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7th International Conference on Information Technologies in engineering Education, Inforino 2024

作者： Fedotov, Gennady V. Zakharova, Ludmila V. Alymova, Olga V. National Research University 'MPEI' Department of Applied Mathematics and Artificial Intelligence Power Engineering Design Department Moscow Russia National Research University 'MPEI' Power Engineering Design Department Moscow Russia

ISBN: (纸本)9798350371369

Computer-aided design technologies have become dominant in the industrial, technological and household spheres. Computer-aided design systems (CAD) represent an important link in industrial design, widely used in many industries, including energy. Computer graphics based on computer platforms (nanoCAD, AutoCAD, Kompas 3D, T-FLEX CAD, etc.) actively replaces pencil design in universities. The complete transition to computer-based learning is associated with a radical change in teaching technology and requires teachers to restructure a number of existing developments, and a system of work evaluating, fixing comments and marks [1-7]. The authors of this publication summarize their experience of a complete transition to computer training in the course "engineering and computer Graphics". © 2024 IEEE.

关键词： Teaching

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PED department Schedule Preparation Automation 7

PED Department Schedule Preparation Automation

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7th International Conference on Information Technologies in engineering Education, Inforino 2024

作者： Pleshanov, K.A. Davydkina, T.V. Fedotov, G.V. National Research University 'MPEI' Power Engineering Design Department Moscow Russia National Research University 'MPEI' Department of Applied Mathematics and Artificial Intelligence Power Engineering Design Department Moscow Russia

Implemented partial automation of the processes of distributing the academic load of the general education department of a large university and scheduling classes, as well as interactive correction of these documents ... 详细信息

ISBN: (纸本)9798350371369

关键词： class schedule database (DB) lecturer link to the DB field load copying study load study rate teacher

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A Review of Electronic Fuses: Challenges and Opportunities for Future Vehicular power systems

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IEEE Transactions on Transportation Electrification 2025年第3期11卷 8548-8560页

作者： Mayer, Christoph Baumann, Martin Eisenmann, Bastian Herzog, Hans-Georg Energy Conversion Technology Laboratory TUM School of Engineering and Design Garching85748 Germany BMW Group Research and Development Department Munich80788 Germany High-Power Converter Systems Laboratory TUM School of Engineering and Design Munich80333 Germany

Currently, the vehicular power system is undergoing significant changes. One of the most promising advances thereby are electronic fuses (eFuses) which are intended to replace the state-of-the-art melting fuses. On the one hand, eFuses are beneficial to meet the requirements for highly automated or autonomous driving functions. On the other hand, compared to melting fuses, they also offer advanced protection mechanisms and enhanced diagnosis functions as well as wiring harness optimization potentials. This article provides a comprehensive review about the current state of research regarding vehicular eFuses. The general structure and basic functionalities such as protection mechanisms are explained, followed by an overview of state-of-the-art eFuse hardware solutions. Available investigation methods of eFuses such as simulation models are shown. The effect of eFuses on other system components is explained and compared to melting fuses. A comparative overview and discussion of benefits and drawbacks of eFuses and melting fuses complete the review. This article will be beneficial not only for research institutions, industry professionals, but also for anyone who is inexperienced in the field of vehicular power systems as a reference of the current state of research regarding vehicular eFuses. © 2015 IEEE.

关键词： Protection Fuses power systems Temperature measurement Transistors Hardware Switching circuits Reviews Electrification Surge protection

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Data-driven Inverter-based Volt/VAr Control for Partially Observable Distribution Networks

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CSEE Journal of power and Energy systems 2023年第2期9卷 548-560页

作者： Tong Xu Wenchuan Wu Yiwen Hong Junjie Yu Fazhong Zhang Southwest Electric Power Design Institute Co. Ltd.of China Power Engineering Consulting GroupChengduSichuan 610021China Tsinghua University Beijing 100084China Department of Electrical Engineering State Key Laboratory of Power SystemsTsinghua UniversityBeijing 100084China Guangdong Power Grid Zhongshan Power Supply Bureau Zhongshan 528400China

For active distribution networks(ADNs)integrated with massive inverter-based energy resources,it is impractical to maintain the accurate model and deploy measurements at all nodes due to the large-scale of ***,current models of ADNs usually involve significant errors or even unknown ***,ADNs are usually partially observable since only a few measurements are available at pilot nodes or nodes with significant *** provide a practical Volt/Var control(VVC)strategy for such networks,a data-driven VVC method is proposed in this ***,the system response policy,approximating the relationship between the control variables and states of monitoring nodes,is estimated by a recursive regression closed-form ***,based on real-time measurements and the newly updated system response policy,a VVC strategy with convergence guarantee is *** the recursive regression solution is embedded in the control stage,a data-driven closedloop VVC framework is *** effectiveness of the proposed method is validated in an unbalanced distribution system considering nonlinear loads,where not only the rapid and self-adaptive voltage regulation is realized,but also systemwide optimization is achieved.

关键词： Data-driven distribution networks partial observation Volt/VAr control

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design and Implementation of an 80-160 kV High Voltage power Supply

Design and Implementation of an 80-160 kV High Voltage Power...

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2024 Energy Conversion Congress and Expo Europe, ECCE Europe 2024

作者： Bilicioglu, Muhammed Faruk Bodur, Haci Aselsan Inc. Department of Power and Control Systems Design Engineering Ankara Turkey Yildiz Technical University Department of Electrical Engineering Istanbul Turkey

ISBN: (纸本)9798350364446

In this study, an 80-160 kV, 200 W high voltage power supply is designed and implemented. To overcome the insulation restrictions of the transformer used in the high voltage power supply, a resonant converter and a voltage multiplier circuit were used consecutively for the voltage boosting process. To utilize the parasitic capacitor of transformer becoming dominant due to the high turn ratio, an LCC type series-parallel resonant converter is used as the resonant converter. An optimization algorithm that optimizes efficiency and power density is developed to determine the resonant tank parameters. Bipolar Cockcroft-Walton Voltage Multiplier as the voltage multiplier is preferred due to the advantages of less secondary winding and lower voltage drop. The high voltage power supply design is verified with simulations and experimental results. © 2024 IEEE.

关键词： Resonant converters

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A Comparison Analysis between Two and Three Levels Inverter to Grid-Connected Used the Photovoltaic System 2

A Comparison Analysis between Two and Three Levels Inverter ...

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2nd International Conference on Electronics, Energy and Measurement, IC2EM 2023

作者： Moussa, Faycal Hadj Mihoub Sidi Morsli, Abdelkader Tlemcani, Abdelhalim Belmili, Hocine Nouri, Hassan Medea Algeria Bou-Ismail Tipaza Algeria Electronics and Control Research Group Department of Engineering Design and Mathematics Power Systems Bristol United Kingdom

ISBN: (纸本)9798350314243

This article presents a comparative study of two topologies of three-phase photovoltaic inverters connected to the grid, between the usual two-level inverter and three-level NPC (Neutral Point Clamped) inverter. Inverter control and the boost converter MPPT controller are based on the SRF-dq method and the INC algorithm respectively. The comparison relies on evaluating the overall efficiency and harmonic distortion of the inverter. All circuits are modeled and simulated using Matlab-Simulink. The results obtained indicate satisfaction with the quality, of the current and voltage injected into the electrical grid, and reflect that both inverters are efficient and comply with IEEE-519 standard recommendations, but the three-level inverter performs better results than the two-level inverter. © 2023 IEEE.

关键词： Harmonic distortion

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Optimal material and geometry of 2D-FGM tapered microbeams under dynamic and static constraints

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Mechanics Based design of Structures and Machines 2024年第8期52卷 5227-5262页

作者： Abo-bakr, H.M. Abo-bakr, R.M. Shanab, R.A. Eltaher, M.A. Computers and Systems Engineering Department Faculty of Engineering Zagazig University Zagazig Egypt Mathematical Department Faculty of Science Zagazig University Zagazig Egypt Engineering Mathematics Department Faculty of Engineering Zagazig University Zagazig Egypt Mechanical Engineering Department Faculty of Engineering King Abdulaziz University Jeddah Saudi Arabia Mechanical Design and Production Department Faculty of Engineering Zagazig University Egypt

The present work applies meta-heuristic multi-objective particle swarm optimization (MOPSO) and non-dominated sorting genetic algorithm (NSGA)-II algorithms to predict optimal shape and material distribution of two-directional functionally graded tapered (2DFG-T) microbeams. The cross-section of the microbeam changes linearly along its length in both height and width directions. The rates of these changes are taken as the geometric design variables. Rather than the simple power law, two different trigonometric functions are introduced to provide various effective and flexible 2D- distributions of metal and ceramic phases. Using Hamilton’s principle, the mathematical model is derived based on the third order shear deformation theory (TSDT) and modified couple stress theory (MCST). Developing a computationally efficient and time saving semi-analytical approach, the governing set of variable-coefficients partial differential equations is solved for the frequency and critical buckling under different boundary conditions. Several constrained single- and multi-objective optimization problems are formulated and solved to determine optimal material and geometry parameters of 2DFG-T microbeams to achieve maximization of fundamental frequency and/or critical buckling load while minimizing the structural mass. Various optimization results demonstrate that including shape parameters in addition to material distribution parameters as design variables results in more economical and flexible profiles that is critical for the manufacture of 2DFG-T microbeams. The following model can be exploited in the optimum design of FG microscale nanobeams including their shapes and material distribution. © 2023 Taylor & Francis Group, LLC.

关键词： Multiobjective optimization

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Study on the frequencies of natural oscillations of car transporter wagon

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Noise and Vibration Worldwide 2025年第1-2期56卷 5-24页

作者： Muradian, Leontii Shvets, Anzhelika Nikitenko, Anatolii Shvets, Angela Department of Wagons and Wagon Facilities Ukrainian State University of Science and Technologies Dnipro Ukraine Division of Traction and Electrical Power Economics Electrical Power Engineering Institute Warsaw University of Technology Warsaw Poland Department of Engineering and Design Specialized Department Microprocessor-Based Control Systems and Safety in the Railway Transport Ukrainian State University of Science and Technologies Dnipro Ukraine

The development of new products and services allows railway transport to constantly increase the fleet of specialised wagons, which, in comparison with the universal rolling stock, have the best technical and economic indicators. A significant part of cars is delivered by railways, and it is economically reasonable to transport them on a specialised rolling stock. In this regard, the development of a methodology for refined theoretical studies of the strength of bodies of a double-deck rolling stock for passenger cars transportation, the choice of appropriate design schemes and parameters of the bodies, the analysis of the frequencies and forms of their natural oscillations, taking into account the finite stiffness of the elements, are urgent research tasks. The research uses the methods of structural mechanics of rod systems, the applied theory of elasticity, and discrete masses. A wide range of frequencies and forms of the natural free oscillations was obtained using the discrete mass method for a structural scheme with load transfer from the upper to the lower level of the wagon with the help of four racks. The applied methodology of theoretical determination of frequencies and forms of the natural free oscillations of the car transporter wagon by the method of discrete masses is effective. It allows for the estimation of the dynamic characteristics of the wagon. © The Author(s) 2024.

关键词： Bending oscillations twisting oscillations bouncing oscillations car transporter wagon double-deck rolling stock final rigidity of elements

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Some Use Cases of Security Constrained Economic Dispatch Problem for Outage Work Planning Collaboration System 13

Some Use Cases of Security Constrained Economic Dispatch Pro...

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13th IEEE Global Conference on Consumer Electronic, GCCE 2024

作者： Toyoshima, Ichiro Tatekoji, Takashi Mizutani, Ryota Sato, Hiroaki Toshiba Energy Systems & Solutions Corporation Infrastructure Service Development & Design Department Tokyo Japan Toshiba Energy Systems & Solutions Corporation Power Grid System Solutions Engineering Depattment Kawasaki Japan Toshiba Energy Systems & Solutions Corporation Power Control Computer Systems Department Tokyo Japan

ISBN: (纸本)9798350355079

Outage work planning has been essential to maintain the power grid system. For the operators, the planning is troublesome. It is caused by too complex process. The past few years, we have been developing Outage Work planning Collaboration System (OWCS) with some mathematical optimization techniques. Especially, Security Constrained Economic Dispatch(SCED) is extened in some ways to handle various power grid situations. © 2024 IEEE.

关键词： Constrained optimization

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Comparison of Two-step and One-step Methods in Constant Stress Accelerated Degradation Tests 14

Comparison of Two-step and One-step Methods in Constant Stre...

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14th International Conference on Reliability, Maintainability and Safety, ICRMS 2023

作者： Chen, Siyi Cao, Zhisheng Xie, Min Hu, Qingpei Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing China Beijing Mechanical and Electrical Engineering Design Department Beijing China Department of Advanced Design and Systems Engineering City University of Hong Kong Hong Kong

ISBN: (纸本)9798350329988

Our aim is to predict the failure lifetime of a product under normal operating stress conditions in constant stress accelerated degradation tests by analyzing degradation data obtained at high-stress levels. Two commonly used methods for analyzing degradation data are the one-step and two-step methods. The one-step method involves maximizing the likelihood based on degradation data to estimate model parameters, enabling subsequent inference. On the other hand, the two-step method calculates pseudo-lifetimes for each sample and performs accelerated lifetime testing analysis. Advancements in hardware and software computing have improved the computational efficiency of the one-step method, and its performance is now comparable to that of the widely employed two-step method in the industry. This comparative analysis allows us to evaluate the performance and advantages of the one-step method in handling degradation data. In this study, the linear degradation case was considered specifically, and a simulation of the one-step and two-step methods was conducted under degradation path models in constant stress accelerated degradation testing. We used the relative error in the estimation of the mean time to failure (MTTF) as the basis for comparison. Altogether, the one-step method demonstrates higher accuracy and shorter computation time in assessing the MTTF of the product compared to the two-step method, which assumes pseudo-lifetimes and follows three distinct lifetime distributions. This highlights the superiority of the one-step method in handling degradation data, offering the industry a more reliable approach for analysis. © 2023 IEEE.

关键词： Time-to-failure

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