Power Quality Improvement in Distributed Generation System under varying Load Conditions using PWM and Hysteresis Controller

Published Vijayshree G1, Sumathi S2, RNSIT, Bangalore,Karnataka,India(1). RNSIT, Bangalore,Karnataka, India(2) Abstract – This paper proposes a power system network modeled using a microgrid, integrated with wind and solar photovoltaic (PV) resources, along with the battery energy storage system (BESS) connected to the three-phase grid feeding the linear and nonlinear load. The simulation is carried outContinue reading “Power Quality Improvement in Distributed Generation System under varying Load Conditions using PWM and Hysteresis Controller”

Evaluating Direction of Harmonics – Power Harmonics

Published by Unipower AB, Metallgatan 4C, 44132 Alingsås, Sweden. Email: info@unipower.se One important issue is how to trace the source of harmonics. The example below shows harmonic filters connected until 11.00 and there is no voltage distortion as expected. After 11.00 the filters were disconnected due to a fault and voltage harmonics can be seen.Continue reading “Evaluating Direction of Harmonics – Power Harmonics”

Application of the Permanent Magnet Synchronous Motors for Tower Cranes

Published by Łukasz KNYPIŃSKI1,2, Jacek KRUPIŃSKI2, Poznan University of Technology(1), Krupinski Cranes Sp. z o.o.(2) Abstract. The paper presents the results of experimental research concerning the application of the permanent magnet synchronous motors for tower cranes. The modern permanent magnet synchronous motors (PMSM) are characterized by better operating parameters in relation to squirrel cage inductionContinue reading “Application of the Permanent Magnet Synchronous Motors for Tower Cranes”

Eccentricity Fault Identification in Round Rotor Synchronous Motors considering Load Variation

Published by Bashir Mahdi EBRAHIMI1, Jawad FAIZ1, Mohammad ETEMADREZAIE2, Mojtaba BABAIE3, Center of Excellence on Applied Electromagnetic Systems, School of Electrical and Computer Engineering, University of Tehran, Tehran, Iran(1), Department of electrical and computer engineering, Delft, Zuid-holland, Netherlands(2), Faculty of Engineering, Science and Research Campus, Islamic Azad University, Tehran, Iran(3) Abstract. Impacts of load variationContinue reading “Eccentricity Fault Identification in Round Rotor Synchronous Motors considering Load Variation”

The Latest Superconducting Short Current Limiters – Review of Selected Solutions

Published by 1. Joanna KOZIEŁ1, 2. Damian GNAT1, 3.Michał MAJKA1, 4.Yerbol Turgynebekov2,Lublin University of Technology, Department of Electrical Engineering and Electrotechnologies, Faculty of Electrical Engineering and Computer Science(1) Taraz State University after M.Kh.Dulaty, Kazakhstan(2)ORCID: 1.0000-0003-1682-2589, 3.0000-0002-7153-040X Abstract. In the article after the introduction, containing the idea and principle of operation of the SFCL, selected prototypesContinue reading “The Latest Superconducting Short Current Limiters – Review of Selected Solutions”

Analysis of Series Resonance in Power Distribution Networks with Aggregate Harmonic Sources

Published by Felix KALUNTA1, Tolulope AKINBULIRE2, Frank OKAFOR3, Federal Institute of Industrial Research, Lagos (1), University of Lagos (2,3) Abstract. A hybrid technique for the analysis of series resonance in power network with aggregate harmonic sources is hereby presented. It involves the identification of resonant modes using admittance scan and computation of network currents atContinue reading “Analysis of Series Resonance in Power Distribution Networks with Aggregate Harmonic Sources”

Influence of the Position of the Electrical Contact on the Size of the Temperature Distribution

Published by Dušan MEDVEĎ1, Ján ZBOJOVSKÝ2, Technical University of Košice. ORCID: 1. 0000-0002-8386-0000; 2. 0000-0003-4383-3996 Abstract. This paper deals with the investigation of temperature field distribution around the high-current electric contact. The analyses of temperature field were realised in simulation environment ANSYS and provide better understanding why the electrical contact position influences the heat dissipation.Continue reading “Influence of the Position of the Electrical Contact on the Size of the Temperature Distribution”

Measurement of Electric Current using Optical Fibers: A Review

Published by Jan NEDOMA, Marcel FAJKUS, Radek MARTINEK, VSB – Technical university of Ostrava Abstract. This article deals with the measurement of electric current in the energy via optical fibers. Nowadays, the measurement of the electrical current by using optical fiber most commonly based on the principle of Faraday effects, thus the magneto-optic effect. FOCSContinue reading “Measurement of Electric Current using Optical Fibers: A Review”

Differential Relay Protection for Prototype Transformer

Published by Bashar M. SALIH, Mohammed A. IBRAHIM, Ali N. HAMOODI, Northern Technical University Abstract. This paper represents the differential protection relay that used to protect the prototype-Terco power transformer. Matlab/Simulink is used to simulate the protection system. The power differential protection algorithm has been simulated and tested on a 2KVA power transformer under differentContinue reading “Differential Relay Protection for Prototype Transformer”

The Effect of Cable Duct Diameter on the Ampacity of High-Voltage Power Cables

Published by Filip RATKOWSKI1,2, Michał KOŁTUN2, Stanislaw CZAPP1, Gdańsk University of Technology (1), Eltel Networks Energetyka SA (2). ORCID: 1. 0000-0002-4698-9729, 3. 0000-0002-1341-8276 Abstract. The ampacity of power cables depends, among others, on the conditions of heat dissipation from the cable to the environment. Cables are usually laid directly in the ground, but in someContinue reading “The Effect of Cable Duct Diameter on the Ampacity of High-Voltage Power Cables”