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Fault Detection in Cascaded H-Bridge Inverters using Spectrogram Analysis and Convolutional Neural Networks

Fault Detection in Cascaded H-Bridge Inverters using Spectro...

引用

2023 International Aegean Conference on electrical Machines and Power Electronics and 2023 International Conference on Optimization of electrical and Electronic Equipment, ACEMP-OPTIM 2023

作者： Rokocakau, Samuela Tresca, Giulia Cirrincione, Giansalvo Zanchetta, Pericle Kumar, Rahul Cirrincione, Maurizio Frosini, Lucia Electrical Computer and Biomedical Engineering Dept. The University of Pavia Pavia Italy Laboratory of Novel Technologies University of Picardie Jules Verne Amiens France Electrical and Electronic Engineering Dept. University of Nottingham United Kingdom School of Information Technology Engineering Mathematics and Physics The University of the South Pacific Suva Fiji

ISBN: (纸本)9798350311495

Ensuring reliability and safety in multilevel power converter topologies requires effective fault diagnostics, especially considering the greater number of components involved compared to traditional converters. Recent research has recognized the potential of Artificial Neural Networks (ANN) in enhancing diagnostic strategies. In this context, this study proposes an innovative approach for detecting devices faults in multilevel converters using Convolutional Neural Networks (CNN) through 2D image-based classification. The simulation results demonstrate the efficacy of this method, enabling more dependable and efficient multilevel power electronic systems. © 2023 IEEE.

关键词： Convolution

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Competitive-Driven Learning for Image Ordinal Classification 3

Competitive-Driven Learning for Image Ordinal Classification

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3rd International Conference on Electronic Information engineering and computer Communication, EIECC 2023

作者： Zhang, Chao Feng, Chao Cheng, Jianmei Fu, Keren Intelligent Policing Key Laboratory of Sichuan Province Luzhou China Sichuan Police College Luzhou China University of Michigan Dept. Electrical Engineering and Computer Science Ann Arbor United States Sichuan University Dept. Computer Science Chengdu China

ISBN: (纸本)9798350359961

Image ordinal classification (IOC) assigns a discrete yet ordinal scalar label to an input image, such as age estimation. For IOC, it is non-trivial to effectively incorporate the ordinal information of inputs into the classification task. In this work, we adopt the concept of CutMix, a data augmentation technique that mixes two samples and their labels proportionally during the training, to help the task of ordinal classification. In particular, we study the CutMix from the perspective of metric learning instead of data augmentation, which naturally and simply implements classification learning and difference regression learning. Firstly, we embed two ordinal images into the training procedure by a virtual combination of image and label, and explain why CutMix fits IOC well. Secondly, the ordinal difference between two images is utilized to learn the fine difference in category classification, which is integrated with CutMix properly. Finally, for further improvement, dual pairing and random augmentation are proposed to enlarge the disparity of two objects, so as to exploit more discriminative feature. Comprehensive experiments demonstrate the effectiveness of our newly proposed approach, which outperforms previous methods with a relatively large margin (>2%). © 2023 IEEE.

关键词： Competitive learning Image ordinal classification Image recognition

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An End-to-End Learning Approach for Subpixel Feature Extraction

An End-to-End Learning Approach for Subpixel Feature Extract...

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3D Image Acquisition and Display: Technology, Perception and Applications, 3D, COSI, DH, FLatOptics, IS, pcAOP 2023 - Part of Imaging and Applied Optics Congress 2023

作者： Xu, Xiaojian Fessler, Jeffrey A. Klasky, Marc Sidharth, G.S. Schei, Jennifer L. McCann, Michael Thompson Dept. of Electrical and Computer Engineering University of Michigan Ann ArborMI48109 United States Los Alamos National Laboratory Los AlamosNM87545 United States Dept. of Aerospace Engineering Iowa State University United States

We propose a feature extraction method based on Fourier image encoding and a multiscale convolutional neural network, training end-to-end. Our experiments show the method can localize subpixel feature locations from d... 详细信息

ISBN: (纸本)9781957171289

关键词： Feature extraction

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Calculating Critical Inertia of a Power System

Calculating Critical Inertia of a Power System

引用

IEEE Southeastcon

作者： Fariha Hakim Sneha Yilu Liu Rocio Uria Martinez Jiaojiao Dong Dept. of Electrical Engineering and Computer Science University of Tennessee Knoxville Oak Ridge National Laboratory

ISBN: (数字)9798331504847

ISBN: (纸本)9798331504854

The increasing integration of renewable energy sources in modern power systems has led to a decline in system inertia, raising concerns about frequency stability following large disturbances. Determining critical inertia is essential to prevent excessive frequency decline and ensure grid stability. This paper evaluates four different methods for calculating critical inertia, using the Electric Reliability Council of Texas (ERCOT) system as a test case. The results highlight the importance of employing multiple methodologies to capture the full spectrum of inertia requirements.

关键词： Renewable energy sources Time-frequency analysis Power system dynamics Power system stability Frequency estimation Robustness Circuit stability Power system reliability Frequency synchronization Numerical stability

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High-Contrast Low-Loss Antennas with Improved Bandwidth and Wearability

High-Contrast Low-Loss Antennas with Improved Bandwidth and ...

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International Workshop on Antenna Technology: Small Antennas and Novel Metamaterials, iWAT

作者： Allyanna Rice Asimina Kiourti Dept. of Electrical and Computer Engineering ElectroScience Laboratory The Ohio State University Columbus OH USA

ISBN: (数字)9798331527365

ISBN: (纸本)9798331527372

We recently presented a new class of antennas for into-body radiation with unprecedented performance, namely, High-Contrast Low-Loss Antennas (HCLAs). The HCLAs, however, were limited by their size and bandwidth capabilities. Into-body antennas should be conformal to the body for wearable applications. Additionally, lower frequencies should be targeted due to their larger penetration dept.s into the tissues. To overcome these challenges, we herewith propose to (a) reduce the height, and (b) improve the low frequency cutoff, without compromising antenna performance. Simulations and measurements verify that the antenna height can be reduced from 12.1 mm to 7.5 mm and the low frequency cutoff (│S 11 │ < -10 dB) can be improved from 1.38 GHz to 730 MHz without additional volume. These improvements allow for better implementation of the HCLA in diverse telemetry, imaging, and sensing applications.

关键词： Antenna measurements Cutoff frequency Imaging Bandwidth Sensors Frequency measurement Wearable antennas Telemetry Antennas Antenna radiation patterns

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Impact of Quaternary Pumped Storage Hydropower on Frequency Response of U.S. Western Interconnection with High Renewable Penetrations

Impact of Quaternary Pumped Storage Hydropower on Frequency ...

引用

2022 IEEE Power and Energy Society General Meeting, PESGM 2022

作者： Nag, Soumyadeep Dong, Zerui Tan, Jin Kim, Jinho Muljadi, Eduard Lee, Kwang Y. Jacobson, Mark Power System Engineering Center National Renewable Energy Laboratory GoldenCO United States Baylor University Dept. of Electrical and Computer Engineering WacoTX United States Auburn University Dept. of Electrical and Computer Engineering AuburnAL United States

ISBN: (数字)9781665408233

ISBN: (纸本)9781665408233

As renewable penetrations increase in the United States, maintaining the stability and reliability of low-inertia power grids by providing sufficient frequency control capabilities becomes a challenge. Advanced pumped storage hydropower (A-PSH) technologies will be expected to play an essential role in the future grid to provide energy and ancillary services. This paper studies the impact of using quaternary pumped storage hydropower (Q-PSH) as a newly proposed A-PSH technology to provide primary frequency response. To quantify the impact of Q-PSH on the frequency response of the U.S. Western Interconnection, a user-defined dynamic model of Q-PSH is developed in the GE Positive Sequence Load Flow (PSLF) software and is implemented in a set of detailed U.S. Western Electricity Coordinating Council planning cases, in which renewable penetration levels are 20%, 40%, 60%, and 80%. Simulation results show that Q-PSH can help improve the frequency nadir and the settling frequency compared to conventional PSH. © 2022 IEEE.

关键词： Frequency response

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Evaluating NGBoost as a Model for Probabilistic Prediction for V-Band Power Attenuation

Evaluating NGBoost as a Model for Probabilistic Prediction f...

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2023 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2023

作者： Gesner, Ralph L. Christodoulou, Christos G. Lane, Steven A. The University of New Mexico The Dept. of Electrical & Computer Engineering AlbuquerqueNM United States Airforce Research Laboratory Space Vehicles Kirtland AFB AlbuquerqueNM United States

ISBN: (纸本)9781665442282

A novel application of probabilistic prediction for estimating mm-wave attenuation due to varying weather conditions is developed. Validation of atmospheric propagation models in the W/V-bands has progressed greatly in past years, but the confidence of their predictions has not been validated. The Natural Gradient Boosting (NGBoost) algorithm is tested against a deep neural network to estimate atmospheric attenuation on a 72 GHz terrestrial link and to demonstrate the ability to produce prediction confidence estimates. © 2023 IEEE.

关键词： Deep neural networks

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Optimization Scheduling of Multi-Energy Microgrid Based on the QUBO Quantum Computing Model 19th

Optimization Scheduling of Multi-Energy Microgrid Based on t...

引用

19th Annual Conference of China Electrotechnical Society, ACCES 2024

作者： Wang, Baonan Wang, Hui Zhang, Dan College of Computer Science and Technology Shanghai University of Electric Power Shanghai China State Key Laboratory of Power System Operation and Control Dept. of Electrical Engineering Tsinghua University Beijing China Institute of Logistic Science and Engineering Shanghai Maritime University Shanghai China

ISBN: (纸本)9789819608966

Current optimization methods for microgrid scheduling face issues such as insufficient precision in energy distribution, high operational costs, and inefficiency. In response to these challenges, an optimization scheduling method for multi-energy microgrids based on the QUBO (Quadratic Unconstrained Binary Optimization) quantum computing model is proposed in this paper, alongside a discretization approach based on a grid partitioning strategy. To validate the feasibility of addressing microgrid optimization scheduling problems in a quantum computing environment, a QUBO model is constructed and simulation studies are conducted in the qbsolv environment provided by D-Wave. The results indicate that operational costs are significantly reduced with an increase in the number of grids, particularly a reduction of 4.52% when the number of grids increases from five to ten. This method not only effectively enhances the precision of electricity supply and energy utilization efficiency but also reduces unnecessary electrical waste and economic costs. © Beijing Paike Culture Commu. Co., Ltd. 2025.

关键词： Microgrids

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A Cascaded Multilevel Inverter System with Hot-Swapping and Fault Isolation Capability for Improved Resiliency 14

A Cascaded Multilevel Inverter System with Hot-Swapping and ...

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14th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2025

作者： Selvarasu, Uthandi Chowdhury, Vikram Roy Wang, Shumeng Zhu, Jinli Amirabadi, Mahshid Li, Yuan Lehman, Brad Northeastern University Dept. of Electrical & Computer Engineering Boston United States National Renewable Energy Laboratory GoldenCO United States University of Pittsburgh Dept. of Electrical & Computer Engineering Pittsburgh United States

ISBN: (纸本)9798331516116

The cascaded multilevel inverter (CMI) system is a promising solution for reliable inverter-based resource (IBR) applications due to its inherent modular redundancy. In the event of a fault, bypassing and isolating faulty sub-modules (SMs) within the CMI mitigates total system failure and enhances fault resiliency. However, hot-swapping a SM without interrupting the CMI presents implementation challenges. In this paper, a three phase CMI system is proposed for improved resiliency by hot-swapping the faulty SM without interrupting the system operation. Controllers were developed that permit hot-swapping of both grid forming and grid following CMIs. A power electronic module called AC smart port, is proposed and can successfully isolate the faulty SM from the system. A small-scale hardware prototype of a single-phase CMI with three H-bridge sub-modules has been successfully implemented for experimental validation. © 2025 IEEE.

关键词： Electric power transmission

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Pursuit-Evasion on a Sphere and When It Can Be Considered Flat 63

Pursuit-Evasion on a Sphere and When It Can Be Considered Fl...

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63rd IEEE Conference on Decision and Control, CDC 2024

作者： Milutinovic, Dejan Moll, Alexander Von Manyam, Satyanarayana G. Casbeer, David W. Weintraub, Isaac E. Pachter, Meir Electrical and Computer Engineering Dept. University of California Santa Cruz Santa CruzCA United States Control Science Center Aerospace Systems Directorate Air Force Research Laboratory DaytonOH45435 United States Dcs Corporation DaytonOH United States Air Force Institute of Technology Wright-Patterson Afb Dept. of Electrical Engineering OH United States

ISBN: (纸本)9798350316339

In planar pursuit-evasion differential games considering a faster pursuer and slower evader, the interception points resulting from equilibrium strategies lie on the Apollonius circle. This property is instrumental for leveraging geometric approaches for solving multiple pursuit-evasion scenarios in the plane. Here, we study a pursuit-evasion differential game on a sphere and generalize the planar Apollonius set to the spherical domain. We find that the interception point from the equilibrium strategies can leave the Apollonius set boundary and present a condition to keep the intercept point on the boundary. This condition allows for generalizing planar pursuitevasion strategies to the sphere. © 2024 IEEE.

关键词： Spheres

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