Results 281 to 290 of about 200,323 (312)
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2008 IEEE/PES Transmission and Distribution Conference and Exposition: Latin America, 2008
The different unbalance definitions applied to three-phase networks are presented shortly, and the unbalance causes and effects on induction motors and ASD are commented. The behavior of an ASD is analyzed when it is fed by an unbalanced voltage centering the attention on the characteristic and non-characteristic harmonic, rms values, K-derating factor,
C. A. Reineri +2 more
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The different unbalance definitions applied to three-phase networks are presented shortly, and the unbalance causes and effects on induction motors and ASD are commented. The behavior of an ASD is analyzed when it is fed by an unbalanced voltage centering the attention on the characteristic and non-characteristic harmonic, rms values, K-derating factor,
C. A. Reineri +2 more
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Voltage Unbalance & Variations Impacts on IE4 Class LSPMM
IEEE International Conference on Industry Applications, 2021The evolution of electric motors is increasing exponentially; it is currently possible to obtain efficiencies of around 96% with the IE4 efficiency class.
J. Tabora +3 more
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Electric Power Systems Research, 1998
Abstract This paper investigates the effects of different unbalanced voltages with the same voltage unbalance factor (VUF) on the performance of a three-phase induction motor and its feedback influence on the power system. Under eight different voltage unbalance conditions, the performance of a three-phase induction motor was measured through a real ...
null Ching-Yin Lee +3 more
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Abstract This paper investigates the effects of different unbalanced voltages with the same voltage unbalance factor (VUF) on the performance of a three-phase induction motor and its feedback influence on the power system. Under eight different voltage unbalance conditions, the performance of a three-phase induction motor was measured through a real ...
null Ching-Yin Lee +3 more
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IEEE Transactions on Power Delivery, 2020
The worst voltage unbalance (VU) problems are aroused by single-phase 25-kV traction power supply systems (TPSSs) of high-speed railways (HSRs) in a three-phase grid, especially when connected to a weak remote grid which is around a number of large-scale
Yinyu Chen +3 more
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The worst voltage unbalance (VU) problems are aroused by single-phase 25-kV traction power supply systems (TPSSs) of high-speed railways (HSRs) in a three-phase grid, especially when connected to a weak remote grid which is around a number of large-scale
Yinyu Chen +3 more
semanticscholar +1 more source
4th Annual International Power Electronics, Drive Systems and Technologies Conference, 2013
In this paper, a small signal model is proposed for four-switch rectifier with input power factor correction. The required transfer functions are determined and calculated for a typical rectifier. This model is used to design an appropriate controller with defined characteristic to improve the rectifier performance.
Saeed Ouni +2 more
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In this paper, a small signal model is proposed for four-switch rectifier with input power factor correction. The required transfer functions are determined and calculated for a typical rectifier. This model is used to design an appropriate controller with defined characteristic to improve the rectifier performance.
Saeed Ouni +2 more
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IEEE Transactions on Industrial Informatics
High penetration and uneven allocation of single-phase and three-phase loads together with photovoltaic (PV) sources in low-voltage distribution systems can result in voltage unbalance and voltage regulation challenges.
Watcharakorn Pinthurat +2 more
semanticscholar +1 more source
High penetration and uneven allocation of single-phase and three-phase loads together with photovoltaic (PV) sources in low-voltage distribution systems can result in voltage unbalance and voltage regulation challenges.
Watcharakorn Pinthurat +2 more
semanticscholar +1 more source
Voltage Unbalance Factors of Doubly-Fed Wind Generator Based on Big Data Analysis
2020In view of the grid voltage unbalance, wind power generation system (PGS) in the variable speed gearbox, torque ripple of serious harm, unit monitoring data timeliness is strong, large amount of data, so in the process of analysis, also need a unified analysis was carried out on the wind field data, the effective analysis method based on big data is a ...
Na Wang, Lei Wang
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30th Annual Conference of IEEE Industrial Electronics Society, 2004. IECON 2004, 2005
This paper presents a unified control scheme for series-type active power filter combined with shunt passive filter to compensate the source voltage unbalance/current harmonics and to correct the power factor simultaneously. The phase angle and the reference voltage for unbalanced voltage/current harmonics compensation are derived from the positive ...
null Jong-Kun Lee +2 more
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This paper presents a unified control scheme for series-type active power filter combined with shunt passive filter to compensate the source voltage unbalance/current harmonics and to correct the power factor simultaneously. The phase angle and the reference voltage for unbalanced voltage/current harmonics compensation are derived from the positive ...
null Jong-Kun Lee +2 more
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Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, 2004
Most of LV customer have applied the 3-phase four wire system distribution system because it has advantage of supplying both of 1-phase at 3-phase loads simultaneously. Due to its structural simplicity, it is more convenient for use rather than the conventional separated scheme.
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Most of LV customer have applied the 3-phase four wire system distribution system because it has advantage of supplying both of 1-phase at 3-phase loads simultaneously. Due to its structural simplicity, it is more convenient for use rather than the conventional separated scheme.
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Voltage Unbalance Factor (VUF) Mitigation Considering Demand Side Management on Islanded Microgrid
2022 IEEE India Council International Subsections Conference (INDISCON), 2022Anamika Kumari, Nada Ali, Deepak Kumar
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