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Lyapunov-Function Based Control Technique for a Single-Phase Grid-Connected Five-Level Active Neutral Point Clamped Flying Capacitor Inverter with LCL Filter 17

Lyapunov-Function Based Control Technique for a Single-Phase...

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17th IEEE International Conference on Compatibility, Power electronics and Power engineering, CPE-POWERENG 2023

作者： Fesli, Ugur Bayhan, Sertac Guler, Naki Komurcugil, Hasan Gazi University Technical Sciences Vocational School Electronic and Automation Department Ankara Turkey Hamad Bin Khalifa University Qatar Environment and Energy Research Institute Doha Qatar Technology Faculty Gazi University Department of Electrical-Electronic Engineering Ankara Turkey Eastern Mediterranean University Department of Computer Engineering Via Mersin 10 Famagusta Turkey

ISBN: (纸本)9798350300048

This paper presents Lyapunov-function based control technique for a grid-connected five-level active neutral point clamped flying capacitor (ANPC-FC) inverter with LCL filter. The control technique used in this study ensures global stability of the closed-loop system and almost zero steady-state error in the grid current. A proportional resonant (PR) controller is also employed in the control scheme to generate the required reference value for the inverter current. In addition, a simple phase shift pulse width modulation (PSPWM) technique is used for resolving voltage imbalances between dc-link capacitors and floating capacitors without the use of complicated circuitry or sensors. Simulation results validate the performance of the proposed system. Studies conducted at steady state and in dynamic mode demonstrate excellent results. © 2023 IEEE.

关键词： Lyapunov functions

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Performance Evaluation of Two Dimensional Photonic Crystal Based All Optical AND/OR Logic Gates

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Journal of Optical Communications 2021年第3期42卷 397-407页

作者： Jayabarathan, Jayson K Subhalakshmi, G. Robinson, S. Department of Computer Science and Engineering Mount Zion College of Engineering and Technology Tamil Nadu Pudukkottai622507 India Department of Electronic and Communication Engineering Mount Zion College of Engineering and Technology Tamil Nadu Pudukkottai622507 India

In this paper, OR and AND logic gate functions are realized in a triangular lattice using two dimensional photonic crystal (2DPC). The proposed design of logic gates are based on the phenomenon of resonance and interference. The OR and AND logic gates are constructed by varying the rod radius and by creating Y-shaped waveguide in the structure. Initially, the OR gate is designed with reference input and without reference input and it's extended for AND gate. The functional parameters of the logic gates such as response period, bit rate, contrast ratio and field distribution of different logics are investigated through 2D finite difference time domain (FDTD) method. The contrast ratio, response period, bit rate and size of the three input OR gate are 30 dB, 0.52 ps, 1.92 Tbps and 12.6 μm×11 μm, respectively. Similarly, the aforementioned parameters are estimated for two input OR gate, two input AND gate and three input AND gate. The proposed logic gates are highly desirable for integrated optics. © 2018 Walter de Gruyter GmbH, Berlin/Boston 2018.

关键词： Finite difference time domain method

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A Novel Method for Monitoring and Controlling the Electrical Parameters in Industrial Applications Using IoT Technology 1

A Novel Method for Monitoring and Controlling the Electrical...

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1st IEEE International Conference on Smart and Sustainable Developments in Electrical engineering, SSDEE 2025

作者： Muthusamy, Suresh Duraisamy, Sarathkumar Ramachandran, Meenakumari Vadivel, Surendar Kavitha, V. Kumar, T. Suresh Ramanathan, Praveen Kumar Ravikumar, Rahul Rajendran Mohanraj, Sanjay Balaji Department of Electrical and Electronics Engineering Perundurai Tamil Nadu Erode India Department of Electrical and Electronics Engineering Tiruval Kavaraipettai Gummidipoondi India Department of Computer Science and Engineering Erode Thindal India AVS Engineering College Department of Computer Science and Engineering Salem India Department of Electrical and Electronic Engineering Perundurai Tamil Nadu Erode India

ISBN: (纸本)9798331542108

The proposed system will introduce an IoT-based smart energy monitoring solution to enhance real-time tracking and management of electrical parameters, using the ESP32 Wi-Fi module as the core processing unit. The system integrates current and voltage sensors for accurate measurement of electricity consumption. These sensors capture electrical parameters processed and calibrated by the ESP32 so that power usage and energy consumption can be considered in their calculation. The processed data is then transmitted to the cloud, where users can now monitor and control their energy consumption using the Blynk mobile application. For example, this innovative system features live monitoring of electrical parameters, customizable alerts for abnormal consumption, and remote device control via relay module. These are then integrated into the system, which is useful in the management of energy for residential and commercial purposes, thus contributing to the conservation of energy that promotes sustainability and sound energy practice. © 2025 IEEE.

关键词： Electric power measurement

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Design and Implementation of a 6.78-MHz Wireless Charger for E-bike Applications 6

Design and Implementation of a 6.78-MHz Wireless Charger for...

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6th International Future Energy electronics Conference, IFEEC 2023

作者： Chen, Yun-Yen Fang, Yi-Hung Chen, Chen Chen, Kai-De Liu, Yu-Chen Chiu, Huang-Jen National Taiwan University of Science and Technology Department of Electronic and Computer Engineering Taipei Taiwan Cips LITE-ON Technology Taipei Taiwan Center of Core Competence LITE-ON Technology Taipei Taiwan National Taipei University of Technology Department of Electrical Engineering Taipei Taiwan

ISBN: (纸本)9798350339888

This paper presents a significant contribution in the development of a high-efficiency, high-power-density wireless charger for E-bikes. By utilizing a 6.78 MHz switching frequency and employing wide band gap devices (GaN) and Schottky diodes, the system achieves remarkable advancements in power component selection, leading to reduced switching losses and improved performance. Moreover, the integration of high-frequency magnetic materials in the coils enhances coupling and minimizes the impact on the surrounding magnetic field. The use of Maxwell analysis software enables accurate simulation and optimization of the circuit, coil, and core design. By addressing phase-related challenges through the implementation of an auxiliary circuit, the issue of voltage switching is effectively mitigated. Ultimately, the achieved wireless charger for E-bikes stands out with its 110V input/output voltage, 240W output power, 6.78 MHz switching frequency, and an impressive maximum efficiency of 92.45%. This research contributes significantly to the advancement of wireless charging technology for E-bikes, offering valuable insights for further development and practical applications in the field. © 2023 IEEE.

关键词： Energy gap

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A Joint Communication and Learning Design for Secure Federated Learning with Differential Privacy 100

A Joint Communication and Learning Design for Secure Federat...

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100th IEEE Vehicular Technology Conference, VTC 2024-Fall

作者： Lin, Licheng Yang, Zhaohui Yang, Qianqian Chen, Mingzhe Zhejiang University College of Information Science and Electronic Engineering Hangzhou310027 China University of Miami Department of Electrical and Computer Engineering Coral GablesFL33146 United States University of Miami Frost Institute for Data Science and Computing Coral GablesFL33146 United States

ISBN: (纸本)9798331517786

In this paper, the problem of resource allocation for non-orthogonal multiple access (NOMA) enabled secure federated learning (FL) is investigated. In the considered model, a set of users participate in the FL training through transmitting their trained FL model parameters to the base stations (BSs) via NOMA techniques. To prevent data leakage, each user uses the differential privacy (DP) technique through adding Gaussian noise to its FL model parameters. The problem of minimizing overall privacy leakage of all FL participaring users is formulated as an optimization problem through jointly optimizing the connections between users and BSs, transmit power of the users, and the DP noise power. To solve the formulated non-convex optimization problem, a genetic algorithm is proposed to search for feasible solutions in which user connection matrix is taken as gene and the objective function value is taken as the fitness of solution. Simulation results show that the proposed genetic algorithm reduces privacy leakage by up to 73% compared to the conventional alternating optimization algorithm. © 2024 IEEE.

关键词： Federated learning

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High Voltage Selective Global Flexible Power Point Tracking for Photovoltaic Systems

High Voltage Selective Global Flexible Power Point Tracking ...

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2023 IEEE Energy Conversion Congress and Exposition, ECCE 2023

作者： Kumaresan, Anusha Tafti, Hossein Dehghani Farivar, Glen G. Beniwal, Neha Yadav Gorla, Naga Brahmendra Pou, Josep Strunz, Kai Energy Research Institute Ntu Interdisciplinary Graduate Programme Nanyang Technological University Singapore University of Western Australia Department of Electrical Electronic and Computer Engineering Australia The University of Melbourne Department of Electrical and Electronic Engineering Victoria3010 Australia Ge Global Research New York United States Indian Institute of Technology Department of Electrical Engineering Kerala Palakkad India Nanyang Technological University School of Electrical and Electronic Engineering Singapore Technische Universität Chair for Sustainable Electric Networks and Sources of Energy Berlin Germany

ISBN: (纸本)9798350316445

To provide frequency support in grid-connected photovoltaic (PV) systems with low inertia, flexible power point tracking (FPPT) control algorithms have been developed in the literature. To achieve this, a power reference obtained from the energy management system is used to control the PV output power. For PV systems to operate with FPPT, the frequent phenomenon of partial shading of PV arrays must be investigated. Among the multiple operating points possible for a given power reference, the one with a high voltage level should be selected in order to minimize the current stress on the semiconductor devices and to reduce the converter thermal stress. This work proposes an improved secant method to achieve this objective, which converges to a voltage reference that is higher than the global maximum power point voltage. The performance of the proposed high voltage selective global FPPT algorithm is validated through simulations in MATLAB-Simulink and experiments conducted on a scaled-down laboratory test setup. © 2023 IEEE.

关键词： Active power control flexible power point tracking frequency support photovoltaic (PV) systems secant algorithm

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Square Binary Patterns: A Non-Circular Approach for Local Binary Patterns

IAENG International Journal of Computer Science

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IAENG International Journal of computer Science 2025年第6期52卷 1616-1626页

作者： Putra, Muhammad Ardi Harjoko, Agus Wahyono Jo, Kanghyun Department of Computer Science and Electronics Universitas Gadjah Mada Yogyakarta Indonesia Department of Computer Science and Electronics Universitas Gadjah Mada Yogyakarta Indonesia Department of Electrical Electronic and Computer Engineering University of Ulsan Ulsan Korea Republic of

Local Binary Patterns (LBP) is one of many image features suitable for enhancing textures within an image. Despite its popularity, this feature as well as its variants actually still has some drawbacks: requiring the use of bilinear interpolation mechanism which leads to a computational bottleneck, being unable to capture macrostructures, and being prone to noise. The objective of this research is to propose a novel image feature named Square Binary Patterns (SBP) which is intended to solve the mentioned problems. Experiments were conducted using four texture datasets, namely KTH-TIPS, KTH-TIPS2-b, ALOT, and the texture dataset we created on our own. The existing LBP-based features including LBPriu2, LBPu2, LBPri, MS-LBP, LTP, FbLBP and ILBP are directly compared with SBP. The quality of these features is obtained by observing the classification accuracy of separate SVM models. The classifier which produces higher accuracy implies that its corresponding feature contains a more important information regarding the textures. Experimental results showed that our best-performing SBP variant was able to work 2.98 times faster than the conventional LBP while at the same time capable of producing accuracy comparable to that of the existing LBP-based features. This paper makes a significant contribution through the introduction of the SBP algorithm and the creation of a novel texture dataset. © (2025), (International Association of Engineers). All rights reserved.

关键词： Feature Selection

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Autonomous Power and Dynamic Load Management in Grid-Connected Microgrid with Supercapacitor and EV Integration

Autonomous Power and Dynamic Load Management in Grid-Connect...

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International Conference on Electrical, computer and Communication engineering (ECCE)

作者： Md. Badoruzzaman Jahidul Islam Shuvo Shaikh Tawhidul Islam Anik Md Salman Khan Mithil HM Farhan Unjum A.S. Nazmul Huda Shameem Ahmad Department of Electrical and Electronic Engineering Faculty of Engineering American International University–Bangladesh Dhaka Bangladesh Department of Electrical Engineering and Computer Science Electrical Engineering (MS) South Dakota School of Mines & Technology Rapid City United States Department of Electrical and Electronic Engineering BSRM School of Engineering BRAC University Dhaka Bangladesh

ISBN: (数字)9798350357509

ISBN: (纸本)9798350357516

The rising adoption of renewable energy sources (RESs) and electric vehicles (EVs) has made microgrids (MGs) essential for modern energy management. Integration with EV chargers with dynamic loads poses challenges such as fluctuating power supply, unstable grid operations, and limited load control, which conventional battery storage systems (BSSs) struggle to address effectively. An enhanced dynamic energy management strategy (DEMS) for photovoltaic (PV) integrated MG with supercapacitor (SC) storage, grid connectivity, and optimized power distribution for AC and EV charging demand is presented in this study. The SC storage provides instantaneous power stabilization, surpassing conventional systems in managing fluctuations and transient conditions. The proposed system utilizes a DEMS algorithm to optimize the balance among energy generation, storage, and consumption, which ensures reliable and efficient operation. The system’s performance was validated in MATLAB/Simulink under various scenarios. Results show that the PV system operates with 99.7% efficiency, fully meeting the load demand and charging the SC with the excess power. During PV insufficiency, the SC contributes 30.83% of the load, while the PV system provides 69.17%. When both PV and SC support are limited, the grid supplies 60% of the load demand, with the PV system covering the remaining 40%. The system enhances resilience by effectively managing dynamic loads, thereby promoting the shift to sustainable, adaptable, and robust energy solutions.

关键词： Renewable energy sources Fluctuations Microgrids Supercapacitors Load management Electric vehicle charging Stability analysis Vehicle dynamics Transient analysis MATLAB

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Performative Control for Linear Dynamical Systems

arXiv

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arXiv 2024年

作者： Cai, Songfu Han, Fei Cao, Xuanyu Department of Electronic and Computer Engineering The Hong Kong University of Science and Technology Hong Kong

We introduce the framework of performative control, where the policy chosen by the controller affects the underlying dynamics of the control system. This results in a sequence of policy-dependent system state data with policy-dependent temporal correlations. Following the recent literature on performative prediction [21], we introduce the concept of a performatively stable control (PSC) solution. We first propose a sufficient condition for the performative control problem to admit a unique PSC solution with a problem-specific structure of distributional sensitivity propagation and aggregation. We further analyze the impacts of system stability on the existence of the PSC solution. Specifically, for almost surely strongly stable policy-dependent dynamics, the PSC solution exists if the sum of the distributional sensitivities is small enough. However, for almost surely unstable policy-dependent dynamics, the existence of the PSC solution will necessitate a temporally backward decaying of the distributional sensitivities. We finally provide a repeated stochastic gradient descent scheme that converges to the PSC solution and analyze its non-asymptotic convergence rate. Numerical results validate our theoretical *** Codes 93C06 (Primary) 68T06, 37N06 (Secondary) © 2024, CC BY.

关键词： Stochastic systems

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VINS-Multi: A Robust Asynchronous Multi-camera-IMU State Estimator

arXiv

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arXiv 2024年

作者： Wang, Luqi Xu, Yang Shen, Shaojie The Department of Electronic and Computer Engineering Hong Kong University of Science and Technology Hong Kong

State estimation is a critical foundational module in robotics applications, where robustness and performance are paramount. Although in recent years, many works have been focusing on improving one of the most widely adopted state estimation methods, visual inertial odometry (VIO), by incorporating multiple cameras, these efforts predominantly address synchronous camera systems. Asynchronous cameras, which offer simpler hardware configurations and enhanced resilience, have been largely overlooked. To fill this gap, this paper presents VINS-Multi, a novel multi-camera-IMU state estimator for asynchronous cameras. The estimator comprises parallel front ends, a front end coordinator, and a back end optimization module capable of handling asynchronous input frames. It utilizes the frames effectively through a dynamic feature number allocation and a frame priority coordination strategy. The proposed estimator is integrated into a customized quadrotor platform and tested in multiple realistic and challenging scenarios to validate its practicality. Additionally, comprehensive benchmark results are provided to showcase the robustness and superior performance of the proposed estimator. © 2024, CC BY.

关键词： State estimation

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