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3rd IEEE Industrial Electronics Society Annual On-Line Conference, ONCON 2024

作者： Navarro-Patron, G. Diaz-Sanahuja, C. Ordono, A. Guillamon-Ferrer, M. Ortiz-Cardenas, R. Penrrocha-Alos, I. Universitat Jaume I Department of Industrial Systems Engineering and Design Castelló de la Plana Spain Department of Electrical Engineering Eibar Spain

ISBN: (纸本)9798331540319

This work introduces a direct discrete-time multi-variable control strategy for grid-connected power converters using LCL filters in grid-following mode, specifically designed to manage inherent delays and prevent hidden oscillations in discrete implementation. It addresses the challenges of managing converter output current while considering grid variations and uncertainties introduced by other elements such as the Phase-Locked Loop (PLL), as well as the inherent delay in computation and Pulse Width Modulation (PWM) signal generation. The controller is defined as an structures state feedback control without the need of an observer, and it is designed to address the compromise between robustness (by minimizing the H-infinity norm of the sensitivity function), speed response (by guaranteeing a given decay rate), and noise amplification (by limiting the range of gain values). The gain computation is carried out by iteratively solving a set of Linear Matrix Inequalities problems through a Cone Complementarity Linearization. The proposed strategy is compared to traditional Proportional-Integral (PI) plus decouplers and feedforward temrs structures through comprehensive simulations, demonstrating its improved ability to handle weak grid scenarios. © 2024 IEEE.

关键词： Phase locked loops

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Cooperative nonlinear distributed model predictive control with dissimilar control horizons 63

Cooperative nonlinear distributed model predictive control w...

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63rd IEEE Conference on Decision and Control, CDC 2024

作者： Chanfreut, Paula Maestre, Jose M. Zhu, Quanyan Heemels, W.P.M.H. Maurice Eindhoven University of Technology Department of Mechanical Engineering Netherlands University of Seville Department of Systems and Automation Engineering Spain New York University Department of Electrical and Computer Engineering United States

ISBN: (纸本)9798350316339

In this paper, we introduce a nonlinear distributed model predictive control (DMPC) algorithm, which allows for dissimilar and time-varying control horizons among agents, thereby addressing a common limitation in current DMPC schemes. We consider cooperative agents with varying computational capabilities and operational objectives, each willing to manage varying numbers of optimization variables at each time step. Recursive feasibility and a non-increasing evolution of the optimal cost are proven for the proposed algorithm. Through numerical simulations on systems with three agents, we show that our approach effectively approximates the performance of traditional DMPC, while reducing the number of variables to be optimized. This advancement paves the way for a more decentralized yet coordinated control strategy in various applications, including power systems and traffic management. © 2024 IEEE.

关键词： Predictive control systems

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Control Performance Assessment of a Zero Harmonic Distortion Grid-Forming Converter in Islanded Microgrids 8

Control Performance Assessment of a Zero Harmonic Distortion...

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8th Southern Power Electronics Conference and the 17th Brazilian Power Electronics Conference, SPEC / COBEP 2023

作者： Ramos, Gabriel Vilkn Parreiras, Thiago Morais De Jesus Cardoso Filho, Braz Ufmg Graduate Program in Electrical Engineering Belo Horizonte Brazil CEFET-MG Department of Electrical Engineering Belo Horizonte Brazil Ufmg Department of Electrical Engineering Belo Horizonte Brazil

ISBN: (纸本)9798350321128

The world is currently witnessing a rapid transformation in the production and utilization of electrical energy. The traditional centralized generation model for electric power is swiftly evolving into a more decentralized system, known as Distributed Generation (DG), which incorporates renewable energy sources situated closer to end-users. This shift towards DG has paved the way for the emergence of grid-forming converters, which play a pivotal role in enhancing voltage and frequency stability within microgrids (MGs) and isolated applications. This transformation is primarily driven by the increasing prevalence of inverter-based energy resources. In isolated MGs, ensuring high power quality becomes a paramount concern due to the presence of potentially disruptive loads and the risk of resonance issues arising from the integration of multiple electronically interfaced distributed energy resources (DERs) and loads. This study focuses on assessing the performance of the Zero Harmonic Distortion (ZHD) control method when applied to grid-forming converters in both stand-alone and parallel operation modes. The distinctive feature of this converter lies in its inherent ability to generate a sinusoidal voltage source without the need for capacitive filtering components, which can adversely affect cost, efficiency, and size while potentially contributing to resonance problems. This is achieved through a judicious combination of harmonic cancellation within a three-winding transformer and the utilization of Selective Harmonic Elimination Pulse Width Modulation (SHE PWM) dismissing a closed-loop control structure. Simulation results presented in this work demonstrate the satisfactory performance of the ZHD grid-forming converter. © 2023 IEEE.

关键词： ac microgrids Distributed generation grid forming converters power converters power systems selective harmonic elimination

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Smart electrical Devices Control with Intrusion Detection Alert

International Journal of Interactive Mobile Technologies

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International Journal of Interactive Mobile Technologies 2022年第5期16卷 139-152页

作者： Achmad, Andani Muliadi Areni, Intan Sari Palantei, Elyas Hadis, Muhammad Sabirin Department of Electrical Engineering Faculty of Engineering Universitas Hasanuddin Gowa Indonesia Department of Electrical Engineering Education Faculty of Engineering Universitas Negeri Makassar Indonesia Study Program of Informatics STMIK AKBA Makassar Indonesia

The consumption profile of electrical energy always increases every year due to the highly consumptive and inappropriate lifestyles of modern society. A bad lifestyle such as forgetting to turn off the unused electronic devices when they are leaving home is one of the factors influenced the increasing consumption of electrical energy. This is off course contributing in wasting energy. In the paper, an IoT-based electronic device control system has been successfully constructed. Monitoring and control tasks could be performed remotely and in real time mode using an interface application installed on a smartphone. The system built is equipped with a device operational condition monitoring featured by placing light, temperature, thermal and current sensors, respectively. Through the utilization of the implemented system, users can monitor and control electronic devices easily and can figure out the condition of the device remotely in a real time mode. The control test on the system was successful with an average response time of approximately 3.32 seconds and the accuracy of sensor readings above 89%. With the implementation of this system, users can easily monitor and control electronic devices anywhere and anytime so that the opportunities for efficient and effective use of electrical energy could be further optimized. © 2022. All Rights Reserved.

关键词： Energy efficiency

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A Fuzzy-Descriptor-System-Based Control Design Methodology for Rotary Inverted Pendulum

A Fuzzy-Descriptor-System-Based Control Design Methodology f...

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2024 International Conference on Fuzzy Theory and Its Applications, iFUZZY 2024

作者： Mori, Nanami Chen, Ying-Jen Tanaka, Kazuo Yamamoto, Mei The University of Electro-Communications Department of Mechanical and Intelligent Systems Engineering Tokyo Japan Yuan Ze University Department of Electrical Engineering Taoyuan Taiwan

ISBN: (纸本)9798350352788

This paper presents a control design methodology for rotary inverted pendulum based on a fuzzy descriptor system. In this methodology, the nonlinear dynamics of the rotary inverted pendulum is exactly presented by a fuzzy descriptor system. After that, based on the fuzzy descriptor system and applying the Lyapunov stability theorem, a decay rate fuzzy control design is proposed for stabilizing the rotary inverted pendulum. Furthermore, for practical application, the constraint of input voltage is also considered in the control design. The control design is represented in terms of linear matrix inequality (LMI) conditions which can be efficiently solved by the LMI solvers of MATLAB Robust Control Toolbox. Finally, simulation and experiment results are provided to demonstrate the effectiveness of the proposed fuzzy-descriptor-system-based control design methodology. © 2024 IEEE.

关键词： Inverted pendulum

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Bridging the gap between theory and practice in local energy sharing - Energy communities in Croatia

Bridging the gap between theory and practice in local energy...

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2024 IEEE PES Innovative Smart Grid Technologies Europe Conference, ISGT EUROPE 2024

作者： Antić, Mirna Gržanić Capuder, Tomislav Medved, Tomi Faculty of Electrical Engineering and Computing University of Zagreb Department of Energy and Power Systems Croatia Faculty of Electrical Engineering University of Ljubljana Laboratory of Energy Policy Slovenia

ISBN: (纸本)9789531842976

The European directives focus on unlocking the potential of final customers in the clean energy transition. With the recent trend of rising electricity and petrol prices, coupled with reduced investment costs in low-carbon technologies, the installation of photovoltaic solar panels for end customers has become more profitable compared to previous years, leading to a shorter payback period. Additionally, to enhance citizen engagement in the integration of renewable energy sources, various forms of local energy-sharing models are discussed in the literature. This paper elaborates on the regulatory framework and policies at the European level concerning renewable energy communities, citizen energy communities, and collective self-consumption, with a particular focus on Croatia's perspective. It highlights the steps needed to accelerate the realization of energy communities in practice. Under current Croatian regulations, the profit from selling surplus community energy to the supplier cannot be directly remunerated to community members. The results indicate that community members could achieve 20% lower electricity costs annually if the surplus energy were directly remunerated. To avoid losing potential profits from excess energy, the paper models an investment in a community-owned battery storage system, aiming to increase community self-consumption and minimize the amount of energy sold to suppliers. It is shown that with a static sharing scheme, individual community members' costs can decrease by 11% to 16%, and by up to 20% with a dynamic scheme compared to cases where profit from excess energy cannot be directly remunerated to community members. © 2024 IEEE.

关键词： Clean energy

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Guest Editorial Special Issue on Self-Powered Sensors and Wearable Electronic systems

IEEE Journal on Flexible Electronics

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IEEE Journal on Flexible Electronics 2024年第4期3卷 118-119页

作者： Nag, Anindya Ozioko, Oliver Kim, Woo Soo Andrews, Joseph Technische Universität Dresden Faculty of Electrical and Computer Engineering Dresden01062 Germany Dresden01069 Germany University of Derby Department of Electrical and Electronic Engineering DerbyDE22 1GB United Kingdom Simon Fraser University School of Mechatronic Systems Engineering BurnabyBCV5A 1S6 Canada University of Wisconsin-Madison Department of Mechanical Engineering and Department of Electrical and Computer Engineering MadisonWI53706 United States

Wearable sensing has recently been highly preferred due to its quick and accurate measurement of physiological parameters. These sensors have been devised using various polymers [1], [2] and nanomaterials [3], [4] suited for the chosen application. With the exponential growth of wearable electronics [5], [6], [7], there is a need to broaden their capabilities in terms of functionality and availability. Commercializing these wearable electronics needs further encouragement to use these sensors as point-of-care devices. Self-powered sensors [8], [9] are one of the growing aspects in the sector of wearable sensing. With the growing requirement for energy usage, self-powered sensing systems need to be developed to generate and harvest energy ubiquitously [10], [11]. This Special Issue highlights some of the published papers that work on using smart textiles and self-powered devices for efficient and sustainable sensing applications. © 2022 IEEE.

关键词： Wearable sensors

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Compact deep-groove-assisted bends on SiN platform for monolithic integrated laser

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Optics Express 2025年第3期33卷 4383-4395页

作者： Zhang, Ziyao Skandalos, Ilias Ma, Rui Chen, Minjia Sun, Bohao Zhong, Chuan Gardes, Frederic Cheng, Qixiang Penty, Richard Centre for Photonic Systems Electrical Engineering Division Department of Engineering University of Cambridge CambridgeCB3 0FA United Kingdom Optoelectronics Research Centre University of Southampton SouthamptonSO17 1BJ United Kingdom Electrical and Computer Engineering Princeton University PrincetonNJ08544 United States

To build a photonic integration platform that incorporates monolithically integrated light sources which require minimized loss and reflection, a micro-meter scale passive layer is needed in addition to the III-V layer. Low temperature plasma-enhanced chemical vapor deposition (PECVD) silicon nitride (SiN) is a promising candidate, owing to its back-end-of-line (BEOL) integration capabilities, along with its amorphous structure that allows the growth of defect-free thick layers. In view of the III-V layer stack, the optimized SiN waveguides are thick and in a rib formation. However, bends on this thick SiN platform suffer from high radiation losses, resulting in the need for a bending radius as large as 800 µm that poses challenges for compact photonic integrated circuits (PICs). This paper describes and demonstrates a novel SiN bending structure with a deep etched groove along the outer side. This structure significantly reduces the bending radii to 37 µm with a bending loss of 0.1 dB/90°. A compact micro-ring resonator (MRR) with deep etched grooves is also investigated, exhibiting a substantial enhancement in the free spectral range (FSR) compared with the rib waveguide MRRs, while offering a passband of 39.1 GHz. These notable performance improvements pave the way for compact integrated emitters on a single substrate. © 2025 Optica Publishing Group (formerly OSA). All rights reserved.

关键词： Silicon nitride

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Double-E-Triple-H-Shaped NRI-Metamaterial for Dual-Band Microwave Sensing Applications

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Computers, Materials & Continua 2022年第6期71卷 5817-5836页

作者： Shafayat Hossain Md.Iquebal Hossain Patwary Sikder Sunbeam Islam Sultan Mahmud Norbahiah Binti Misran Ali F.Almutairi Mohammad Tariqul Islam Department of Electrical&Electronics Engineering International Islamic University Chittagong4318ChittagongBangladesh Department of Electrical Electronic and Systems EngineeringFaculty of Engineering and Built EnvironmentUniversiti Kebangsaan MalaysiaBangiSelangor43600Malaysia Electrical Engineering Department Kuwait UniversityKuwait City13060Kuwait

This paper presents a new Double-E-Triple-H-Shaped NRI(negative refractive index)metamaterial(MM)for dual-band microwave sensing ***,a horizontal H-shaped metal structure is enclosed by two face-to-face E-shaped metal *** double-E-H-shaped design is also encased by two vertical H-shaped structures along with some copper ***,the Double-E-Triple-H-Shaped configuration is *** popular substrate materials of Rogers RO 3010 and FR-4 were adopted for analyzing the characteristics of the unit *** proposed structure exhibits transmission resonance inside the S-band with NRI and ENG(Epsilon Negative)metamaterial properties,and inside the C-band with ENG and MNG(Mu Negative)metamaterial properties.A good effective medium ratio(EMR)of 8.06 indicates the compactness and effectiveness of the proposed *** analysis has been done by changing the thickness of the substrate material as well and a significant change in the effective medium ratio is *** validity of the proposed structure is confirmed by an equivalent circuit *** simulated result agrees well with the calculated *** exploring microwave sensing applications of the proposed unit cell,permittivity and pressure sensitivity performance were investigated in different simulation *** compact size,effective parameters,high sensitivity and a good EMR represent the proposed metamaterial as a promising solution for S-band and C-band microwave sensing applications.

关键词： Metamaterial NRI MNG ENG dual-band sensing S-band C-band

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IMPACT OF TEMPERATURE ON EV CHARGING AND THE DISTRIBUTION NETWORK 5

IMPACT OF TEMPERATURE ON EV CHARGING AND THE DISTRIBUTION NE...

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5th Conference on Code of Practice for Electric Vehicle Charging Equipment Installation: Charging Ahead, EVI 2023

作者： Jia, Zixuan Donaldson, Daniel L. Zhang, Xiao-Ping Department of Electronic Electrical and Systems Engineering School of Engineering University of Birmingham Birmingham United Kingdom

ISBN: (纸本)9781839539848

Widespread electric vehicle (EV) adoption is occurring as countries move to decarbonise transportation. However, EV charging can have an impact on the distribution network, as operators ensure that voltage, current and capacity limits are satisfied. Therefore, electric vehicle profiles become a key input to planning assessments. Weather can affect the driving habits of EV users, charging behaviour and charging efficiency, altering these profiles. This paper investigates the significance of temperature on EV charging profiles using at home EV charging records and local temperatures in Austin (Texas, US). At the same time, the impact of different EV charging behaviours on the distribution network is illustrated. The results argue that EV charging demand is temperature sensitive, and only using average EV charging profiles could significantly underestimate peak demand. Therefore, network planning should account for temperature variations when determining electric vehicle hosting capacity and charging infrastructure needs. © The Institution of engineering & Technology 2023.

关键词： Charging (batteries)

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