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3rd international conference on Energy engineering and Power Systems, EEPS 2023

作者： Zhang, Wenbo Yu, Qingbin Dong, Yuliang Fang, Fang Zhao, Zitai North China Electric Power University School of Control and Computer Engineering Beijing China State Grid State Grid Shandong Electric Power Research Institute Jinan China North China Electric Power University School of Energy Power & Mechanical Engineering Beijing China

ISBN: (纸本)9798350313857

In this paper, a model of the turbine and its regulation system of a typical coal-fired unit is built based on the Matlab/Simulink simulation platform, including the electro-hydraulic regulation system model, the electro-hydraulic servo mechanism model and the turbine model, and the scientific validity of each model is verified separately. At the same time, the overall model was simulated and verified under grid-connected operating conditions, and the reliability and accuracy of the model in the evaluation of the primary frequency regulation performance of the unit were finally verified. © 2023 IEEE.

关键词： Simulation platform

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Comparative Study of Three-Phase Bridge Converter Voltage control Techniques 3

Comparative Study of Three-Phase Bridge Converter Voltage Co...

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3rd international conference on Electrical, Computer and Communication engineering, ECCE 2023

作者： Hossain, Shah Mohazzem Rasel, Mohammad Amin, Fahmida Islam, Safkat Military Institute of Science and Technology Dept. of Electrical Electronic and Communication Engineering Dhaka1216 Bangladesh PowerChina Hubei Electric Engineering Corporation Dept. of High Voltage Substation Design and Quality Control Dhaka1200 Bangladesh Orient Energy Engineering Ltd Merul Badda East Gulshan Dept. of High Voltage Substation Design and Quality Control Dhaka1212 Bangladesh University of Grenoble Alpes Dept. of Electrical Engineering and Control Systems Grenoble France

ISBN: (纸本)9798350345360

Nowadays, voltage source converters are commonly used in renewable energy penetration and the smooth control of ac machines. Multiple strategies are followed in designing these converters. The primary purpose of the distinct design is to minimize the harmonic contents from the output waves of the converters and ensure maximum efficiency. In this paper, a three-phase bridge converter feeding a rectified dc input is interfaced with an RL load in the MATLAB/Simulink platform to compare the operational characteristics of these techniques. The total harmonic distortion is also analyzed in all these techniques to illustrate their performance in drive control. Moreover, the impact of varying dc-link voltage, load conditions, switching frequency and duty cycle on these techniques' operational char-acteristics and performances are investigated, primarily focusing on resulting harmonic contents evaluation. © 2023 IEEE.

关键词： Induction machine

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Investigation of Advanced Intelligent Computer-Assisted Systems for Fault Diagnosis and control 3

Investigation of Advanced Intelligent Computer-Assisted Syst...

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3rd international Signal Processing, Communications and engineering Management conference, ISPCEM 2023

作者： Jianfeng, Xia Quanlin, Bian Shiyou, Chen China Railway Engineering Equipment Group Co. Ltd Zhengzhou China

ISBN: (纸本)9798350307023

The fault diagnosis system of tunnel boring machine under PDCA fault cycle is studied based on multi-source information. The system includes three modules, namely intelligent selection plan generation, fuzzy comprehensive evaluation system of the plan and fuzzy multi-attribute decision-making model. Realize the selection of tunnel boring machine and the optimization of main parameters. The research results of this project will provide technical support for tunnel boring machine fault diagnosis. Finally, the fault diagnosis method was verified by taking an actual project as an example. Research shows that integrated diagnosis methods can effectively improve the effectiveness and accuracy of tunnel boring machine fault diagnosis, thereby effectively improving the efficiency of engineering construction. © 2023 IEEE.

关键词： Failure analysis

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Double loops control of fuel cell inverter with a MDSC based-PLL 3

Double loops control of fuel cell inverter with a MDSC based...

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3rd IEEE international Maghreb Meeting of the conference on Sciences and Techniques of Automatic control and Computer engineering, MI-STA 2023

作者： Hamad, Khlid Ben Alkrim, Outman Alazoumi Luta, Doudou N. Fezzan University Faculty of Engineering Department of Electrical and Electronic Engineering Libya Higher Institute of Science and Technology Department of Mechanical Engineering Wadi Al-Ajal Libya Cape Peninsula University of Technology Department of Mechanical and Mechatronic Engineering Bellville South Africa

ISBN: (纸本)9798350319897

Grid-tied renewable and alternative energy technologies have become vital players in the energy industry as they contribute to clean, cost-effective, and sustainable electricity production. They require power converters and proper control to ensure their effective integration into the grid. This investigation focuses on the grid-tied fuel cell inverter control. The control scheme uses outer and inner control loops to regulate the current and the voltage. The fuel cell inverter and grid are synchronized using a multiple delayed signal cancellations (MDSC)-based PLL. The system modelling and simulation are completed using Matlab (SimElectrical). The considered fuel cell inverter is modelled to convert 150 kW DC operating at 1 kV to 130 kW/ 413 V. Harmonics generated from switching power electronic devices inside the 3-level NPC inverter are mitigated using an LCL filter. The findings indicate that the adopted control scheme performs well, with the MDSC-based PLL providing faster and more accurate frequency and phase responses than the classical PLL. © 2023 IEEE.

关键词： Fuel cells

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Application of Improved MTP A Flux-weakening control in Omnidirectional All-wheel Drive Robot 3

Application of Improved MTP A Flux-weakening Control in Omni...

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3rd international conference on Electrical engineering and control Science, IC2ECS 2023

作者： Li, Renjie Li, Zhuohan Liu, Yirui Zhuang, Yan School of Control Science and Engineering Dalian University of Technology Dalian China

ISBN: (纸本)9798350382426

The omnidirectional all-wheel drive mobile robot supports single-wheel independent drive and steering, so it can adapt to complex and changeable terrain conditions by multiple sports modes. In the design of omnidirectional all-wheel drive mobile robot, engineers usually use flux-weakening control to improve the dynamic performance of Permanent Magnet Synchronous Motor (PMSM), so as to achieve better control results. However, there are many problems in the traditional flux-weakening control methods, such as difficult calculation and resource consumption, which makes it difficult to implement in MCU. According to the principle of PMSM, this paper will firstly analyze the characteristics of commonly used flux-weakening control methods. Secondly, on the basis of the traditional flux-weakening control method, this paper will propose an improved Maximum Torque-per-Ampere (MTP A) flux-weakening control method, and analyze the implementation process of the new model. Finally, this paper will verify the flux-weakening control method through simulation and experiments. © 2023 IEEE.

关键词： flux-weakening control maximum torque-per-ampere control mobile robot permanent magnet synchronous motor

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Lead-free (Na0.5Bi0.5)0.45Ba0.40Sr0.15TiO3ceramic: Synthesis, structure and polarization response 3

Lead-free (Na0.5Bi0.5)0.45Ba0.40Sr0.15TiO3ceramic: Synthesis...

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3rd international conference on robotics, Electrical and Signal Processing Techniques, ICREST 2023

作者： Islam, Md. Aliful Zubair, Md. Abdullah Bangladesh University of Engineering and Technology Dept. of Nanomaterials and Ceramic Engineering Dhaka Bangladesh

ISBN: (纸本)9798350346435

In the present study, environmental-friendly lead-free ((Na0.5Bi0.5)0.45Ba0.40Sr0.15TiO3(NB-BST) ceramics were prepared by conventional solid-state reaction route. The structural and electrical properties of the ceramics were investigated for 950°C, 1000°C, and 1050°C sintering temperatures. Grain size was found to be 0.267-0.447 μm. The structural analysis revealed cubic symmetry with a pm-3m space group. P-E loop shape of NB-BST ceramic was found to be strongly dependent on sintering temperature © 2023 IEEE.

关键词： Sintering

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Off-Road Navigation of Legged Robots Using Linear Transfer Operators 3

Off-Road Navigation of Legged Robots Using Linear Transfer O...

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3rd Modeling, Estimation and control conference (MECC)

作者： Moyalan, Joseph Zheng, Andrew Narayanan, Sriram S. K. S. Vaidya, Umesh Clemson Univ Mech Engn Dept Clemson SC 29634 USA

ISBN: (纸本)9781713872344

This paper presents the implementation of off-road navigation on legged robots using convex optimization through linear transfer operators. Given a traversability measure that captures the off-road environment, we lift the navigation problem into the density space using the Perron-Frobenius (P-F) operator. This allows the problem formulation to be represented as a convex optimization. Due to the operator acting on an infinite-dimensional density space, we use data collected from the terrain to get a finite-dimension approximation of the convex optimization. Results of the optimal trajectory for off-road navigation are compared with a standard iterative planner, where we show how the linear operator approach generates a more traversable path for the legged robot compared to the suboptimal iterative planner. Copyright (c) 2023 The Authors. This is an open access article under the CC BY-NC-ND license (https://***/licenses/by-nc-nd/4.0/)

关键词： Off-Road Navigation Nonlinear control Systems Linear Operator Theory robotics

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Distributed Task Assignment Method for Multiple Robots Based on Dynamic Auction Rules 3

Distributed Task Assignment Method for Multiple Robots Based...

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3rd international conference on Consumer Electronics and Computer engineering, ICCECE 2023

作者： Xu, Jiajie Chen, Chinyin Chen, Silu Liu, Qiang Ningbo University Faculty of Electrical Engineering and Computer Science Ningbo China Ningbo Institute of Materials Technology Engineering Chinese Academy of Sciences Zhejiang Key Laboratory of Robotics and Intelligent Manufacturing Equipment Technology Ningbo China

ISBN: (纸本)9798350331578

Existing researchs on multi-robots task assignment focus on improving the task assignment efficiency without considering the task execution time and ignoring the overall task completion efficiency, which leads to its low computational efficiency in dynamic task assignment scenarios. In addition, the use of a centralized control structure requires high communication quality between robots. To address the above issues, we propose a distributed task assignment method for multiple robots based on dynamic auction rules. The method uses distributed control of robot swarms to share and dynamically update each other's task sets, employs dynamic auction rules for task bidding, adds links to adjust the task execution order, and considers the overall task completion efficiency. Finally, relevant experiments are designed, and the experimental results show that the algorithm is more efficient in terms of distribution and stability, balancing higher execution efficiency and lower motion cost. © 2023 IEEE.

关键词： Computational efficiency

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control strategy of vibration zone avoidance based on a hydropower-battery hybrid unit

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ENERGY REPORTS 2023年 9卷 453-461页

作者： Liao, Yiwen Yang, Weijia Li, Xudong Wuhan Univ State Key Lab Water Resources & Hydropower Engn Sc Wuhan 430072 Peoples R China

As a growing number of renewable energy sources (RESs) are integrated into the power system, how to reduce the wear and tear on units while enhancing the regulating capability becomes one of the most pressing concerns for hydropower plants (HPPs). A hydropower flexibility enhancement innovation technology is studied in this paper, which can provide a real-time control ability to avoid the vibration zones for hydropower units (HUs) by the `power sources coordination' between the HU and the unit-side battery. Firstly, the hydropower-battery hybrid unit (HBHU) model and the zone division of HU and battery are introduced. Secondly, the general principles of hydropower-battery coordinated control are proposed. Based on the state of charge (SOC) management and fast response ability of the battery, a control strategy of vibration zone avoidance for HU is suggested, of which feasibility is verified by the simulation in four typical scenarios. The results show that the coordination of the battery not only helps the HU avoid the vibration zones effectively but also improves the regulation performance, as well as reduces the wear and tear of the unit. (c) 2023 The Author(s). Published by Elsevier Ltd. This is an open access article under theCCBY-NC-ND license (http://***/licenses/by-nc-nd/4.0/).

关键词： Hydropower unit Battery Vibration zones control strategy Regulation performance

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Research on Dynamic Characteristics of DC Pantograph Arc 3

Research on Dynamic Characteristics of DC Pantograph Arc

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3rd international conference on Energy engineering and Power Systems, EEPS 2023

作者： Xiao, Qingxin Guo, Fengyi Wang, Zhiyong Wang, Junpeng Liaoning Technical University Faculty of Electrical and Control Engineering Huludao125105 China Faculty of Electrical and Electronic Engineering Wenzhou325035 China

ISBN: (纸本)9798350313857

The pantograph arc occurs frequently, which will decrease the quality of train current. Therefore, the pantograph arc has become the core problem in pantograph system. In this paper, the pantograph arc experiments under different experimental conditions were carried out, the electrical and morphological characteristics of pantograph arc were studied. With the increase of surface roughness, duration is prolonged, arc peak voltage and arc circumference increases, arc spike voltage, arc voltage and arc area decreases;When the contact wire is the anode, the duration is longer, and arc voltage, arc peak and arc spike decrease. The contact wire is the cathode, the circumference and area of the arc are large. The sliding speed has a positive correlation with duration, arc voltage, arc peak, arc spike, arc circumference and area. © 2023 IEEE.

关键词： Pantographs

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