Results 241 to 250 of about 9,922 (292)
New Unbalance Factor for Estimating Performance of a Three-Phase Induction Motor With Under- and Overvoltage Unbalance [PDF]
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
exaly +4 more sources
Theoretical Analysis of the Voltage Unbalance Factor to Characterize Unbalance Problems in Induction Motors [PDF]
International Review of Electrical Engineering (IREE), 2021 Voltage Unbalance (VU) is one of the most common power quality problems in industrial electrical systems and it is a subject of systematic study. This problem affects the operation and the efficiency of Induction Motors (IMs), which are the loads that demand more energy in the industrial sector with around 68%.
Enrique C. Quispe +4 more
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Calculation of the Voltage Unbalance Factor for 25kV-50Hz Railway Substations
2022 20th International Conference on Harmonics & Quality of Power (ICHQP), 2022 This paper presents a method to determine the voltage unbalance factor for a 25kV/50Hz railway substation taking into account the power drawn by the trains. In order to correctly size a balancing system to be associated with the substation, it is necessary to calculate with precision the voltage unbalance factor.
Flumian, Didier +2 more
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A Novel Approach Toward Interpretation and Application of Voltage Unbalance Factor
IEEE Transactions on Industrial Electronics, 2007 Voltage unbalance has been interpreted in a number of ways based on the conditions and complexities that are involved. This paper takes the widely used expression of voltage unbalance factor (VUF) and puts forward the various ambiguities that arise due to voltage variation and unbalance when applied to a test case.
P. Giridhar Kini +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
exaly +2 more sources
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
Brain Nerve Growth Factor Unbalance Induced by Anabolic Androgenic Steroids in Rats
Medicine & Science in Sports & Exercise, 2013 Anabolic androgenic steroids (AAS) are synthetic androgen-like compounds that are abused in sport communities despite their adverse effects. Nerve growth factor (NGF) influences neuronal differentiation and survival, and it also mediates higher brain functions such as learning and memory.
Stefano Pieretti +6 more
openaire +4 more sources
Effect of nonlinearity and unbalance on power factor
2000 Power Engineering Society Summer Meeting (Cat. No.00CH37134), 2002Power factor has always been a very important parameter in the economics of power systems engineering. It is a very useful figure of merit that represents the utilization of the supply system. The notions established for the definition of power factor considering sinusoidal voltage and current waveforms do not hold true in the presence of distortion ...
D.P. Manjure, E.B. Makram
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2010 IEEE/PES Transmission and Distribution Conference and Exposition: Latin America (T&D-LA), 2010
In this paper, an analysis of the complex voltage unbalance factor (CVUF) in three-phase lines is offered, in order to orientate future experiments in the study of the effects of voltage unbalance. The geometrical loci for constant magnitudes of the CVUF are presented, considering that the angles of the voltages are constant, and considering that the ...
A. L. Ferreira Filho +3 more
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In this paper, an analysis of the complex voltage unbalance factor (CVUF) in three-phase lines is offered, in order to orientate future experiments in the study of the effects of voltage unbalance. The geometrical loci for constant magnitudes of the CVUF are presented, considering that the angles of the voltages are constant, and considering that the ...
A. L. Ferreira Filho +3 more
openaire +1 more source
IEICE Transactions on Communications, 2005
In this paper, a balance-unbalance conversion factor (TCTL: Transverse Conversion Transfer Loss, TCL: Transverse Conversion Loss) and a radiated emission for differential type microstrip lines with a partial unbalance on a PCB (Printed Circuit Board) are investigated.
Ken Fujiyoshi +3 more
openaire +1 more source
In this paper, a balance-unbalance conversion factor (TCTL: Transverse Conversion Transfer Loss, TCL: Transverse Conversion Loss) and a radiated emission for differential type microstrip lines with a partial unbalance on a PCB (Printed Circuit Board) are investigated.
Ken Fujiyoshi +3 more
openaire +1 more source