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19th Annual Conference of China Electrotechnical Society, ACCES 2024

作者： Tong, Lei Zhao, Wenbo Zhang, Qiang Lu, Ming Zhang, Jiantao Zhu, Chunbo School of Electrical Engineering and Automation Harbin Institute of Technology Harbin150001 China Beijing Institute of Control Engineering Beijing100000 China

ISBN: (纸本)9789819647996

With the popularization of wireless power transfer (WPT) in consumer electronics, this technology has attracted more and more researchers’ attention in the fields of automobile, aerospace, underwater ships and so on. WPT has become a subversive solution to the pain-point problem of many technical fields. At present, the rotating power supply in the aerospace is mainly realized by slip rings or cables. Slip rings are essentially current-carrying contact mechanical system, with the problems of short circuit and open circuit, which have become a technical bottleneck for long-life and high-reliability aerospace rotating mechanisms. WPT does not have mechanical wear problems and cable-drag problems. In this paper, a wireless rotating power supply system is proposed according to the requirements of space rotating mechanism, achieving an output power of 2.5 kW with an efficiency of 92% each channel. © Beijing Paike Culture Commu. Co., Ltd. 2025.

关键词： Inductive power transmission

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Wind disturbance compensated path-following control for fixed-wing UAVs in arbitrarily strong winds

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Chinese Journal of Aeronautics 2024年第2期37卷 431-445页

作者： Hao LU Lan GAO Yunda YAN Mingzhe HOU Chenliang WANG Hangzhou Innovation Institute Beihang UniversityHangzhou 310051China School of Information Science and Technology Hangzhou Normal UniversityHangzhou 311121China Department of Computer Science University College LondonLondon WC1E 6BTUnited Kingdom Center for Control Theory and Guidance Technology Harbin Institute of TechnologyHarbin 150001China School of Automation Science and Electrical Engineering Beihang UniversityBeijing 100191China

Wind is the primary challenge for low-speed fixed-wing unmanned aerial vehicles to follow a predefined flight *** cope with various wind conditions,this paper proposes a wind disturbance compensated path following control strategy where the wind disturbance estimate is incorporated with the nominal guiding vector field to provide the desired airspeed direction for the *** the control input vector for the outer-loop kinematic subsystem needs to satisfy a magnitude constraint,a scaling mechanism is introduced to tune the proportions of the compensation and nominal ***,an optimization problem is formulated to pursue a maximum wind compensation in strong winds,which can be solved analytically to yield two scaling factors.A cascaded inner-loop tracking controller is also designed to fulfill the outer-loop wind disturbance compensated guiding vector ***-fidelity simulation results under sensor noises and realistic winds demonstrate that the proposed path following algorithm is less sensitive to sensor noises,achieves promising accuracy in normal winds,and mitigates the deviation from a desired path in wild winds.

关键词： Path following Guiding vector field Wind disturbance Disturbance rejection Fixed wings

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Developing Digital Twin for Electromechanical System of Rolling Stand in Simulink Real Time

Developing Digital Twin for Electromechanical System of Roll...

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2024 International Ural Conference on Electrical Power engineering, UralCon 2024

作者： Radionov, Andrey A. Karandaev, Alexandr S. Loginov, Boris M. Khramshin, Vadim R. Moscow Polytechnic University Department of Automation and Control Moscow Russia Magnitogorsk Iron and Steel Works Magnitogorsk Russia Power Engineering and Automated Systems Institute Nosov Magnitogorsk State Technical University Magnitogorsk Russia

ISBN: (纸本)9798350386028

The development of digital twins (DTs) of industrial electrical systems is attributed to the need for the reduction of time and material resource inputs during their virtual commissioning (VC). The same problem occurs during renovation with complete or partial equipment replacement and/or control systems. These problems can be efficiently solved by developing object-oriented DTs based on the Simulink Real Time software and using hardware-in-the-loop simulation (HIL). This software is compatible with Matlab Simulink and the Simscape package, which makes it suitable for the industrial usage. The authors suggest a HIL-based approach that helps make a virtual real-time computer model, with process control signals coming from the industrial PLC that controls the real physical object. This problem occurred during the renovation of the horizontal stand electric drives of a 5000 plate mill. The authors provide the flow charts of the electromechanical system and the object-oriented DT. The implementation of DT in Matlab Simulink Desktop Real Time is reviewed in laboratory settings. The authors present the block structures that make up a virtual model of the electromechanical system. The developed DT was used to adjust control algorithms and controllers and study the dynamic modes over a rolling cycle. The adequacy of the processes was tested by comparing the oscillograms obtained with the developed DT and the rolling mill. The authors stress the feasibility of developing DTs on the Simulink Real Time platform using HIL simulation during VC and renovation of complex industrial objects. © 2024 IEEE.

关键词： MATLAB

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control Analysis of Propfan Engine Based on Dual Redundancy Electro-hydrostatic Actuator 18

Control Analysis of Propfan Engine Based on Dual Redundancy ...

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18th IEEE Conference on Industrial Electronics and Applications, ICIEA 2023

作者： Shi, Cun Wang, Qiyang Chen, Jing Fan, Siming Wang, Xingjian Wang, Shaoping Beihang University School of Automation Science and Electrical Engineering Beijing China Beihang University Ningbo Innovation Research Institute Ningbo China Aecc Aero-Engine Control System Institute Wuxi China

ISBN: (纸本)9798350312201

With the advantages of high fault tolerance, high reliability, high dynamic response and high power-to-weight ratio, the propfan engine is one of the most promising aircraft propulsion systems. In this paper, the model and control method of controlling the thrust of the propfan engine by controlling the blade pitch angle through the dual redundant electro-hydrostatic actuator (EHA) are constructed. The variable pitch propfan engine model is constructed by physical mathematical analysis, interpolation fitting and so on. The thrust control of variable pitch engine by dual redundancy EHA is completed by two-phase current control, fuzzy control and other control methods. The reliability of the constructed model and the better response characteristics of the design control method are verified by comparing the simulation experiment with the public data set. This paper provides a reference for thrust control of variable pitch propfan engine. © 2023 IEEE.

关键词： Fuzzy control

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Acoustic Positioning of Partial Discharges in High-Voltage Transformer Tank

Acoustic Positioning of Partial Discharges in High-Voltage T...

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2024 International Ural Conference on Electrical Power engineering, UralCon 2024

作者： Karandaev, Alexandr S. Loginov, Andrey B. Nikolaev, Andrey A. Moscow Polytechnic University Department of Automation and Control Moscow Russia Power Engineering and Automated Systems Institute Nosov Magnitogorsk State Technical University Magnitogorsk Russia Magnitogorsk Iron and Steel Works Magnitogorsk Russia

ISBN: (纸本)9798350386028

This report reviews an example of acoustic positioning of partial discharges (PD) in the tank of a high-voltage oil-filled transformer. The literature review confirms the importance of PD monitoring and justifies the feasibility of positioning discharge activity centers. The precise positioning of PD sources is required to determine the location of insulation defects. The authors provide brief information on the development of PD positioning methods and note that their practical application has been insufficiently covered in publications. They present the results of electromagnetic and acoustic PD positioning in a 110 kV transformer. Some details are provided on the devices and measurement methods used, including the localization of areas with increased PD intensity using one acoustic sensor and the subsequent center localization through the installation of 4 sensors at even intervals. The authors provide PD signals and defect impulses received from each of the sensors and demonstrate the difference in the registration time of these signals. They explain the principle behind PD center positioning, which is determined considering delays in signal reception. The authors demonstrate the usage of the Inva (Portable) software for the processing and visualization of acoustic positioning results. They note that changes in the propagation rate of acoustic waves in a heterogeneous medium result in the reduced accuracy of results. The authors also outline the prospects of the research into the elimination of occurring defects. © 2024 IEEE.

关键词： Oil filled transformers

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Semi-asynchronous personalized federated learning for short-term photovoltaic power forecasting

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Digital Communications and Networks 2023年第5期9卷 1221-1229页

作者： Weishan Zhang Xiao Chen Ke He Leiming Chen Liang Xu Xiao Wang Su Yang College of Computer Science and Technology China University of Petroleum(East China)China Sichuan Energy Internet Research Institute Tsinghua UniversityChina School of Computer and Communication Engineering Beijing University of Science and TechnologyChina State Key Laboratory of Management and Control for Complex Systems Institute of AutomationChinese Academy of SciencesBeijingChina School of Computer Science Fudan UniversityChina

Accurate forecasting for photovoltaic power generation is one of the key enablers for the integration of solar photovoltaic systems into power *** deep-learning-based methods can perform well if there are sufficient training data and enough computational ***,there are challenges in building models through centralized shared data due to data privacy concerns and industry *** learning is a new distributed machine learning approach which enables training models across edge devices while data reside *** this paper,we propose an efficient semi-asynchronous federated learning framework for short-term solar power forecasting and evaluate the framework performance using a CNN-LSTM *** design a personalization technique and a semi-asynchronous aggregation strategy to improve the efficiency of the proposed federated forecasting *** evaluations using a real-world dataset demonstrate that the federated models can achieve significantly higher forecasting performance than fully local models while protecting data privacy,and the proposed semi-asynchronous aggregation and the personalization technique can make the forecasting framework more robust in real-world scenarios.

关键词： Photovoltaic power forecasting Federated learning Edge computing CNN-LSTM

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Evaluation and Optimization Schemes of Eddy Current Loss on Structural Components for High Voltage Converter Transformer 4th

Evaluation and Optimization Schemes of Eddy Current Loss on ...

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4th International Symposium on Insulation and Discharge Computation for Power Equipment, IDCOMPU 2023

作者： Shen, Min Guo, Penghong Wang, Yanling Sun, Youliang Yu, Xiangdong School of Intelligent Manufacturing and Control Engineering Qilu Institute of Technology Jinan250200 China Shandong Power Equipment Co. Ltd. Jinan250022 China School of Electrical Engineering and Automation Hefei University of Technology Hefei230009 China

ISBN: (纸本)9789819974122

Compared with the traditional alternating current (AC) transmission system, High-voltage direct current (HVDC) transmission technology plays an essential role in the long distance, large capacity, and regional power grid interconnection, for its characteristics of higher economy, reliability, and stability. As the key power equipment in the HVDC transmission system, the converter trans-former cooperates with the converter valve to achieve AC and DC conversion. Due to the large capacity, high impedance, harmonics, DC bias, and other working conditions for the converter transformer, the eddy current loss of the structural components induced by leakage magnetic flux, will be increased significantly and result in the efficiency reduction and local overheating problem, endangering the operational reliability of itself and the power system. In a flexible HVDC transmission system, regarding the convert-er transformer as the research object, the optimal composite shielding scheme is proposed and determined by the optimization design and finite element analysis (FEA) calculation, which are based on the values and distribution of leakage flux and loss density. Furthermore, the experimental results verify the proposed overall leakage magnetic flux control scheme. © Beijing Paike Culture Commu. Co., Ltd 2024.

关键词： HVDC power transmission

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Thermal constraint control of reversible solid oxide cell for optimal system efficiency

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International Journal of Hydrogen Energy 2025年 134卷 198-211页

作者： Xu, Yuanwu Yin, Jie Wang, Jingjing Wu, Xiao-long Peng, Jingxuan Tang, Ruifeng Zou, Suhang Fu, Xiaowei Li, Xi School of Artificial Intelligence and Automation Wuhan University of Science and Technology Hubei Wuhan430081 China School of Artificial Intelligence and Automation Key Laboratory of Image Processing and Intelligent Control of Education Ministry Huazhong University of Science and Technology Hubei Wuhan430074 China School of Information Engineering Nanchang University Jiangxi Nanchang330031 China School of Electrical and Electronic Engineering Nanyang Technological University 639798 Singapore China-Poland Belt and Road Joint Laboratory on Measurement and Control Technology Huazhong University of Science and Technology Hubei Wuhan430074 China Shenzhen Huazhong University of Science and Technology Research Institute Shenzhen518055 China

Reversible solid oxide cell (RSOC) demonstrates considerable promise in multimodal energy conversion architectures, particularly as a technology for hydrogen-based energy storage systems. Nevertheless, under dynamic operating regimes with time-varying current inputs, realizing time-efficient and reliable transitions to steady-state operation remains difficult. This difficulty arises from the intricate coupling of thermal, electrical, and gaseous processes within the RSOC system. This study aims to address these challenges by developing a 5 kW mathematical model of the RSOC system. The proposed model enables systematic investigation of thermal safety issues arising during current switching operations while introducing a thermal constraint control strategy to enhance both system efficiency and thermal safety performance. This efficiency-driven study employs the Grid Search algorithm to identify optimal steady-state operating points for the RSOC system, ensuring strict adherence to safety constraints across varying current inputs. Furthermore, by integrating the pre-identified optimal operating points as feedforward control with Model Predictive control (MPC)-based feedback correction, this hybrid strategy effectively mitigates stack temperature gradient overshoot while synchronously ensuring optimal system efficiency throughout current transition processes. Under simulated variable current inputs, the proposed RSOC system model and control strategy demonstrate the capability to constrain stack temperature gradient overshoot within 2.3K while enhancing transient efficiency by 5 %–8 %, achieving a peak system efficiency of 85 %. It provides a novel methodology for safe and efficient working with intermittent renewable energy. © 2025 Hydrogen Energy Publications LLC

关键词： Thermal variables control

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Health assessment method for core components of switching quantity interface circuit based on active excitation test 14

Health assessment method for core components of switching qu...

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

作者： Xu, Peiyang Jia, Long Ma, Jian Chen, Chang Chen, Wei Lan, Chunyun Zou, Xinyu Li, Tianhao Science & Technology on Reliability & Environmental Engineering Laboratory School of Reliability and Systems Engineering Beihang University Beijing China School of Automation Science and Electrical Engineering Beijing Aerospace Institute of Automatic Control Beihang University Beijing China Science & Technology on Reliability & Environmental Engineering Laboratory School of Reliability and Systems Engineering Institute of Reliability Engineering Beihang University Beijing China Beijing Aerospace Institute of Automatic Control Beijing China

ISBN: (纸本)9798350329988

As power electronics technology continues to advance, the prevalence of switching quantity interface circuits has grown in diverse domains, encompassing industrial production and everyday civilian applications. An analysis of operational data from these circuits, along with an assessment of their overall health, proves instrumental in the timely detection and resolution of operational anomalies. This holds paramount significance in upholding the reliability of these interface circuits. Nevertheless, tracking the degradation trajectory of the core components during their operational lifespan poses a challenge. Typically, only two states, normal and abnormal, are readily discernible, making direct health assessment elusive. To address this issue, this study introduces a health assessment methodology for the fundamental components of switch quantity interface circuits based on active excitation testing. Through the application of active excitation, the performance decay profile of the optical coupler is ascertained, solving the problem of capturing the degradation process within these circuits. This approach facilitates the stable and precise characterization of the health status of switching quantity interface circuits. The health assessment method presented in this paper is characterized by modest computational resource demands and a reduced reliance on expert knowledge. It is adept at quantitatively delineating the health status of switch-quantity interface circuits with precision, thereby offering guidance for the maintenance and replacement of pivotal electronic components within these circuits. In doing so, it contributes to the assurance of operational dependability and an extension of the service life of switch quantity interface circuits. © 2023 IEEE.

关键词： Reliability analysis

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A Study of Droplets Emission Characteristics in the Ultrasonic Electric Propulsion System 74

A Study of Droplets Emission Characteristics in the Ultrason...

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74th International Astronautical Congress, IAC 2023

作者： He, Weiguo Huo, Weijie Zhu, Kangwu Hu, Jianqiang School of Mechatronic Engineering and Automation Shanghai University Shanghai200444 China Shanghai Aerospace Electronic Technology Institute Shanghai201109 China Shanghai Aerospace Control Technology Institute Shanghai201109 China

The emitter density of the Ultrasonic Electric Propulsion (UEP) system is higher than that of conventional micro thrusters, making it ideal for use in micro-satellite platforms. Although studying the microscopic plume in micro thrusters is difficult, this work takes a first step in that direction by using a high-speed imaging technique coupled with a long-distance microscope to reveal and investigate the droplets' emission characteristics (DECs) between the emission surface and the extractor in the UEP system. The sizes characteristics of the emission plumes indicate that the biggest number of measured droplets have a size between 25.2 and 34.3 μm, accounting for 25% of all measurements, while the smallest number of measured droplets fall into the 88.9 to 98 μm size range, accounting for 0.5% of all data. Meanwhile, the process from liquid cone generation on the emission surface to droplet separation is shown. The ultrasonic impact and the differentiated creation of the liquid layer on the emission surface give rise to several special emissions during the emission process of the UEP system. Near the emission surface, the double droplets are seen, providing experimental support for the multi-droplet emission modes. Additionally, the droplets' collisions with coalescences are recorded, along with some rotations during the emission and acceleration process. Copyright © 2023 by the International Astronautical Federation (IAF). All rights reserved.

关键词： Droplets emission characteristics Electric field High-speed imaging technique Micro satellite Ultrasonic Electric Propulsion system

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