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A Delay-dependent Dynamic Wide Area Damping Controller for Renewable Energy Integrated Power System Resilient to Communication Failure

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CSEE Journal of Power and Energy Systems 2023年第2期9卷 577-588页

作者： Anirban Sengupta Dushmanta Kumar Das Bidyadhar Subudhi Department of Electrical and Electronics Engineering Sikkim Manipal Institute of TechnologySMUSIkkim737136 India Department of Electrical and Electronics Engineering National Institute of TechnologyNagalandDimapur797103 India School of Electrical Science Indian Institute of TechnologyGoaIndia

Integration of renewable energy sources(RES)with a conventional power system has a detrimental effect on interarea *** popular RESs are solar photovoltaic(PV)and wind energy conversion systems(WECS).Both solar PV power generation and WECS are integrated with power systems using a power electronic *** the amount of RES generation lead towards reduction of system damping,which leads towards inter-area ***,the intermittent behavior of a RES reduces the effectiveness of damping controllers.A dynamic controller based wide area damping controller(WADC)is proposed in this paper to increase small signal stability of a RES integrated power *** WADC is designed for contemplating delay in a communication channel,communication failure and *** anti-windup compensator is developed to overcome the effect of actuator ***,the gain of the anti-windup compensator is calculated using LyapunovKrasovskii functional(LKF)in terms of linear matrix inequality(LMI).The actuator considered in this paper is a unified power flow controller(UPFC).Efficacy of PV and wind power integration on power system is also *** efficacy of the developed dynamic controller is verified using IEEE 39 bus and 68 bus power system.

关键词： Actuator saturation communication failure linear matrix inequality renewable energy sources time delay wide area damping control

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Flexible prescribed performance-based approaching control for UAV aerial recovery under multiwind disturbances

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Chinese Journal of Aeronautics 2025年第4期38卷 420-436页

作者： Yanxiang WANG Honglun WANG Junfan ZHU Yiheng LIU Menghua ZHANG Zikang SU School of Automation Science and Electrical Engineering Beihang UniversityBeijing 100191China The Science and Technology on Aircraft Control Laboratory Beihang UniversityBeijing 100191China Shenyuan Honors College Beihang UniversityBeijing 100191China Beijing Institute of Astronautical Systems Engineering Beijing 100076China College of Automation Engineering Nanjing University of Aeronautics and AstronauticsNanjing 211106China

This article investigates the approaching control for fixed-wing Unmanned Aerial Vehi-cle(UAV)aerial recovery in the presence of pre-specified performance requirements,complex air-flows,maneuvering flight of transport aircraft,and different initial ***,a novelcontrol-oriented Six-Degree-Of-Freedom(6-DOF)UAV model considering airflow disturbancesis established for better consistency with the actual UAV ***,to achieve satisfactory per-formance in the approaching process,a Flexible Appointed-time Prescribed Performance Control(FAPPC)algorithm,with the features of user-specified time convergence,no overshoot,indepen-dence from the initial value,and singularity-free,is ***,to solve the singularityissue encountered by the existing PPC methods in dealing with sudden disturbances,an adaptiveadjustment signal is introduced in FAPPC to perceive the threat of increasing error and relax thepreset boundaries ***,minimum learning parameter-based neural networkestimators are developed to approximate unknown lumped disturbances at a low ***,the stability of the closed system is analyzed via Lyapunov synthesis,and the effective-ness and advantages of the proposed control scheme are demonstrated via simulation andHardware-In-the-Loop(HIL)experimental validation.

关键词： Approaching control UAV aerial recovery Flexible prescribed performance control Sudden disturbances Neural network estimator

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Sensorless Noise Reduction Strategy for Permanent Magnet Synchronous Motor Based on Random High-Frequency Sinusoidal Injection 27

Sensorless Noise Reduction Strategy for Permanent Magnet Syn...

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27th International Conference on electrical Machines and Systems, ICEMS 2024

作者： Li, Sisi Li, Binxing Zhang, Guoqiang Wang, Siqi Wang, Gaolin Xu, Dianguo School of Electrical Engineering and Automation Harbin Institute of Technology Harbin China

ISBN: (纸本)9784886864406

In the sensorless permanent magnet synchronous motor (PMSM) control system, the additional noise caused by high-frequency (HF) injection method greatly affects the wide application in various fields. The noise reduction ability of the traditional HF sinusoidal injection method using the full-period-switching random HF injection method is unsatisfactory. Therefore, a novel random HF sinusoidal injection method based on half-period-switch is proposed in this paper, which switches the injection frequency once per half period to improve the overall noise reduction effect. The mechanism of noise reduction can be verified by power spectral density analysis. Finally, the effectiveness of the proposed strategy is verified on a 2.2-kW sensorless PMSM drive platform. © 2024 The institute of electrical Engineers of Japan.

关键词： Noise abatement

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Secure Three-Dimensional Guidance for Target Strikes Under Unknown Direction Attacks and Multiple Constraints

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IEEE Transactions on Aerospace and Electronic Systems 2025年第3期61卷 6951-6963页

作者： Wang, Yu Wang, Chenliang Zhu, Baopeng Liu, Guowei Wang, Enmei Guo, Lei Beihang University School of Automation Science and Electrical Engineering Beijing100191 China Southeast University School of Automation Nanjing210096 China Beihang University Hangzhou Innovation Institute Hangzhou310051 China

Due to the high reliance of guidance systems on wireless networks, ensuring the secure operation of missiles under cyber-attacks is critical to avoid degradation in guidance precision or system divergence. In this paper, a secure three-dimensional guidance law is proposed for speed-varying missiles to precisely strike targets under unknown direction cyber-attacks on guidance commands, including falsification of their magnitudes and signs. To improve the lethality while avoiding violation of the seeker's field-of-view limits, the constraints on impact angles and the look angle are both taken into consideration by constructing two auxiliary variables. To attenuate the adverse effects caused by cyber-attacks, Nussbaum functions are employed to search for the attack directions, and adaptive techniques are applied to estimate the unknown attack-related parameters. Moreover, the closed-loop stability of the guidance system can be guaranteed even in the presence of nonidentical attack directions in two guidance channels and malicious sign switchings. Finally, the effectiveness of the proposed scheme is illustrated by simulation results. © 1965-2011 IEEE.

关键词： Cyber attacks

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A High Current Bidirectional DC/DC Converter with Fault Blocking Ability 11th

A High Current Bidirectional DC/DC Converter with Fault Bloc...

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11th Frontier Academic Forum of electrical engineering, FAFEE 2024

作者： Ding, Lianzheng Jiao, Yingzong Li, Binbin School of Electrical Engineering and Automation Harbin Institute of Technology Harbin150001 China

ISBN: (纸本)9789819788231

In DC power grids, DC/DC converters are crucial equipment for interconnecting lines of different voltage levels, requiring large capacity and high reliability. This article proposes a high current bidirectional DC/DC converter with fault blocking capability. The proposed topology has high current stress and can quickly block DC side short circuit faults. Firstly, the working principle of the proposed topology was analyzed, followed by its fault suppression strategy and fault current calculation under different types of DC side short circuit faults. Finally, a ± 300MW simulation model was built to verify its fault blocking ability and the correctness of the fault current calculation method. © Beijing Paike Culture Commu. Co., Ltd. 2025.

关键词： Power grids

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An overview on IRS-enabled sensing and communications for 6G: architectures, fundamental limits, and joint beamforming designs

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science China(Information sciences) 2025年第5期68卷 170-193页

作者： Xianxin SONG Yuan FANG Feng WANG Zixiang REN Xianghao YU Ye ZHANG Fan LIU Jie XU Derrick Wing Kwan NG Rui ZHANG Shuguang CUI School of Science and Engineering (SSE) Shenzhen Future Network of Intelligence Institute (FNii-Shenzhen)and Guangdong Provincial Key Laboratory of Future Networks of Intelligence The Chinese University of Hong Kong Department of Electrical Engineering City University of Hong Kong School of Information Engineering Guangdong University of Technology Key Laboratory of Wireless-Optical Communications Chinese Academy of Sciences School of Information Science and Technology University of Science and Technology of China Computer School Beijing Information Science and Technology University National Mobile Communications Research Laboratory School of Information Science and Engineering Southeast University School of Electrical Engineering and Telecommunications University of New South Wales School of Science and Engineering Shenzhen Research Institute of Big Data The Chinese University of Hong Kong Department of Electrical and Computer Engineering National University of Singapore

This study presents an overview on intelligent reflecting surface(IRS)-enabled sensing and communication for the forthcoming sixth-generation(6G) wireless networks, in which IRSs are strategically deployed to proactively reconfigure wireless environments to improve both sensing and communication(S&C) performance. First, we exploit a single IRS to enable wireless sensing in the base station's(BS's) non-line-of-sight(NLoS) area. In particular, we present three IRS-enabled NLoS target sensing architectures with fully-passive, semi-passive, and active IRSs, respectively. We compare their pros and cons by analyzing the fundamental sensing performance limits for target detection and parameter estimation. Next, we consider a single IRS to facilitate integrated sensing and communication(ISAC), in which the transmit signals at the BS are used for achieving both S&C functionalities, aided by the IRS through reflective beamforming. We present joint transmit signal and receiver processing designs for realizing efficient ISAC, and jointly optimize the transmit beamforming at the BS and reflective beamforming at the IRS to balance the fundamental performance tradeoff between S&C. Furthermore, we discuss multi-IRS networked ISAC, by particularly focusing on multi-IRS-enabled multi-link ISAC, multi-region ISAC, and ISAC signal routing, respectively. Finally, we highlight various promising research topics in this area to motivate future work.

关键词： integrated sensing and communication (ISAC) intelligent reflecting surface (IRS) non-line-of-sight (NLoS) sensing sensing and communication tradeoff

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Image Segmentation Algorithm Based on Improved U-Net for Mineral Froth Flotation Process 1

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5th International Conference on Artificial Intelligence in China, AIC 2023

作者： Wu, Jiansheng Chen, Xiaoqi Ma, Jianfu Fu, Meixia Wang, Qu Lu, Yifan Wang, Zhenqian Wang, Jianquan School of Automation and Electrical Engineering Institute of Industrial Internet University of Science and Technology Beijing Beijing China

ISBN: (数字)9789819975457

ISBN: (纸本)9789819975440

The froth size distribution in mineral flotation production is closely tied to production indicators. Therefore, accurate segmentation of froth images is of great significance for optimizing and controlling the flotation process. However, the high complexity of froth images poses a challenge to the implementation of precise segmentation using the existing segmentation methods. In this study, we propose a novel deep learning algorithm based on U-Net to address the issue of low accuracy in froth image segmentation. The algorithm utilizes the Convolutional Block Attention Module (CBAM) in the downsampling process to focus on edge features and the Atrous Spatial Pyramid Pooling (ASPP) Head module at the decoder end to restore multi-scale information. We create a froth dataset to evaluate the effectiveness of the proposed algorithm. Experimental results show that the proposed algorithm outperforms other existing image segmentation methods and is applicable to different conditions in the flotation process. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Image segmentation

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RESEARCH ON MICRON-SIZED COPPER BALLS POSITION DETECTION BASED ON PHOTOACOUSTIC MICROSCOPY 7

RESEARCH ON MICRON-SIZED COPPER BALLS POSITION DETECTION BAS...

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7th International Symposium on Laser Ultrasonics and Advanced Sensing, LU 2024

作者： Yan, Peng Zhang, Yang Xia, Zhiying Ye, Jun Zhang, Xinhao Ni, Bin Xu, Bin Liu, Xuefeng Xiong, Jichuan School of Electronic and Optical Engineering Nanjing University of Science and Technology Nanjing210094 China School of Electrical Engineering and Automation Luoyang Institute of Science and Technology Luoyang471023 China

Photoacoustic microscopy (PAM) is a novel non-invasive imaging technique that utilizes the endogenous optical absorption properties of a sample to obtain structural and functional information about the sample, and has a wide range of applications in the field of bioimaging. However, there are few reports on position detection of micrometallic materials using PAM. In this paper, a method to measure the optical absorption and spatial position of metallic materials using PAM is proposed. Firstly, the working principle and realization method of PAM are introduced, and PAM experiments are carried out on a copper sphere with a diameter of about 100 µm. The experimental results show that the proposed method is effective in determining the center position of micron-sized metal particles, which is very important for the detection work. © 2025 institute of Physics Publishing. All rights reserved.

关键词： Copper

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Analysis of Self-Excitation Characteristics of an Air-Core Brushless Induction Pulsed Alternator 10

Analysis of Self-Excitation Characteristics of an Air-Core B...

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10th Euro-Asian Pulsed Power Conference, 25th International Conference on High-Power Particle Beams and 20th International Symposium on Electromagnetic Launch technology, EAPPC-BEAMS-EML 2024

作者： Dou, Chujie Wu, Shaopeng Du, Bochao Wang, Song Harbin Institute of Technology School of Electrical Engineering and Automation Harbin China

ISBN: (纸本)9789038661353

This paper proposes a new type of an air-core brushless induction pulsed alternator (AIPA) that can avoid brush and rotor problems at high speeds. Based on the state space theory, through the position change of the dominant pole of the system, the influence of system parameters (especially the extremely weak magnetizing inductance caused by the air-core structure) on the self-excitation characteristics is analyzed, and basic design principles are given. Finally, the correctness of the theory was verified through simulation. © 2024 Eindhoven University of technology.

关键词： air-core brushless induction pulsed alternator self-excitation state space

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Current Ripple Optimization Model Predictive Control for High-Speed Permanent Magnet Synchronous Motor with Flywheel Energy Storage

Current Ripple Optimization Model Predictive Control for Hig...

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International Conference of electrical, Electronic and Networked Energy Systems, EENES 2024

作者： Xu, Yiming Duan, Jiandong Wang, Luxiao Si, Xiang Zhang, Pengfei Li, Yuhui Shao, Bo School of Electrical Engineering and Automation Harbin Institute of Technology Harbin150001 China

ISBN: (纸本)9789819618552

Flywheel energy storage system (FESS) high-speed permanent magnet synchronous motors (HPMSM) often use magnetic bearings. The motor rotor is susceptible to current ripples, resulting in vibration noise and even instability. In this paper, an improved model predictive control strategy is proposed to reduce the ripple current of the bus capacitor while optimizing the current of the HPMSM to reduce the vibration noise. Firstly, a three-vector finite set model predictive control algorithm is designed to solve the problem of large current ripple caused by the limited number of optional vectors in the control period of the traditional finite set model predictive algorithm. In order to reduce the number of switch state transitions and reduce the switching loss, a zero-vector optimization allocation strategy is proposed, which the zero vector at the end of the current control cycle is the same as the zero vector at the beginning of the next cycle. Then, according to the switching state of the motor side and the grid side converter, the bus capacitor current is predicted, a unified cost function including the bus capacitor current is established, and the optimal vectors of the motor side and the grid side are selected by comprehensive evaluation. Finally, the correctness is verified by simulation. © Beijing Paike Culture Commu. Co., Ltd. 2025.

关键词： Cost functions

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