Results 211 to 220 of about 5,441 (256)
Unbalance Compensator for Three-Phase Industrial Installations.
IEEE Latin America Transactions, 2011 Este trabajo ha sido apoyado por el Centro de Transferencia de Tecnología de la UPV y por Eléctrica de Vinalesa, S. Coop. V., a través del proyecto INNOVA 2008, nº 1830.
León-Martínez, Vicente +2 more
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IEEE Transactions on Energy Conversion, 2001
Analysis of the steady-state performance of an induction motor connected to unbalanced three-phase voltages is presented. The index of voltage unbalance used in this paper is the complex voltage unbalance factor (CVUF) that consists of the magnitude and the angle.
Yaw-Juen Wang
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Analysis of the steady-state performance of an induction motor connected to unbalanced three-phase voltages is presented. The index of voltage unbalance used in this paper is the complex voltage unbalance factor (CVUF) that consists of the magnitude and the angle.
Yaw-Juen Wang
exaly +2 more sources
Voltage unbalance compensation with smart three-phase loads
2016 Power Systems Computation Conference (PSCC), 2016This paper describes the design, proof-of-concept simulations and laboratory test of an algorithm for controlling active front-end rectifiers to reduce voltage unbalance. Using inputs of RMS voltage, the rectifier controller allocates load unevenly on its 3 phases to compensate for voltage unbalance originating in the power supply network. Two variants
Philip J. Douglass +2 more
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Analysis and Treatment of Three-Phase Unbalance Problem
2020 IEEE 4th Information Technology, Networking, Electronic and Automation Control Conference (ITNEC), 2020Once the three-phase unbalanced problem occurs in the power supply and distribution system, it will cause damage to the lines, transformers and power equipment. This paper analyzes the causes and harms of the three-phase imbalance problem and summarizes the management methods of the three-phase imbalance problem.
Dongliang Feng +5 more
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Three-phase inverter-connected DG-units and voltage unbalance [PDF]
Electric Power Systems Research, 2011 The increasing presence of single-phase distributed generators and unbalanced loads in the electric power system may lead to unbalance of the three phase voltages, resulting in increased losses and heating. The distribution network operators (DNOs) are increasingly being challenged to maintain the required power quality.
Bart Meersman +2 more
exaly +3 more sources
Joint Voltage and Phase Unbalance Detector for Three Phase Power Systems
IEEE Signal Processing Letters, 2013This letter develops a fast detection algorithm for voltage and phase unbalance in three phase power systems. It is suitable for real time applications since the required observation length is one cycle. It is shown to successfully detect small unbalance conditions at low SNRs. Its detection performance is shown to outperform traditional detectors that
Ming Sun, Zafer Sahinoglu
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IEEE Transactions on Energy Conversion, 2010
This paper evaluates the influence of the unbalance factors in calculating total copper losses, efficiency, power factor, input power, output torque, peak currents, and derating factor of the motor operating under unbalanced voltage system. The complete definition for the voltage unbalance is using complex voltage-unbalance factor that consists of its ...
Makbul Anwari, Ayong Hiendro
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This paper evaluates the influence of the unbalance factors in calculating total copper losses, efficiency, power factor, input power, output torque, peak currents, and derating factor of the motor operating under unbalanced voltage system. The complete definition for the voltage unbalance is using complex voltage-unbalance factor that consists of its ...
Makbul Anwari, Ayong Hiendro
exaly +3 more sources
Considerations on the unbalance regime of the three-phase consumers
2012 13th International Conference on Optimization of Electrical and Electronic Equipment (OPTIM), 2012The paper deals with an analysis upon the unbalance regime of the three-phase consumers supplied with a sinusoidal voltage system and, upon the voltage and current unbalance indicators. For rapidly calculating the unbalance regime specific indicators, knowing the characteristics of the consumers fed from the three-phase network, a software application ...
Ionel Lepadat +2 more
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Characterization of Three-Phase Calibrator for Traceable Measurement of Voltage Unbalance
2021 International Conference on Electrical, Communication, and Computer Engineering (ICECCE), 2021The approach to establishing the metrological traceability of the results of measuring the zero sequence ratio in the conditions of unbalance of the three-phase power supply network is proposed. The standardized definition of this parameter of power quality for the simplification of cumbersome mathematical expressions of processing the obtained results
Valentyn Isaiev, Oleh Velychko
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On the Assessment of Three-Phase Delta Voltages’ Unbalance
2020 Moscow Workshop on Electronic and Networking Technologies (MWENT), 2020Several existing three-phase delta voltages’ unbalance factors, including the "true unbalance factor" (the negative sequence voltage unbalance factor) and its complex form, are considered. New geometric criteria of delta voltages’ balance and unbalance, based on the dealing with delta voltages’ triangles of equal perimeters and different areas are ...
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