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32nd IEEE International Symposium on ind.strial Electronics, ISIE 2023

作者： Rahimi, Leila Dòria-Cerezo, Arnau Griñó, Robert Inst. of Ind. and Control Engineering Universitat Politècnica de Catalunya Barcelona Spain Universitat Politècnica de Catalunya Inst. of Industrial and Control Eng. Dept. of Electrical Engineering Barcelona Spain Universitat Politècnica de Catalunya Inst. of Industrial and Control Eng. Dept. of Automatic Control Barcelona Spain

ISBN: (纸本)9798350399714

This paper analyzes the zero dynamics of three-phase current source inverters fed from a voltage source and connected to a local resistive load or the electrical power grid. The zero dynamics is the remaining dynamics of a system when it exactly meets the control objectives. It is important for understanding the system behaviour, and its limitations, and designing efficacious controllers. The analysis concludes that, when the power source is modelled from its Thévenin equivalent circuit, some stability problems occur in the dc link if the control scheme only tracks the output voltage. The paper includes an alternative nested-loop controller that overcomes the internal dc-current inst.bility. © 2023 IEEE.

关键词： Equivalent circuits

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Technical Functions of Energy Storage Systems in the LV Distribution

Technical Functions of Energy Storage Systems in the LV Dist...

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2023 Progress in Applied Electrical engineering, PAEE 2023

作者： Piasecki, Szymon Szaniawski, Krzysztof Inst. of Control and Ind. Electronics Warsaw University of Technology Warsaw Poland Apator S.A Gdanska Torun Poland

ISBN: (纸本)9798350316254

The article presents issues related to the use of energy storage in a low-voltage distribution grid with a large number of renewable sources. Technical functions of energy storages were presented - improvement of voltage quality and stabilization of the grid allowing to limit shutdowns of prosumer inst.llations. Thanks to this, it is possible to use the inst.lled renewable sources more effectively without the need to expand the distribution infrastructure. The article presents the concept and operating modes of the storage system based on a pilot project implemented in one of the polish villages in cooperation with grid operator. © 2023 IEEE.

关键词： Energy storage

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LV distribution gird stabilisation using Energy Storage System 17

LV distribution gird stabilisation using Energy Storage Syst...

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

作者： Piasecki, Szymon Szaniawski, Krzysztof Zaleski, Jaroslaw Mienski, Rozmyslaw Kelm, Pawel Jasinski, Marek Chang, Yu-Chen Warsaw University of Technology Inst. of Control and Ind. Electronics Warsaw Poland Apator S.A. Gdanska 4A C4 Torun Poland Zaklad Energoelektroniki TWERD Aleksandrowska 28-30 Torun Poland Lodz University of Technology Inst. of Electrical Power Engineering Lodz Poland NTUST Department of Electronic and Computer Engineering Taipei Taiwan

ISBN: (纸本)9798350300048

This paper presents issues related to implementing energy storage in a low-voltage distribution grid with many renewable sources. The purpose of the storage inst.llation is to balance and stabilise the mains voltage. Thanks to this, outages of prosumer photovoltaic inst.llations are limited and energy from RES can be used more effectively without expanding the distribution infrastructure. The article presents the concept and operation modes of the energy storage system illustrated with the course of actual research registered during the pilot project implemented in the Ochotnica Dolna Commune in cooperation with the AGH University of Science and Technology and Tauron Dystrybucja. © 2023 IEEE.

关键词： Energy storage

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Analysis of the zero dynamics of three-phase current source inverters using a complex-valued approach

Analysis of the zero dynamics of three-phase current source ...

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IEEE International Symposium on ind.strial Electronics (ISIE)

作者： Leila Rahimi Arnau Dòria-Cerezo Robert Griñó Inst. of Ind. and Control Engineering Universitat Politècnica de Catalunya Barcelona Spain Inst. of Industrial and Control Eng. and Dept. of Electrical Engineering Universitat Politècnica de Catalunya Barcelona Spain Inst. of Industrial and Control Eng. and Dept. of Automatic Control Universitat Politècnica de Catalunya Barcelona Spain

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Technical Functions of Energy Storage Systems in the LV Distribution

Technical Functions of Energy Storage Systems in the LV Dist...

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Progress in Applied Electrical engineering (PAEE)

作者： Szymon Piasecki Krzysztof Szaniawski Inst. of Control and Ind. Electronics Warsaw University of Technology Warsaw Poland Apator S.A Gdanska Torun Poland

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Averaged Models and Analysis of a Three-Phase CSI as a Dual of a Three-Phase VSI

Averaged Models and Analysis of a Three-Phase CSI as a Dual ...

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IEEE International Conference on ind.strial Technology (ICIT)

作者： Pau Boira Pujol Arnau Dòria-Cerezo Robert Griñó Inst. of Ind. and Control Engineering (IOC) Universitat Politècnica de Catalunya Barcelona Spain Dept. Electrical Engineering IOC Universitat Politècnica de Catalunya Barcelona Spain Dept. Automatic Control IOC Universitat Politècnica de Catalunya Barcelona Spain

ISBN: (数字)9798350340266

ISBN: (纸本)9798350340273

The averaged model of a current source inverter (CSI) as a voltage source inverter (VSI) dual is presented in this paper. The differential equations defining the CSI are in-troduced in matrix representation for phase-to-phase and phase-to-neutral voltages and expressed using the Clarke and Park transformations. This multiple-input, multiple-output system is studied through the transfer function matrix of the linearized model, and the results are related to original CSI dynamics. Finally, open-loop simulations using Matlab/Simulink and realtime Typhoon-HIL have been carried out to validate the models.

关键词： Analytical models Voltage source inverters Tropical cyclones Transfer functions Oscilloscopes Modulation Switches

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LV distribution gird stabilisation using Energy Storage System

LV distribution gird stabilisation using Energy Storage Syst...

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Compatibility in Power Electronics (CPE)

作者： Szymon Piasecki Krzysztof Szaniawski Jaroslaw Zaleski Rozmyslaw Mienski Pawel Kelm Marek Jasinski Yu-Chen Chang Inst. of Control and Ind. Electronics Warsaw University of Technology Warsaw Poland Apator S.A. Torun Poland Zaklad Energoelektroniki TWERD Torun Poland Inst. of Electrical Power Engineering Lodz University of Technology Lodz Poland Department of Electronic and Computer Engineering NTUST Taipei Taiwan

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Synchronization Analysis for a Class of Genetic Oscillator Networks

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Journal of Mathematical Sciences (United States) 2019年第3期238卷 236-247页

作者： Gao, Q. Du, J. Liu, X. Key Lab Ind. Comput. Control Eng. Hebei Province Inst. Electr. Eng. Yanshan University Qinhuangdao 066004 China

We consider a synchronization problem for genetic oscillator networks. The genetic oscillators are modeled as nonlinear systems of the Lur’e type. Simple and verifiable synchronization conditions are presented for genetic oscillator networks by using the theory of absolute stability and the matrix theory. A network composed of coupled Goodwin models is used as an example of numerical simulation to verify the efficiency of the theoretical method. © 2019, Springer Science+Business Media, LLC, part of Springer Nature.

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Hybrid repetitive controller using a stochastic evolutionary search and a deterministic iterative learning law

Hybrid repetitive controller using a stochastic evolutionary...

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International Conference on Methods and Models in Automation and Robotics (MMAR)

作者： Bartlomiej Ufnalski Michal Malkowski Lech M. Grzesiak Inst. of Control and Ind. Electron. Warsaw Univ. of Tech. Poland

The paper proposes a significant modification to the plug-in direct multi-swarm repetitive controller (PDMSRC). The recently developed PDMSRC for the sine wave constant-amplitude constant-frequency (CACF) voltage-source inverter (VSI) with an output LC filter serves as a case study. Initially, a purely stochastic control law was employed. Due to the nature of the particle swarm optimization algorithm used to solve the dynamic optimization problem posed by the repetitive control task in real time, the responsiveness of the controller was relatively sluggish. On the other hand, the classic P-type iterative learning control (ILC) law offers fast response. Unfortunately, the classic non-filter-augmented ILC does not offer a practical level of robustness, e.g. a repetitive disturbance can easily destabilize the system, which is not the case in PDMSRC thanks to the appropriate cost function definition. Here a hybridization is proposed to combine the advantages of both approaches. The stochastic control law is replaced with the original part-stochastic part-deterministic swarm movements by incorporating the classic ILC rule into the swarm movements. A convincing improvement in convergence ratio is illustrated with the help of numerical experiments.

关键词： Switches Optimization Stochastic processes Heuristic algorithms Voltage measurement Frequency measurement

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GMiner: Rule-Based Fuzzy Clustering for Google Drive Behavioral Type Mining

GMiner: Rule-Based Fuzzy Clustering for Google Drive Behavio...

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International Computer Symposium (ICS)

作者： Chih-Hung Hsieh Cheng-Hao Yan Ching-Hao Mao Chi-Ping Lai Jenq-Shiou Leu Institute for Information Industry Taipei Taiwan Inst. for Inf. Ind. Taipei Taiwan Department of Electronic and Computer Engineering National Taiwan University of Science and Technology Taiwan R.O.C

ISBN: (纸本)9781509034390

Due to more and more on-premises services are migrating onto cloud, user behavioral analysis then gets popular as a data-driven way to administer lots accounts of on-cloud services. This paper proposes a novel rule-based approach, GMiner, for mining different types of Google cloud drive usages as an unsupervised account-management approach. Experiment results show that GMiner provides accurate, inter-pretable, and visualized clustering results which are helpful for highlighting inactive, quasi-insider accounts, or other potential cyber-security risks from real-environment dataset.

关键词： Google Fuzzy sets Sociology Statistics Data visualization Pragmatics Companies

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