru-S-NiFe LdH) catalyst is reported with remarkably low alkaline oxygen evolution reaction (OEr) overpotentials, high mass activities and prolonged stabilities at high current densities. Inspiringly, the AEMWE performance on ru-S-NiFe LdH is also superior to the NiFe LdH. In-depth mechanism investigations reveal that ru single atoms not only act as the highly active sites, but also facilitate the conductivity of NiFe LdH. Meanwhile, S anions accelerate the electrochemical reconstruction of NiFe LdH to OEr-active NiFeOOH and alleviate the over-oxidation issue on ru active sites. Benefiting from these, ru-S-NiFe LdH shows significantly enhanced OEr activity and stability. Theoretical calculations further validate the decreased OEr free energy difference brought about by the ru single atoms and S anions dual-doping. This study offers a proof-of-concept that the noble metal single atoms and anions dual-doping is a feasible strategy to construct the promising 3d transition metal-based electrocatalysts toward the practical alkaline water electrolyzer. © 2025 The Author(s). Advanced Energy Materials published by Wiley-VCH GmbH.

关键词： Cost effectiveness

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Effect of blade sweep on inlet flow in axial compressor cascades

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Chinese Journal of Aeronautics 2015年第1期28卷 103-111页

作者： Chang Hao Zhu Fang Jin donghai Gui Xingmin School of Energy and Power Engineering Beihang University Gas Turbine Technology Institute Shanghai Electric Power Generation R&D Center

This paper presents comparative numerical studies to investigate the effects of blade sweep on inlet flow in axial compressor cascades. A series of swept and straight cascades was modeled in order to obtain a general understanding of the inlet flow field that is induced by sweep.A computational fluid dynamics（CFd） package was used to simulate the cascades and obtain the required three-dimensional（3d） flow parameters. A circumferentially averaged method was introduced which provided the circumferential fluctuation（CF） terms in the momentum equation.A program for data reduction was conducted to obtain a circumferentially averaged flow *** influences of the inlet flow fields of the cascades were studied and spanwise distributions of each term in the momentum equation were analyzed. The results indicate that blade sweep does affect inlet radial equilibrium. The characteristic of radial fluid transfer is changed and thus influencing the axial velocity distributions. The inlet flow field varies mainly due to the combined effect of the radial pressure gradient and the CF component. The axial velocity varies consistently with the incidence variation induced by the sweep, as observed in the previous literature. In addition, factors that might influence the radial equilibrium such as blade camber angles, solidity and the effect of the distance from the leading edge are also taken into consideration and comparatively analyzed.

关键词： compressor blade inlet sweep axial radial straight averaged momentum consistently

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N-doped NaTaO3 synthesized from a hydrothermal method for photocatalytic water splitting under visible light irradiation

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Journal of Energy Chemistry 2017年第3期26卷 515-521页

作者： Che-Chia Hu Hui-Hsin Huang Yu-Chi Huang Department of Chemical Engineering and R&D Center for Membrane Technology Chung Yuan Christian UniversityTaoyuan City 32023TaiwanChina

NaTaONcatalysts were synthesized by a hydrothermal（H） and a solid-state（S） methods in this *** H-and S-NaTaONsamples were characterized by X-ray diffraction（Xrd）, scanning electron microscopy（SEM）, transmission electron microscopy（TEM）, UV–visible（UV–vis） diffuse reflectance spectroscopy, and photoluminescence（PL） spectroscopy. The Xrd patterns of the H-and S-samples showed peaks indexed to the pure phase of perovskite NaTaOand minor peaks assignable to TaNat various synthesis temperatures. Substitution of oxygen by nitrogen ions causes the light absorption of the H-and S-NaTaONsamples to be extended to the 600–650 nm region, thus making the samples visible-light active. The NaTaONsamples exhibited photocatalytic activity for Hand Oevolution from aqueous methanol and silver nitrate solutions under visible-light irradiation. The UV–vis and PL spectra of the Hand S-catalysts revealed the presence of cationic vacancies and reduced metallic species, which acted as recombination centers. These results demonstrated that the preparation method plays a critical role in the formation of defect states, thereby governing the photocatalytic activity of the NaTaONcatalysts.

关键词： Photocatalysis H2 production N-doped NaTaO3 Hydrothermal method Visible light

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Effect of Sous Vide Cooking technology on the Quality, Protein Structure, Microstructure, and Flavor of Yellowfin Tuna (Thunnus Albacares)

SSRN

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SSrN 2025年

作者： Yuan, Xuan Li, dongcheng Shi, Peiying Wu, Jiajia dai, Zhiyuan dong, Xiuping Lu, Yanbin National R&D Center for Marine Fish Processing Zhejiang Key Laboratory of Food Microbiology and Nutritional Health Institute of Seafood Zhejiang Gongshang University Hangzhou310018 China Zhejiang Ocean Family Co. Ltd. Youpinyuan Road No.1 Zhoushan316000 China SKL of Marine Food Processing & Safety Control National Engineering Research Center of Seafood School of Food Science and Technology Dalian Polytechnic University Dalian116034 China

The study investigated the comparative effects of sous vide cooking and traditional high-temperature cooking on the quality characteristics, protein structure, microstructure, and volatile flavor compounds of yellowfin tuna (Thunnus albacares). The sous vide treatment groups (55°C, 60°C, 65°C) exhibited a reduction in cooking loss, hardness, and chewiness of the fish while significantly preserving its original elasticity, cohesiveness, and color. In contrast, traditional high-temperature cooking alters the degradation of secondary and tertiary protein structures, resulting in muscle fiber contraction, damage to tissue integrity, and loss of internal moisture. Gas chromatography-mass spectrometry (GC-MS) analysis revealed that the concentration of primary odor compounds at a sous vide temperature of 55 °C is minimized. This reduction contributes to decreased formation of undesirable odor substances while positively influencing flavor profiles. These findings suggest that sous vide cooking technology can effectively enhance both the texture and flavor profile of yellowfin tuna. © 2025, The Authors. All rights reserved.

关键词： Gas chromatography

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dual-Polarized Microstrip Antenna with Cross Grid Structure radiating Towards the Edge of the Substrate in the d-Band

Dual-Polarized Microstrip Antenna with Cross Grid Structure ...

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European Conference on Antennas and Propagation, EuCAP

作者： ryosuke Hasaba Ken Takahashi Tomoki Abe Tomohiro Murata Yoichi Nakagawa Koji Takinami Hiroshi Taneda Takashi Tomura Issei Watanabe Engineering Division Panasonic Industry Co. Ltd. Yokohama Japan Development Center Panasonic System Networks R&D Lab. Co Kanazawa Japan Research & Development Div. Shinko Electric Industries Co. Ltd. Nagano Japan Department of Electrical and Electronic Engineering Institute of Science Tokyo Tokyo Japan Advanced ICT Research Institute National Institute of Information and Communications Technology Tokyo Japan

ISBN: (数字)9788831299107

ISBN: (纸本)9798350366327

This paper proposes a dual-polarized antenna for d-band applications, which radiates in the substrate end direction. The antenna's radiating elements and ground are formed using vias, via lands, and copper foil. The radiating element features a cross-grid design, which combines both cross and grid shapes. This allows for the adjustment of the resonant frequency for each polarization, even under manufacturing rule constraints. The characteristics and operation of a singleelement antenna were demonstrated through simulations. Subsequently, the gain of an 8-element array was compared between measured and calculated values, demonstrating the effectiveness of the proposed antenna.

关键词： Antenna measurements Shape resonant frequency Microstrip antennas directive antennas Gain measurement Manufacturing Microstrip Substrates Antenna arrays

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revealing the role of Topotactic Anion Exchange in the robust Zn Ion Storage of CuS1–xTex

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ACS Sustainable Chemistry & engineering 2025年第21期13卷 8164-8172页

作者： ruinan Chen Jinxin Li daohong Zhang Tong Zhou Hao Wu Qiufan Wang Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science Hubei R&D Center of Hyperbranched Polymers Synthesis and Applications South-Central Minzu University Wuhan 430074 China Hubei Key Laboratory of Energy Storage and Power Battery School of New Energy Hubei University of Automotive Technology Shiyan 442002 China Hubei Key Laboratory of Photoelectric Materials and Devices School of Materials Science and Engineering Hubei Normal University Huangshi 435002 China

rechargeable aqueous zinc-ion batteries (ZIBs) exhibit significant potential for next-generation energy storage technologies, yet their development is hindered by Zn metal anode challenges, such as dendrites and parasitic reactions. Herein, an anionic Te-substitution CuS (CuS1–xTex) is put forward as a promising conversion-type Zn-metal-free anode for aqueous ZIBs. The Te substitution tailors the electronic structure of CuS and enhances the conductivity. The synergistic effect endows the CuS1–xTexanode with a higher capacity up to 274 mA h g–1at 0.1 A g–1than that of pure CuS (100 mA h g–1). An aqueous “rocking-chair” CuS1–xTex//MnO2Zn-ion full battery is demonstrated, which provides a high specific capacity of 109 mA h g–1.

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Optimal center-of-Mass Pivot Effect of Spinal Motion in Feline Galloping

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Journal of Bionic engineering 2020年第5期17卷 970-977页

作者： Young Kook Kim dongwon Yun LV R&D team Electro-technology R&D CenterLS ELECTRIC Co.LtdCheongju 28437South Korea Department of Robotics Engineering Daegu Gyeongbuk Institute of Science and Technology(DGIST)Daegu 42988South Korea

In this paper,we studied the acceleration behavior of a quadruped animal during a galloping *** the development of many quadruped robotic systems has been focused on dynamic movements,it is obvious that guidance from the dynamic behavior of quadruped animals is needed for robotics *** fulfill this demand,this paper deals with analysis of the galloping motions of a domestic cat,which is well known for its excellent acceleration performance among four-legged *** on the planar motion capture environment,the movement data of a galloping feline was acquired and the dynamic motions were estimated using a spring-mass *** particular,the effects of the position and angle of the center-of-mass of the cat,angular displacement of the spine,and angular velocity of the spine were analyzed and are discussed *** this process,it was possible to understand the dynamic movement characteristics of the cat,and to understand the relationships between,and the influences of,these *** this analysis,we provide significant data applicable to the design of joint movements in quadruped robot systems.

关键词： quadrupedalism feline galloping domestic cat center-of-mass

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2,3,4-Trihydroxybenzophenone-induced cardiac and neurological toxicity: Heart-brain interaction mediated by regulation of pgam1a and pgk1 involved in glycolysis and gluconeogenesis in zebrafish

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Science of the Total Environment 2025年 974卷 179212页

作者： Xia, Lijie Stoika, rostyslav Li, Yuqing Zheng, Yuanteng Liu, Yanao Li, dong Liu, Kechun Zhang, Xiujun Shang, Xueliang Jin, Meng Shandong Province Jinan250103 China Engineering Research Center of Zebrafish Models for Human Diseases and Drug Screening of Jinan Shandong Province 250103 China School of Psychology and Mental Health North China University of Science and Technology Hebei Province Tangshan063210 China R&D Department Jinan Perfect Biological Technology Co. Ltd. Shandong Province Jinan250101 China Department of Regulation of Cell Proliferation and Apoptosis Institute of Cell Biology National Academy of Sciences of Ukraine Lviv Ukraine

2,3,4-trihydroxybenzophenone (2,3,4-THBP) is a benzophenone-type UV filter commonly used in sunscreens. However, the widespread application of BP-UV filters has led to an appearance of this chemical in the environment and living organisms. despite of this, there is poor understanding of the bio-toxicity of 2,3,4-THBP. Here, we investigated the adverse effects of 2,3,4-THBP in varying doses (115, 230, 460, 920, and 1840 μg/L) in zebrafish experimental model. Specifically, we assessed its impact on the cardio- and neuro-development, including pericardiac area, heart rate, as well as brain vessels and differentiation of dopaminergic and central nervous system (CNS) neurons. The expression of genes whose products are involved in cardio- and neuro-development was also monitored. It was found that 2,3,4-THBP caused heart failure (HF)-like symptoms in zebrafish embryos including pericardial edema, reduced heart rate, and yolk sac malformation. It also induced dramatic neurotoxicity, namely defective neuron differentiation, cerebrovascular loss, cognition and behavior defects. It disrupted the vascular system, leading to potentially toxic interactions between the heart and brain, further worsening the state of both organs. Notably, rNA-seq findings indicated that 2,3,4-THBP damaged the energy metabolic function via upregulating the expression of phosphoglycerate mutase 1a (pgam1a) and phosphoglycerate kinase 1 (pgk1) whose protein products are involved in regulation of glycolysis and gluconeogenesis, highlighting their role in the interplay between heart and brain. Summarizing, 2,3,4-THBP triggered cardiac and neurological toxicity, which is possibly associated with heart-brain interaction mediated by regulation of pgam1a and pgk1 involved in glycolysis and gluconeogenesis. © 2025 Elsevier B.V.

关键词： Gene expression

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