Published by Marian HYLA, Silesian University of Technology, Department of Power Electronics, Electrical Drives and Robotics Abstract. The paper presents the braking process of a large-power salient-pole synchronous motor forced by field current. The motor control was carried out using a microprocessor block for the excitation of large-power synchronous motors. Cases of free retardation andContinue reading “Large-Power Synchronous Motor Braking by Field Current”
Tag Archives: Current
Influence of Environmental Exposures on Electrical Parameters of Low Voltage Surge Arresters
Published by Piotr PAJĄK1, Bartłomiej SZAFRANIAK1, Anna DĄDA2, AGH University of Science and Technology, Faculty of Electrical Engineering, Automatics, Computer Science and Biomedical Engineering (1), MGGP S.A., Krakow Branch (2) Abstract. Low voltage surge arresters work in a very different environmental conditions. During the exploitation, under the influence of environmental exposures, the structure of metalContinue reading “Influence of Environmental Exposures on Electrical Parameters of Low Voltage Surge Arresters”
Faults Detection in PMSM Drive using Artificial Neural Network
Published by Konrad URBAŃSKI, Dariusz MAJCHRZAK,Poznań University of Technology Abstract. In this paper, simulation research results of PMSM drive with open phase fault detection are presented. Proposed fault detection system is implemented using two artificial neural networks. One of them is neural model of healthy PMSM and another one generates diagnostic signals. When the faultContinue reading “Faults Detection in PMSM Drive using Artificial Neural Network”
Anomalous Leakage Currents on Silicone Rubber Hollow Insulators
Published by Krystian Leonard CHRZAN1, Maciej ZIPP2,Wrocław University of Science and Technology (1), Gates Corporation (2) Abstract. Leakage currents on silicone and porcelain housings were measured at a 110 kV substation (site pollution severity class heavy) for 7 months. Both types of housing had a similar geometry. The current on porcelain housings is usually upContinue reading “Anomalous Leakage Currents on Silicone Rubber Hollow Insulators”
Simulations of Electrical Parameters in High Current Busbars
Published by Łukasz KOLIMAS, Sebastian ŁAPCZYŃSKI, Michał SZULBORSKI, Warsaw University of Technology, Electrical Power Engineering Institute Abstract. The requirements for high-current circuits, contact systems, switchboards and electrical apparatuses differ from the typical requirements for devices with a low current load, not only because those are more complex, but also because new requirements arise due toContinue reading “Simulations of Electrical Parameters in High Current Busbars”
Effect of Soil Moisture on Current-Carrying Capacity of Low-Voltage Power Cables
Published by Stanislaw CZAPP1, Filip RATKOWSKI1, 2, Gdańsk University of Technology (1), Research & Development Center, Eltel Networks Energetyka SA (2) Abstract. One of the factors affecting current-carrying capacity of underground power cables is the thermal resistivity of soil. Its value in the close proximity of the cable is the most important, and for thisContinue reading “Effect of Soil Moisture on Current-Carrying Capacity of Low-Voltage Power Cables”
Regulation of Current Harmonics in Grid with Dead-beat Controlled Shunt Active Power Filter
Published by Parandhaman BALAMURUGAN1, Natarajan SENTHIL KUMAR1,Vellore Institute of Technology (1),Chennai, Tamilnadu, India Abstract. Hardware implementation of Shunt Active Power Filter (SAPF) to regulate harmonics in the grid current is presented in this work. Dead-beat controller is employed to regulate the harmonics injected by SAPF using Spartan-6 FPGA processor. The effectiveness of the control strategyContinue reading “Regulation of Current Harmonics in Grid with Dead-beat Controlled Shunt Active Power Filter”
Methods for Determining Power Losses in Cable Lines with Non-Linear Load
Published by Łukasz TOPOLSKI, Jurij WARECKI, Zbigniew HANZELKA, AGH University of Science and Technology Abstract. Harmonic currents in power cables cause additional power losses associated with phenomena that increase the temperature of the cable insulation and make its service life shorter. For these reasons, it is important to choose methods for determining active power losses,Continue reading “Methods for Determining Power Losses in Cable Lines with Non-Linear Load”
The Dangers of Stray Current Damage in Electrical Systems & Arc Flash Protection
Published by Jim Galloway, International Association of Electrical Inspectors (IAEI) Magazine, Electrical Fundamentals – The Dangers of Stray Current Damage in Electrical Systems & Arc Flash Protection, July 3, 2019 The new extension to the factory is finally finished. The engineers have produced a state-of-the-art design; the qualified electricians have completed a professional installation withContinue reading “The Dangers of Stray Current Damage in Electrical Systems & Arc Flash Protection”
Current-Carrying Capacity Parallel Single-Core LV Cable
Published by Lech BOROWIK1, Artur CYWIŃSKI2Politechnika Częstochowska, Wydział Elektryczny (1), Pracownia Projektowa omega-projekt (2) Abstract. The paper presents the problems related to the selection of parallel single-core low voltage cables in terms of their current carrying capacity and accordance with PN-IEC 60364-5-523 national standard, exemplified by electric power transmission from transformer MV/LV 1600kVA, with proximityContinue reading “Current-Carrying Capacity Parallel Single-Core LV Cable”
Power Quality Blog 