Published by Ivan KOSTIUKOV, National Technical University “Kharkiv Polytechnic Institute”, Department of Electrical Insulation and Cable Engineering, Ukraine Abstract. This paper gives a description of measurement method which can be used in practice of carrying out measurement of stray inductance of tested capacitive object with the unknown value of electrical capacitance. Stray inductance is determinedContinue reading “Estimation of Capacitors Stray Inductance by the Analysis of Overdamped Discharge Current Curves”
Tag Archives: Frequency
High Efficiency Flywheel Motor Generator Model with Frequency Converter Controlled
Published by 1. M.S. ALI 1,2, 2. Mahidur R SARKER 3, 3. Ahmad ASRUL IBRAHIM 1, 4. Ramizi MOHAMED1, 1Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Bangi 43600, Malaysia; 2Electrical Engineering Department, German-Malaysian Institute , Jalan Ilmiah, Taman Universiti,43000, Kajang, Selangor, Malaysia; 3Institute of IR 4.0, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor,Continue reading “High Efficiency Flywheel Motor Generator Model with Frequency Converter Controlled”
Diagnostics of Transformer Insulation by Frequency Domain Spectroscopy
Published by Miroslav GUTTEN, Daniel KORENCIAK, Peter BRNCAL, Viktor CEFER, University of Zilina, Slovakia Abstract. The paper deals with the diagnostics of insulation oil-paper in high-voltage transformers by frequency diagnostic spectroscopy. The first part of paper deals with the base information about diagnostics of power transformers. In this part are presented differently insulating methods, forContinue reading “Diagnostics of Transformer Insulation by Frequency Domain Spectroscopy”
Memristive Devices In Three-Phase Systems
Published by Piotr ZEGARMISTRZ, Bartłomiej GARDA, AGH University of Science and Technology Abstract. The aim of the research presented in a paper was to provide trustworthy simulation results for symmetrical three-phase systems with memristive load. The memristors in the system are combined with linear resistors in order to limit the current in the element. LinearContinue reading “Memristive Devices In Three-Phase Systems”
Start-up of PM Synchronous Motors
Published by Stanisław GAWRON, Jakub BERNATT, Artur POLAK,Sieć Badawcza Łukasiewicz – Instytut Napędów i Maszyn Elektrycznych KOMEL Abstract. Three variants of starting synchronous motors are presented. In simplest solution, cage winding is placed in rotor, asynchronous start-up is obtained. This method generates large surge currents adversely affecting power grid and motor (impact forces/impact torque areContinue reading “Start-up of PM Synchronous Motors”
Analysis, Simulation and Experimental Validation of High Frequency DC/AC Multilevel Inverter
Published by Alla Eddine TOUBAL MAAMAR, M’hamed HELAIMI, Rachid TALEB, Electrical Engineering Department, Hassiba Benbouali University, LGEER Laboratory, Chlef, Algeria Abstract. In this study, the analysis, simulation and realization of direct current to alternating current multilevel inverter are discussed. Inverter operation with the high-frequency mode is evaluated and tested for the validation of the topology.Continue reading “Analysis, Simulation and Experimental Validation of High Frequency DC/AC Multilevel Inverter”
Monitoring of Electric Arc Furnace Supply Voltage Frequency using Phasor Analysis
Published by Szymon BARCZENTEWICZ, Krzysztof DUDA, Andrzej BIEŃ, AGH University of Science and Technology Abstract. This paper presents the results of measurement experiment conducted in the operating steel plant. Frequency analysis of measured signals revealed an interesting phenomenon, as it happened that after switching off the electric arc furnace, the frequency of the supplying voltageContinue reading “Monitoring of Electric Arc Furnace Supply Voltage Frequency using Phasor Analysis”
Frequency Control in a Power System
Published by Pietro Tumino, EE Power – Technical Articles: Frequency Control in a Power System, October 15, 2020. Learn about the primary, secondary and tertiary frequency control in a power system. An electric power system is characterized by two main important parameters: voltage and frequency. In order to keep the expected operating conditions and supply energyContinue reading “Frequency Control in a Power System”
The Measurement of Input Power of Power Supply in Network Disturbed by Low Frequency Distortions
Published by Stanisław GALLA, Arkadiusz SZEWCZYK,Gdansk University of Technology Faculty of Electronics, Telecommunications and Informatics Abstract. In the paper authors present results of observation of input power changes versus harmonics amplitude in supply voltage of low-power power supply device. In the study, the electrical measurements supported with thermal imaging were used. The input circuit elementsContinue reading “The Measurement of Input Power of Power Supply in Network Disturbed by Low Frequency Distortions”
Study on Transformer Tank Vibration Characteristics in the Field and its Application
Published by Ji SHENGCHANG, Zhu LINGYU, Li YANMING, State Key Laboratory of Electrical Insulation and Power Equipment, Department of electric engineering, Xi′an Jiaotong University Abstract. Vibration signal analysis method is one of effective methods to monitor the condition of transformer windings and core. In this paper, the multi-channels vibration measurement system is set up andContinue reading “Study on Transformer Tank Vibration Characteristics in the Field and its Application”
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