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International Middle-East power System Conference, MEPCON

作者： Mohamed Abdelrahem Mostafa Ahmed Ibrahim Harbi Ralph Kennel Jose Rodriguez Department of Electrical Engineering Assiut University Assiut Egypt Chair of High-Power Converter Systems Technical University of Munich Munich Germany Faculty of Engineering Universidad San Sebastian Santiago Chile

This paper proposes a flexible power generation scheme based on model predictive control (MPC). The proposed method combines maximum power point tracking (MPPT) operation with constant power generation (CPG), where the maximum power is extracted from the photovoltaic (PV) system. However, if the extracted power exceeds a certain threshold, the power generation will then be limited. A modified version of the perturb and observe (P&O) method is proposed to enhance the efficiency of the PV system. After that, the reference generated will be sent to the MPC loop, which decides the optimal switching state according to the cost function design. Different operating conditions confirm the superiority of the suggested technique, while comparison with the conventional method highlights the main benefits.

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Evaluation of the Economic, Technical, and Environmental Impacts of Multi-Energy System Frameworks in Distribution Networks

Evaluation of the Economic, Technical, and Environmental Imp...

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power Tech Conference

作者： António Coelho Filipe Soares José Iria João Peças Lopes Centre for Power and Energy Systems INESC TEC Porto Portugal College of Engineering Computing & Cybernetics Australian National University Canberra Australia Department of Electrical and Computer Engineering Faculty of Engineering University of Porto Portugal

This paper presents a general comparison between network-secure and network-free optimization frameworks to manage flexible multi-energy resources. Both frameworks were implemented in a test case that includes electricity, gas, and heat distribution networks. Several potential scenarios for the decarbonization of the multi-energy system were simulated. The economic, technical, and environmental impacts were compiled. The network-secure framework is highly recommended to avoid service disruptions due to network violations, but its implementation comes with a price – overall operational costs increase, sometimes substantially.

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Enhanced Oxygen Sensing with Surface Plasmon Resonance Optical Fiber

Enhanced Oxygen Sensing with Surface Plasmon Resonance Optic...

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International Conference on Photonics (ICP)

作者： Azween Hadiera Hisamuddin Maizatul Zolkapli Ahmad Sabirin Zoolfakar Mohd Hafiz Abu Bakar Nur Hidayah Azeman Ahmad Ashrif A Bakar School of Electrical Engineering College of Engineering Universiti Teknologi MARA Selangor Malaysia Institute of Power Engineering Universiti Tenaga Nasional Kajang Selangor Malaysia Institute of Microengineering and Nanoelectronics Universiti Kebangsaan Malaysia Bangi Selangor Malaysia Department of Electrical Electronic and Systems Engineering Faculty of Engineering & Built Environment Universiti Kebangsaan Malaysia Bangi Selangor Malaysia

ISBN: (数字)9798350383164

ISBN: (纸本)9798350383171

This study demonstrates a technique to enhance oxygen concentration detection by integrating surface plasmon resonance (SPR) and fluorescence-based sensors using multi-mode plastic optical fiber (POF). The optical sensor unit comprises silver with surface plasmon resonance properties and organic dye indicators, primarily focusing on fluorescence dyes, specifically Tris (4,7-diphenyl-1,10-phenanthroline) ruthenium (II) dichloride Ru(dpp) 3 Cl 2 /[Ru(dpp) 3 ] 2+ . The analysis involved analyzing the sensing capabilities of POF coated with [Ru(dpp) 3 ] 2+ and ${\text{Ag}}/\left[ {\operatorname{Ru} {{({\text{dpp}})}_3}{{^1}_2}^ + } \right.$ in intensity changes and wavelength shift, respectively. The emission spectra of [Ru(dpp) 3 ] 2+ showed a peak at 602 nm, and the emission intensity decrased as the oxygen content increased. Incorporatiing SPR revealed a reduction is emission intensity and a leftward wavelength shift with increasing oxygen content. The result demonstrates that ${\text{Ag}}\left[ {{\text{Ru(dpp}}{{\text{)}}_{\text{3}}}{{^{\text{1}}}_{\text{2}}}^{\text{ + }}} \right.$ has great slope of the series with 0.0589 and [Ru(dpp) 3 ] 2+ has slope of 0.0099.

关键词： Silver Sensitivity Plastic optical fiber Oxygen Ruthenium Refractive index Fluorescence Surface plasmon resonance Optoelectronic and photonic sensors Photonics

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Dc Leakage Current in Isolated Grid-Connected dc Nanogrid - Origins and Elimination Methods

Dc Leakage Current in Isolated Grid-Connected dc Nanogrid - ...

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Compatibility in power Electronics (CPE)

作者： Mohammadreza Azizi Oleksandr Husev Oleksandr Veligorskyi Marek Turzvński Ryszard Strzelecki Department of Radiotechnic and Embedded Systems Chernihiv Polytechnic National University Chernihiv Ukraine Department of Electric Electronic and Automation Engineering University of Extremadura Badajoz Spain Department of Electrical Power Engineering and Mechatronics Tallinn University of Technology Tallinn Estonia Faculty of Electrical and Control Engineering Gdansk University of Technology Gdansk Poland

ISBN: (数字)9798350318265

ISBN: (纸本)9798350318272

The LV dc system is a relatively new trend in the distribution sector, which seems to grow widely in the near future due to its promising advantages. In this context, LV dc protection and grounding are challenging issues. Although the galvanically isolated connection mode of dc nanogrid to the ac grid has high reliability, the leakage current can still be injected into the ac grid through the interwinding capacitors and the insulation resistance between the primary and secondary windings of the transformer. The way of grounding the dc nanogrid can also be a determining factor in the leakage current and its dc components. This study deals with the leakage current in the galvanically isolated dc nanogrid. Then, it examines the dc leakage current and its relationship with the dc nanogrid grounding and finally provides solutions to remove the dc components in the leakage current.

关键词： Resistance Insulation Grounding Simulation Windings Capacitors Leakage currents

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Regenerative test bench for the analysis of high power chargers

Regenerative test bench for the analysis of high power charg...

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8th E-Mobility power System Integration Symposium (EMOB 2024)

作者： Andreas Stadler Florian Grumm Lukas Baum Jirko Tegeler Felix Heider Johannes Brombach Dorothea Liebig Detlef Schulz Chair of Electrical Power Systems Faculty of Electrical Engineering Helmut Schmidt University University of the Bundeswehr Hamburg Holstenhofweg 85 22043 Hamburg Germany Shell Global Solutions (Deutschland) GmbH Hohe-Schaar-Str. 36 21107 Hamburg Germany

ISBN: (数字)9781837242115

For applications where short charge times are required, high power DC charging is needed. As the power of high power chargers (HPC), their number, and their usage increase, the relevance of tests and analysis of the systems increases accordingly to ensure the safety of users and electrical components. To test and evaluate HPC, a test bench is built. The use of regenerative loads allows testing up to 360 kW while relieving the grid connection point. A three-layered system is used, comprising a physical, control, and measurement layer. The physical layer is composed of an optional grid emulator, the device under test, and an electric vehicle (EV) emulator. The control layer utilizes the full control capabilities of the EV and grid emulators. Thereby, the behaviour of different stationary working points, the grid influence on and interaction with the hard-and software side, as well as communication errors can be tested thoroughly. The measurement layer collects all available data, enabling in-depth analysis of influence factors. The test bench is validated using charging measurements. The stability of the regenerative concept is verified under maximum power. A comparison of the charging behaviour of a real EV and the proposed system, indicates realistic emulation.

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A Novel Transformerless Single-Phase Three-Level Buck-Boost Inverter

A Novel Transformerless Single-Phase Three-Level Buck-Boost ...

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Annual IEEE Conference on Applied power Electronics Conference and Exposition (APEC)

作者： Eyyup Demirkutlu Ires Iskender Graduate School of Natural and Applied Science Gazi University Ankara Turkey Department of Power and Control Systems Design Engineering Aselsan Inc. Ankara Turkey Department of Electrical Electronics Engineering Engineering Faculty Gazi University Ankara Turkey Department of Electrical Electronics Engineering Engineering Faculty Cankaya University Ankara Turkey

This paper proposes a novel transformerless, single-phase, three-level, buck-boost inverter. The proposed inverter can suppress the leakage current drawn from the input power source and provide a long-lasting solution for applications with a wide range and unregulated input voltage. Unlike similar topologies, in the proposed inverter there is no need to have a mid-point of DC sources or DC bus capacitors at the input side of the inverter. A single-phase, three-level, buck-boost inverter for realizing the power stage with 110-Vrms output AC voltage and a range of 100V-200V input DC voltage is investigated in this study. The proposed topology has been proven through theory, computer simulations, and experimental studies with SiC MOSFETs-based prototype of a 300-VA power supply. Theory, computer simulation, and experimental results are all correlated.

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Justification of STATCOM systems Efficiency as an Objective of Improving the Quality of Electricity in a Mining Enterprise

Justification of STATCOM Systems Efficiency as an Objective ...

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IEEE Region 8 International Conference on Computational Technologies in electrical and Electronics engineering, SIBIRCON

作者： Sergey V. Mitrofanov Artem M. Balabanov Anastasia G. Rusina Yulia A Misnik Irina A. Shved Department of Power Supply Systems Faculty of Power Engeneering Novosibirsk State Technical University Novosibirsk Russia Department of Relay Protection and Automation of Power Systems Institute of Electrical Power Engineering Moscow Power Engineering Institute Moscow Russia Department of Power Plants Faculty of Power Engeneering Novosibirsk State Technical University Novosibirsk Russia

ISBN: (纸本)9781665464819

A harmonic filter is used as a part of the skip hoist of the majority of mining enterprises in Russia. The voltage increases as the hoisting machine decelerates and decreases as it accelerates. The harmonic filter cannot compensate for voltage deviations, flicker or upper harmonics deviations. The use of a STATCOM-type dynamic compensation device instead of a harmonic filter enables voltage stabilization at various skip hoist loadings. A STATCOM device allows for a higher (design) speed of the skip. A 15% speed growth of the skip hoist with the STATCOM device connected to it significantly increases or extraction without any constructive changes of the machine if compared to the usual skip speed achieved with an HF operation. This study provided a comparative analysis of technical characteristics of FACTS devices such as capacitor banks, static VAR compensators, synchronous compensators, and STATCOMs. It was proved that STATCOM is the most effective means of voltage level stabilization to be used at a skip hoist. The main conclusions were based on the simulation modelling in the Matlab Simulink environment. The model focused on the influence of different operating modes of the hoisting machine on the level of reactive power consumption, voltage level and harmonic components coefficients in the power distribution network of the mining enterprise.

关键词： Reactive power Voltage fluctuations Software packages Harmonic filters Harmonic analysis Automatic voltage control Mathematical models

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Design of a power calculator model for tilted PV panels 13

Design of a power calculator model for tilted PV panels

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13th International Conference ELEKTRO, ELEKTRO 2020

作者： Novák, Marek Siranec, Marek Belany, Pavol Pernis, Frantisek Roch, Marek Department of Power Electrical Systems Faculty of Electrical Engineering University of Žilina Žilina Slovakia

ISBN: (纸本)9781728175423

This paper deals with the calculation of PV panel power under different conditions, PV panel positions while respecting the Sun's position during each day, which is necessary to predict the power of PV power plants. The calculation is done in Matlab, where astronomical calculations by Jean Meeus are used. The accuracy of the PV panel power calculation is expressed as RMSE. ©2020 IEEE

关键词： Solar panels

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Adaptive Control for Shunt Active power Filter under Stochastic Solar Photovoltaics Behavior

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IEEE Journal of Emerging and Selected Topics in power Electronics 2025年

作者： Prakash, Surya Alkhatib, Mohamed Sindi, Hatem F. Alghamdi, Sultan Behera, Ranjan Kumar Muduli, Utkal Ranjan Nit Jamshedpur Dept. of Electrical Engg Jharkhand Jamshedpur India Uae University Al Ain Dept. of Electrical and Communication Engg Coe Abu Dhabi15551 United Arab Emirates King Abdulaziz University Center of Research Excellence in Renewable Energy and Power Systems Department of Electrical and Computer Engineering Faculty of Engineering Jeddah21589 Saudi Arabia Indian Institute of Technology Patna Dept. of Electrical Engineering Bihta801103 India Khalifa University Apec Dept. of Electrical Engineering and Computer Science Abu Dhabi127788 United Arab Emirates

The paper discusses the challenges in controlling a two-stage photovoltaic (PV)-based shunt active power filter (SAPF) under distorted grid conditions and stochastic PV system behavior. To address this, the paper proposes an adaptive proportional integral (API) regulator to regulate the DC-link voltage, which adapts its parameters based on the DC-link error voltage to provide low bandwidth for disturbance rejection and high bandwidth for dynamic performance enhancement. The paper also proposes an estimation method for the reference current using the sliding discrete Fourier transform and the instantaneous symmetrical component theory, which is suitable for non-ideal grid or load conditions. The accuracy of the proposed reference current estimation method is analyzed using time- and frequency-domain analysis. The performance of the PV-SAPF system with the proposed control algorithms is illustrated through simulation and real-time hardware validation under various grid conditions. Despite distorted grid conditions, the total harmonic distortion of the grid current is substantially within IEEE Std 519-2014. The proposed API regulator and reference current estimation method show promising results in improving the performance of the PV-SAPF system in the presence of internal and external disturbances. © 2013 IEEE.

关键词： Frequency domain analysis

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Optimal Configuration of Stand-Alone Hybrid Energy System in New Tiba City, Luxor, Egypt

Optimal Configuration of Stand-Alone Hybrid Energy System in...

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International Youth Conference on Radio Electronics, electrical and power engineering (REEPE)

作者： Zakaria Abd El-Aziem Salah Kamel Hoda Abd El-Sattar Loai Nasrat Mohamed A. Tolba Electrical Engineering Department Faculty of Engineering Aswan University Luxor Egypt Electrical Engineering Department Luxor Higher Institute of Engineering & Technology Luxor Egypt Electrical Power Systems Department NRU «MPEI» Moscow Russia Reactors Department Nuclear Research Center Egyptian Atomic Energy Authority Cairo Egypt

Small-grid projects for the production of electricity can be easily integrated into the energy production strategy, which can be linked to the public network or work as independent networks serving remote areas. This paper describes an approach for the optimal configuration of a standalone hybrid energy system (HES) in New Tiba City located in the northeast of Luxor City, Egypt. This HES consists of photovoltaic (PV) panels and wind turbines as the main energy source and the backup power supply includes a battery storage system and diesel generator. A new stochastic nature-inspired optimization algorithm called Pelican Optimization Algorithm (POA) is used to obtain and select the size of the system units, which can be suitable for modeling and optimized with the least Cost of Energy (COE), Net Present Cost (NPC). The findings of the POA approach were compared with using other optimization algorithms CSA (Chameleon Swarm Algorithm) and HBA (Honey Badger Algorithm) to show the POA effectiveness. The results show the effectiveness of the POA algorithm to solve the optimal economic design problem for hybrid microgrid power systems with the best NPC, and COE 7,269,332.55 $, 0.248180825$/kWh, respectively.

关键词： Photovoltaic systems Costs power supplies Urban areas Production power system stability Generators

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