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3rd International Conference on Advanced electrical engineering, ICAEE 2024

作者： Bechekir, Seyf Eddine Belabed, Meriem Brahami, Mostefa Jbilou, Mokhtaria Nemmich, Said Marref, Mohemed Amine Djillali Liabes University of Sidi Bel-Abbes Intelligent Control and Electrical Power Systems Laboratory Department of Electrical Engineering Algeria Algeria Djillali Liabes University of Sidi Bel-Abbes Intelligent Control and Electrical Power Systems Laboratory Algeria Institute of Applied Sciences and Technologies University of Sciences and Technology of Oran Mb Algeria

ISBN: (纸本)9798350349351

This paper presents the implementation of a half-bridge resonant inverter to power a dielectric barrier discharge (DBD) ozone generator. We use the PIC16F876A microcontroller-based control circuit to vary the inverter frequency. We use a step-up transformer to obtain the high voltage required for the DBD. We conducted an experimental study to investigate the impact of frequency and voltage on ozone production and power consumption. The results show that these two parameters have a strong influence. This study demonstrates the advantages of using a resonant inverter combined with optimum electrical parameter adjustment to achieve excellent energy efficiency for the DBD ozone generator. The choice of a resonant half-bridge topology aims to maximize energy efficiency, crucial in a solar-powered system. The circuit has been optimized to reduce switching losses. In addition, the development of the power source takes into account the capacitive nature of DBD reactors, using a series resonant circuit formed by the DBD capacitance and the step-up transformer inductance. The frequency range from 14 kHz to 17.5 kHz has been specifically chosen and optimized for the DBD reactor, taking into account the constraints of the PV source and the characteristics of the discharge. © 2024 IEEE.

关键词： Resonant circuits

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A Market-Clearing-Based Sensitivity Model for Locational Marginal and Average Carbon Emission

IEEE Transactions on Energy Markets, Policy and Regulation

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IEEE Transactions on Energy Markets, Policy and Regulation 2024年第4期2卷 579-582页

作者： Lu, Zelong Yan, Lei Wang, Jianxue Kang, Chongqing Shahidehpour, Mohammad Li, Zuyi Xi'an Jiaotong University School of Electrical Engineeng Xi'an710049 China Zhejiang University College of Electrical Engineering Hangzhou310027 China Tsinghua University State Key Lab of Power Systems Department of Electrical Engineering Beijing100084 China Illinois Institute of Technology Department of Electrical and Computer Engineering ChicagoIL60616 United States

This letter proposes a market-clearing-based locational marginal carbon emission (LMCE) metric to assess the marginal carbon emission effect of nodal load demand. Unlike the prevalent carbon emission flow (CEF) method that relies on a hypothetical power-flow tracking process, the proposed LMCE metric depends on a novel sensitivity analysis of market-clearing results, capable of revealing both energy-dependent and network-dependent impacts on emissions. Additionally, we introduce a locational average carbon emission (LACE) metric, derived from LMCE, to effectively measure the general emission effect. It offers insights into demand-side carbon emission effects, such as a negative LMCE and LACE indicating emission reduction even as load increases. It can also prevent excessive demand-side emission allocations. Overall, the proposed method provides a clear perspective for the ongoing decarbonization policies. © 2024 IEEE.

关键词： Sensitivity analysis

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Model-based Loss Minimization Control of a Squirrel cage Induction Motor Drive with shorted Rotor under Indirect Field Orientation

Model-based Loss Minimization Control of a Squirrel cage Ind...

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2023 IEEE Conference on Control Technology and Applications, CCTA 2023

作者： Olajube, Ayobami Anubi, Olugbenga Moses Florida State University FAMU-FSU College of Engineering Center for Advanced Power Systems Department of Electrical and Computer Engineering United States

ISBN: (纸本)9798350335446

This paper presents the development of an energy saving scheme via indirect field oriented control (IFOC) at the optimum operating region. A model-based steady state power loss analysis is carried out to determine the optimal speed and the optimal rotor flux that will serve as reference for the speed and torque tracking control. IFOC ensures the decoupled control of the torque and flux components of the stator current in a similar version as in DC drives through rotor flux orientation. The need for multiple sensors is eliminated by the analytical loss model approach, leading to an appreciable cost reduction. PI controller is used for the independent control of the flux and the torque producing components of the stator current. This is done at steady state, using the optimal rotor flux and speed computed in a loss minimization algorithm. The gains for optimum performance of the PI controller is selected via genetic algorithm (GA) optimization technique. The developed scheme is validated via a realistic numerical simulation and, the shorted rotor induction machine shows a very efficient speed and torque tracking performance at various load conditions and speed settings. © 2023 IEEE.

关键词： Induction machine

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High-Performance Voltage Control for Dual-ThreePhase Permanent Magnet Synchronous Generators: Ensuring Stability Over a Wide Speed Spectrum 11

High-Performance Voltage Control for Dual-ThreePhase Permane...

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11th International Conference on power and Energy systems engineering, CPESE 2024

作者： Guo, Jing Zhang, Dong Meng, Liu Li, Qi Li, Hongyang Zhang, Shaokun Fan, Tao Wen, Xuhui Institute of Electrical Engineering Chinese Academy of Sciences Key Laboratory of High Density Electromagnetic Power and Systems Chinese Academy of Sciences Beijing China

ISBN: (纸本)9798350377439

This paper introduces an innovative voltage regulation control strategy for a wide-speed-range double threephase permanent magnet synchronous motor (PMSM) under dynamic load conditions. The strategy is based on the variance of the voltage squared as an input to the outer loop ProportionalIntegral (PI) controller. A method for determining the voltage loop control parameters that adapt to variations in motor parameters, controller parameters, and rotational speed is also provided. The study demonstrates that the power generation system maintains excellent voltage tracking and robustness against load disturbances across a broad speed range from 300 to 3800 revolutions per minute (rpm). The implementation of this control strategy has achieved high-performance voltage regulation, effectively addressing a significant challenge in the field. The experimental outcomes validate the accuracy and efficacy of the proposed control strategy, substantiating its practical applicability and potential for industrial implementation. © 2024 IEEE.

关键词： Permanent magnets

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Coordinated Control of Second-order Harmonic Voltage and Current Fluctuations in Cascaded H-bridge Inverter with Supercapacitor and DC-DC Stage at Variable Output Frequencies

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CES Transactions on electrical Machines and systems 2024年第4期8卷 481-492页

作者： Ye Zhang Zixin Li Fanqiang Gao Jinhao Zhang Cong Zhao Yaohua Li IEEE Key Laboratory of High Density Electromagnetic Power and Systems(Chinese Academy of Sciences) Institute of Electrical EngineeringChinese Academy of SciencesHaidian DistrictBeijing 100190China University of Chinese Academy of Sciences Shijingshan DistrictBeijing 100049China

In the cascaded H-bridge inverter(CHBI)with supercapacitor and dc-dc stage,inherent second-order harmonic power flows through each submodule(SM),causing fluctuations in both the dc-link voltage and the dc-dc *** exist limitations in handling these fluctuations at variable output frequencies when employing proportional-integral(PI)control to the dc-dc *** paper aims to coordinately control these second-order harmonic voltage and current fluctuations in the *** presented method configures a specific second-order harmonic voltage reference,equipped with a maximum voltage fluctuation constraint and a suitable phase,for the dc-dc stage.A PI-resonant controller is used to track the configured *** allows for regulating the second-order harmonic fluctuation in the average dc-link voltage among the SMs within a certain ***,the second-order harmonic fluctuation in the dc-dc current can also be *** and experimental results demonstrate the effectiveness of the presented method.

关键词： Cascaded H-bridge inverter(CHBI) DC-DC current reduction Second-order harmonic fluctuation Variable frequencies Proportional-integral-resonant

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GLinSAT: The General Linear Satisfiability Neural Network Layer By Accelerated Gradient Descent 38

GLinSAT: The General Linear Satisfiability Neural Network La...

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38th Conference on Neural Information Processing systems, NeurIPS 2024

作者： Zeng, Hongtai Yang, Chao Zhou, Yanzhen Yang, Cheng Guo, Qinglai State Key Laboratory of Power Systems Department of Electrical Engineering Tsinghua University China Decision Intelligence Lab Alibaba DAMO Academy China

Ensuring that the outputs of neural networks satisfy specific constraints is crucial for applying neural networks to real-life decision-making problems. In this paper, we consider making a batch of neural network outputs satisfy bounded and general linear constraints. We first reformulate the neural network output projection problem as an entropy-regularized linear programming problem. We show that such a problem can be equivalently transformed into an unconstrained convex optimization problem with Lipschitz continuous gradient according to the duality theorem. Then, based on an accelerated gradient descent algorithm with numerical performance enhancement, we present our architecture, GLinSAT, to solve the problem. To the best of our knowledge, this is the first general linear satisfiability layer in which all the operations are differentiable and matrix-factorization-free. Despite the fact that we can explicitly perform backpropagation based on automatic differentiation mechanism, we also provide an alternative approach in GLinSAT to calculate the derivatives based on implicit differentiation of the optimality condition. Experimental results on constrained traveling salesman problems, partial graph matching with outliers, predictive portfolio allocation and power system unit commitment demonstrate the advantages of GLinSAT over existing satisfiability layers. Our implementation is available at https://***/HunterTracer/GLinSAT. © 2024 Neural information processing systems foundation. All rights reserved.

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A Survey of Cyber Attacks on Cyber Physical systems:Recent Advances and Challenges

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IEEE/CAA Journal of Automatica Sinica 2022年第5期9卷 784-800页

作者： Wenli Duo MengChu Zhou Abdullah Abusorrah Macao Institute of Systems Engineering Macao University of Science and TechnologyMacao 999078China IEEE Department of Electrical and Computer Engineering K.A.CARE Energy Research and Innovation Center Department of Electrical and Computer Engineering K.A.CARE Energy Research and Innovation Center and Center of Research Excellence in Renewable Energy and Power SystemsKing Abdulaziz University

A cyber physical system(CPS)is a complex system that integrates sensing,computation,control and networking into physical processes and objects over *** plays a key role in modern industry since it connects physical and cyber *** order to meet ever-changing industrial requirements,its structures and functions are constantly ***,new security issues have arisen.A ubiquitous problem is the fact that cyber attacks can cause significant damage to industrial systems,and thus has gained increasing attention from researchers and *** paper presents a survey of state-of-the-art results of cyber attacks on cyber physical ***,as typical system models are employed to study these systems,time-driven and event-driven systems are ***,recent advances on three types of attacks,i.e.,those on availability,integrity,and confidentiality are *** particular,the detailed studies on availability and integrity attacks are introduced from the perspective of attackers and ***,both attack and defense strategies are discussed based on different system *** challenges and open issues are indicated to guide future research and inspire the further exploration of this increasingly important area.

关键词： Attack detection attack strategy cyber attack cyber physical system(CPS) secure control

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Sharing Economy in Local Energy Markets

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Journal of Modern power systems and Clean Energy 2023年第3期11卷 714-726页

作者： Zhaoyuan Wu Jianxiao Wang Haiwang Zhong Feng Gao Tianjiao Pu Chin-Woo Tan Xiupeng Chen Gengyin Li Huiru Zhao Ming Zhou Qing Xia School of Economics and Management North China Electric Power UniversityBeijing 102206China State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power UniversityBeijing 102206China National Engineering Laboratory for Big Data Analysis and Applications Peking UniversityBeijing 100871China State Key Lab of Power Systems Department of Electrical EngineeringTsinghua UniversityBeijing 100084China Department of Industrial Engineering and Management College of EngineeringPeking UniversityBeijing 100871China China Electric Power Research Institute Beijing 100192China Department of Civil and Environmental Engineering Stanford UniversityPalo AltoCA 94305USA Engineering and Technology Institute Groningen University of Groningen9742 AG Groningenthe Netherlands

With an increase in the electrification of end-use sectors,various resources on the demand side provide great flexibility potential for system operation,which also leads to problems such as the strong randomness of power consumption behavior,the low utilization rate of flexible resources,and difficulties in cost *** the core idea of“access over ownership”,the concept of the sharing economy has gained substantial popularity in the local energy market in recent ***,we provide an overview of the potential market design for the sharing economy in local energy markets(LEMs)and conduct a detailed review of research related to local energy sharing,enabling technologies,and potential *** paper can provide a useful reference and insights for the activation of demand-side flexibility ***,this paper can also provide novel insights into the development and further integration of the sharing economy in LEMs.

关键词： Energy sharing flexibility potential local energy market information and communication technology sharing economy

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Selective Secondary Phase-Shift Control for High Gain in LLC Converters with Matrix Transformers

Selective Secondary Phase-Shift Control for High Gain in LLC...

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2024 IEEE Energy Conversion Congress and Exposition, ECCE 2024

作者： Prakash, Pranav Raj Li, Qiang Virginia Polytechnic Institute and State University Center for Power Electronics Systems The Bradley Department of Electrical and Computer Engineering BlacksburgVA24061 United States

ISBN: (纸本)9798350376067

Many applications such as datacenters and electric vehicles require well-regulated isolated DC-DC power converters. However, these often require high voltage gains for a wide input voltage range or when the input supply is lost. Although resonant converters, especially LLC converters, are great candidates for such dc-dc converters, their performance at the nominal operating conditions must be sacrificed to enable the converter to reach high gain levels with the conventional frequency modulation. Matrix transformers are commonly employed to distribute the high output currents evenly among the different elemental transformers. This paper proposes a control method to utilize matrix transformers to achieve high gains while operating at the resonant frequency. One or more secondary rectifiers (SRs) can be phase-shifted with respect to the other SRs to create periods where the transformer windings are partially shorted, resulting in a precise boost to the resonant tank energy, and hence, the resonant tank gain. This technique is implemented on a 400 V/12 V LLC converter for datacenters that requires high transformer gains during the hold-up period. © 2024 IEEE.

关键词： Phase shift

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Orbiting Optimization Model for Tracking Voltage Security Region Boundary in Bulk power Grids

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CSEE Journal of power and Energy systems 2022年第2期8卷 476-487页

作者： Xue Li Tao Jiang Linquan Bai Xiao Kou Fangxing Li Houhe Chen Guoqing Li the Department of Electrical Engineering Northeast Electric Power UniversityJilin 132012China the Department of Systems Engineering and Engineering Management University of North Carolina at CharlotteCharlotteNC28223 USA the Department of Electrical Engineering and Computer Science University of TennesseeKnoxvilleTN37996 USA

A voltage security region(VSR)is a powerful tool for monitoring the voltage security in bulk power grids with high penetration of *** can prevent cascading failures in wind power integration areas caused by serious over or low voltage *** bottlenecks of a VSR for practical applications are computational efficiency and *** bridge these gaps,a general optimization model for tracking a voltage security region boundary(VSRB)in bulk power grids is developed in this paper in accordance with the topological characteristics of the ***,the initial VSRB point on the VSRB is examined with the traditional OPF by using the base case parameters as initial ***,the rest of the VSRB points on the VSRB are tracked one after another,with the proposed optimization model,by using the parameters of the tracked VSRB point as the initial value to explore its adjacent VSRB *** proposed approach can significantly improve the computational efficiency of the VSRB tracking over the existing algorithms,and case studies,in the WECC 9-bus and the Polish 2736-bus test systems,demonstrate the high accuracy and efficiency of the proposed approach on exploring the VSRB.

关键词： Optimal power flow(OPF) stress direction voltage security critical point voltage security region voltage security region boundary

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