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International Conference on Control, Automation and Systems ( ICCAS)

作者： dong-Yoon Han Seungju Moon Gyu-won Kim Huibeom Youn Bo-goon Kim Jaepil Ban School of Electronic Engineering Kumoh National Institute of Technology Gumi South Korea R&D Center NUC Electronics Daegu South Korea

While rotor position estimation techniques have been extensively studied for position-sensorless control of switched reluctance motors (SrMs), the presence of actuator faults poses significant challenges in achieving accurate and reliable sensorless control performance. This paper proposes an actuator fault detection sliding mode observer (AFdSMO) for position-sensorless control of SrMs afflicted with failures in a motor drive. Specifically, we address the scenarios where a fault arise within the semiconductor switching devices of SrM drive, and we develop a dynamic model that describes an SrM control system with the fault. Then, we propose the AFdSMO that utilizes only phase current measurements to simultaneously estimate both the rotor position and faults. As a result, the proposed AFdSMO facilitates achieving position-sensorless control for SrMs in the presence of the actuator faults. Finally, simulation results illustrate the effectiveness of the proposed method in position-sensorless control compared to that of conventional strategies in the presence of actuator faults.

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Smart Monitoring System for Small-scale Wind Turbine Model

Smart Monitoring System for Small-scale Wind Turbine Model

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2022 IEEE International Conference on distributed Computing and Electrical Circuits and Electronics, ICdCECE 2022

作者： Sudharsan, G. Srinivasa Vishnupriyan, J. Anand, K. Vijay Chidambarathanu, K. Vel Tech Rangarajan Dr. Sagunthala R&d Institute of Science and Technology Department of Electronics and Communication Engineering Chennai India Chennai Institute of Technology Center for Energy Research Chennai India R.M.K. Engineering College Department of Electronics and Instrumentation Engineering Chennai India R.M.K. Engineering College Department of Computer Science and Business Systems Chennai India

ISBN: (纸本)9781665483162

The most pressing challenges in the development of fossil fuel energy resources are their high value and scarcity. Therefore, renewable energy achieved through the mismanagement of natural resources is one of the most important aspects defining the energy crisis. Solar, wind, geothermal and recurring event energy are examples of assets. The cost of wind turbines is much higher compared to diesel generators. Moreover, regular maintenance costs often account for up to one-twentieth of the total cost of a rotary engine. However, accidental failure of certain elements such as blades, gearboxes, supports, brake systems can lead to high costs. Identifying parts of a system with human resources or intelligent systems helps to stop and reduce serious failures. Therefore, a completely different condition monitoring system has been applied to wind turbines, providing a great opportunity to develop a large space for analysis in the fields of structural turbine condition monitoring and field condition monitoring systems. Assessing the health of critical system components can help you become more aware of failed components and reduce maintenance time and costs. By using a completely different kind of sensor for the rotary engine components and using the right control and data acquisition systems, a complex condition monitoring system is provided. © 2022 IEEE.

关键词： Wind turbines

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Scalable Fabrication of Integrated Covalent Organic Framework Membrane with Selective Ion Transport for Efficient Salinity Gradient Energy Harvesting

SSRN

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SSrN 2024年

作者： Sun, Xiaojun di, Mengting Gao, Li Jiang, Xiaobin ruan, Xuehua Yan, Xiaoming He, Gaohong State Key Laboratory of Fine Chemicals R&D Center of Membrane Science and Technology Dalian University of Technology Dalian116023 China School of Chemical Engineering Ocean and Life Dalian University of Technology Panjin124221 China

Interfacial polymerization (IP) is a promising approach for preparing covalent organic framework (COF) membranes in energy storage and conversion applications. However, it is a great challenge for traditional IP with water-organic phase to obtain pre-designable and robust COF membranes. Herein, a "one-pot" organic-organic IP/in situ integration approach, constructing three typical β-ketoenamine COF composite membranes with a maximum area of >600 cm2, are reported. The dual organic phases exhibit comprehensive solubility to precursors, facilitating the synthesis of more types of COFs. In this "one-pot" approach, the porous supporting substrate is in situ formed underneath the COF layer via variable-temperature evaporation of two organic solutions without transfer process. It makes some substrate polymers embedded into the COF layer and accomplishes the interlock of two layers at the interface, producing a robust composite membrane. The prepared COF composite membrane exhibits effective sieving capability for Na+/Mg2+ and achieves a maximum power density of over 1 W m−2 in the reverse electrodialysis power generation, even using the Na+/Mg2+ mixed solution. This approach allows for preferably customization of membrane structures, which can expand the applications of COF membranes in separation. © 2024, The Authors. All rights reserved.

关键词： Energy harvesting

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A distributive Hybrid Cell Balancing Technique for Series-Connected Lithium-Ion Cells

A Distributive Hybrid Cell Balancing Technique for Series-Co...

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Emerging Trends in Electrical, Control, and Telecommunication engineering (ETECTE), International Conference on

作者： Syed Ali Imran Syed Najeeb Ali Kazmi Huzaifa Sakandar Abasin Ulasyar Alishba Khalid Electrical Engineering Department University of Engineering & Technology Taxila Pakistan School of Engineering & Built Environment Griffith University Gold Coast Australia Drivr Team Washing Machine-R&D Center Beko Istanbul Türkiye

ISBN: (数字)9798331504861

ISBN: (纸本)9798331504878

As the demand for high energy density batteries has surged due to their use in transportation electrification and energy storage systems (ESS), the role of battery management systems (BMS) has become even more critical. Individual cells in a battery pack can develop imbalances in their state of charge (SOC) during charge/discharge operations, which in turn can diminish battery pack's ability to operate at its rated capacity. Therefore, cell balancing that ensures optimal performance of a battery pack becomes a critical function of the BMS. In this study, a distributive hybrid cell balancing technique is presented which incorporates both passive and active balancing strategies for optimal cell balancing based on the difference in SOC among the cells. The proposed method is designed to address imbalance in SOC more effectively and in a shorter duration compared to conventional inductor based active balancing and resistors based passive balancing. Simulations were run to validate the performance of the proposed technique during three different modes of battery operation: idle, charging, and discharging. Furthermore, a hardware prototype was also developed for practical demonstration of the proposed hybrid technique.

关键词： resistors Battery management systems Transportation Prototypes Machine learning Pulse width modulation Market research Hardware Batteries State of charge

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Study on a novel liquid air energy storage system integrated with single-column air separation unit

Study on a novel liquid air energy storage system integrated...

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New Energy and Power engineering (ICNEPE), International Conference on

作者： Ningzhi Li Chaoyu Zhang Haochen Zhang Jiahua Zhu Jiayi Lu Beiyuan Zhang Peng Hu Jiangzhe Feng Equipment Technology Center Electrical Control Department National Energy Wind Power Operation Technology R&D Center Longyuan (Beijing) New Energy Engineering Technology Co.Ltd Beijing China Science and Technology Department National Energy Wind Power Operation Technology R&D Center Longyuan (Beijing) New Energy Engineering Technology Co.Ltd Beijing China Electrical Control Department Longyuan (Beijing) Equipment Technology Center New Energy Engineering Technology Co.Ltd Beijing China School of Energy Power and Mechanical Engineering North China Electric Power University Beijing China Longyuan (Beijing) New Energy Engineering Technology Co. Ltd Beijing China

ISBN: (数字)9798331516086

ISBN: (纸本)9798331516093

Liquid Air Energy Storage (LAES) has emerged as a promising solution for large-scale energy storage. However, current LAES systems face challenges related to high costs. Integrating air separation units (ASUs) with LAES offers the potential to balance grid demand and enhance production efficiency by sharing purification and liquid air storage equipment. This paper presents a LAES system coupled with a single-tower ASU, which is evaluated through steady-state simulation and exergy loss analysis. The system achieves an overall energy efficiency of 38.38%, with the LAES subsystem reaching 46.76% efficiency, and the air separation process consuming 3.39 kg/kWh. Additionally, the influence of the liquid-air split ratio on system performance is analyzed.

关键词： Couplings Liquids Costs System performance Liquid nitrogen raw materials Steady-state Nitrogen Separation processes Energy storage

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Securing the digital Frontier: An Analysis of Cybersecurity Strategies and Obstacles

Securing the Digital Frontier: An Analysis of Cybersecurity ...

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2025 IEEE International Conference on Computational, Communication and Information technology, ICCCIT 2025

作者： Saravanan, V. Indumathi, G.S. James, Sathish Kumar Pandi, V. Samuthira Shakila, J. Banumathi, S. Saveetha School of Engineering Saveetha Institute of Medical and Technical Sciences Saveetha University Department of Nano Electronics Materials and Sensors Tamil Nadu Chennai India St Joseph's College of Engineering OMR Department of MBA Chennai India BNY Mellon Center PittsburghPA15219 United States Chennai Institute of Technology Centre for Advanced Wireless Integrated Technology Tamil Nadu Chennai India Jeppiaar Engineering College Rajiv Gandhi Salai Department of CSE Chennai India Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology Department of Computer Science India

ISBN: (纸本)9798331512965

In an era where digital connectivity is ubiquitous, the imperative to safeguard cyberspace has never been more pressing. This research delves into the multifaceted landscape of cybersecurity, examining the strategies employed by governments, businesses, and individuals to protect sensitive information and critical infrastructure from cyber threats. By leveraging a mixed-methods approach, which includes a review of existing literature, case studies, and expert interviews, the research provides a nuanced understanding of the cybersecurity ecosystem. Key findings reveal that while technological advancements have bolstered defense mechanisms, including sophisticated malware, advanced persistent threats (APTs), and insider threats, continues to outpace traditional security measures. Moreover, the study underscores the critical role of human factors, such as user error and inadequate training, as significant vulnerabilities. The research concludes with a set of recommendations aimed at enhancing cybersecurity posture, including the adoption of a proactive, adaptive defense strategy, increased investment in cybersecurity education and awareness, and the fostering of international cooperation to combat transnational cybercrime. The insights gleaned from this analysis are intended to inform policymakers, industry leaders, and cybersecurity professionals, equipping them with the knowledge to fortify the digital frontier against evolving threats. © 2025 IEEE.

关键词： Cyber attacks

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Machine parameters of flux-modulating hybrid field motors

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IEEJ Transactions on Industry Applications 2021年第5期141卷 431-437页

作者： Hongo, Kazuki Fukami, Tadashi Koyama, Masato Mitsuda, Hiroshi Ito, Kazumasa Department of Electrical and Electronic Engineering College of Engineering Kanazawa Institute of Technology 7-1 Ogigaoka Nonoichi921-8501 Japan Advanced Technology R&D Center Mitsubishi Electric Corp. 8-1-1 Tsukaguchi-Honmachi Amagasaki661-8661 Japan

In this study, we investigated the effect of the relative position of two stators, with relative angle α, on the machine parameters of flux-modulating hybrid field motors (FHMs). The FHMs are a new type of axial gap motors in which one rotor incorporating iron pieces is sandwiched between two stators, the armature, and the field poles. To consider the magnetic saturation and d-q axis cross-coupling, the machine parameters were calculated using a self-inductance model with current dependencies. From the results of this investigation, we observed the following: 1) The d-axis flux linkage due to the field poles was the highest when the value of α was maximized. 2) The α has an insignificant effect on the d- and q-axis self-inductances. These findings are useful for future designs of FHMs and their control systems. © 2021 The Institute of Electrical Engineers of Japan.

关键词： Synchronous motors

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Past and Future Practical Solutions for Torsional Vibration damping in Vehicle Industry

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Periodica Polytechnica Transportation engineering 2022年第4期50卷 318-329页

作者： Venczel, Márk Veress, Árpád Peredy, Zoltán Department of Aeronautics and Naval Architecture Faculty of Transportation Engineering and Vehicle Engineering Budapest University of Technology and Economics Műegyetem rkp. 3. BudapestH-1111 Hungary Engineering Calculations Team Knorr-Bremse Brake Systems Ltd. R&D Center Budapest Major utca 69. BudapestH-1119 Hungary Engineering Institute Edutus University Stúdium tér 1. TatabányaH-2800 Hungary

In addition to material and production costs, consumption and emission limits, the requirements for performance, efficiency and space utilization must be met when it comes to the design of today's internal combustion engines for the automotive industry. As a result, three new design trends have been emerged (based on J. Pfleghaar and B. Lohmann's paper in 2013): 1. downsizing: reduction of engine size (number of pistons and stroke) for fuel and space-saving and CO2 emission reduction purposes, 2. downspeeding: reduction of engine speed to save fuel, which necessarily entails significantly higher torques being generated and transmitted in the engine, 3. turbo supercharging: increasing the pressure and compression ratio in the engine piston cylinder to cover the increased torque demand, which is accompanied by NOx gas emissions. due to these new design trends, significant transverse, axial, and torsional oscillations can occur on the engine's crankshaft. To avoid power loss and fatigue due to the torsional oscillations, a torsional vibration damper is advised to be installed on the free end of the crankshaft or integrated into the flywheel. This review paper focuses on the possible reasons for torsional vibrations, the applied methods used to dampen them, and expected future trends. © 2022 Budapest University of technology and Economics. All rights reserved.

关键词： Gas emissions

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Flux-Modulating Hybrid-Field Consequent Pole Motor

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IEEJ Transactions on Industry Applications 2021年第11期141卷 921-928页

作者： Mitsuda, Hiroshi Ito, Kazumasa Fukami, Tadashi Koyama, Masato Advanced Technology R&D Center Mitsubishi Electric Corporation 8-1-1 Tsukaguchi-Honmachi Amagasaki661-8661 Japan Graduate School of Engineering Kanazawa Institute of Technology 7-1 Ohgigaoka Nonoichi921-8501 Japan

In this paper, a new type of axial gap motor, named the "flux-modulating hybrid-field consequent pole motor (FHCM)", is proposed. To enable flux modulation, the FHCM comprises rotor iron pieces sandwiched between two stators, the armature, and field poles. The field poles comprise permanent magnet poles, iron poles, and ring field windings. The magnetic flux of the field poles can be adjusted by varying the field current. The electromagnetic performance of the FHCM, including the air-gap magnetic flux density, back-electromotive force, torque, and torque ripple, was theoretically analyzed, and the results were verified through three-dimensional finite element analysis and experiments. By utilizing the inner space of the machine, the proposed FHCM could achieve a higher torque density than that of the conventional flux-modulating hybrid field motor. © 2021 The Institute of Electrical Engineers of Japan.

关键词： Synchronous motors

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Modeling of the Anisotropic Evolution of Yield Surface Based on Non-associated Flow rule 1

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12th International Conference and Workshop on Numerical Simulation of 3d Sheet Metal Forming Processes, NUMISHEET 2022

作者： Park, Namsu Bae, Gihyun Song, Jung Han Lee, Jong Sup Stoughton, Thomas B. Yoon, Jeong Whan Metal Forming Technology R&D Group Korea Institute of Industrial Technology 156 Gaetbeol-ro Yeonsu-gu Incheon21999 Korea Republic of Manufacturing Systems Research Lab General Motors R&D Center WarrenMI United States School of Engineering Deakin University Geelong Waurn PondsVIC3220 Australia School of Mechanical Aerospace and Systems Engineering KAIST 291 Daehak-ro Yuseong-gu Daejeon34141 Korea Republic of

ISBN: (数字)9783031062124

ISBN: (纸本)9783031062117

This work is concerned with a new approach for modeling of a yield function that is able to describe the anisotropic hardening considering general loading directions. A new model explicitly integrates eight flow stress curves including the strain hardening response under balanced-biaxial stress state into the yield criterion in a closed-form solution, which makes it possible to deal with the anisotropy-induced distortional yielding behavior as implied in experimental tests. The new approach accordingly induces relatively small systemic errors in stresses in different loading directions compared to conventional hardening models considering the low and high levels of plastic deformation, which will lead to a significant improvement in the accuracy of numerical analyses for sheet metal forming processes. © 2022, The Minerals, Metals & Materials Society.

关键词： Strain hardening

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