Results 271 to 280 of about 24,134 (300)
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Voltage unbalance emission assessment in radial power systems
2013 IEEE Power & Energy Society General Meeting, 2012Voltage unbalance (VU) emission assessment is an integral part in the VU-management process where loads are allocated a portion of the unbalance absorption capacity of the power system. The International Electrotechnical Commission Report IEC/TR 61000-3-13:2008 prescribes a VU emission allocation methodology establishing the fact that the VU can arise ...
Jayatunga, U, Perera, S, Ciufo, P
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Type detection of voltage sags through voltage unbalance factor
2012 IEEE 15th International Conference on Harmonics and Quality of Power, 2012This paper presents a new method to characterize and detect the type of voltage sag through complex voltage unbalance factor (CVUF). Different types of voltage dip due to unbalance faults in power system are evaluated in term of CVUF and an attempt is made to characterize and detect the types of dip through this factor.
Padmanabh Thakur +2 more
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Voltage disturbances, waveform distortion and unbalance
IEE Colloquium on Issues in Power Quality, 1995This paper discusses voltage disturbances and their affect on sensitive-loads. The paper is not a comprehensive discussion but it details some of the troublesome aspects that have come to light during the past few years. Methods of minimising the problems caused by distortion are also discussed.
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Impact of unbalance voltage dips on the behavior of voltage source inverters
2009 Brazilian Power Electronics Conference, 2009This paper discusses the impact of balanced and unbalanced voltage dips on grid connected voltage source inverters, usually found in wind turbines. A Kalman filter synchronization method is used to provide an accurate and fast extraction of the voltage positive sequence under unbalanced voltage dips.
Ivan Jorge Gabe, Humberto Pinheiro
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A distributed voltage unbalance compensation method for islanded microgrid
2015 IEEE 13th International Conference on Industrial Informatics (INDIN), 2015This paper presents a distributed secondary control scheme for voltage unbalance compensation in the islanded microgrid (MG) systems. Conventionally, the voltage unbalance compensation is realized in a centralized way, which has certain intrinsic disadvantages such as poor fault tolerance ability and higher computational and communication cost.
Fanghong Guo, Changyun Wen
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Assessment of harmonic distortion and voltage unbalance
IEE Seminar on Power - it's a Quality Thing, 2005The talk will concentrate on the assessment of harmonic distortions and phase unbalance from polluting loads. It will cover the Stage 3 assessment of ER G5/4 including setting of harmonic emission limits. It will also include causes of phase unbalance with some examples and alternative solutions once an issue is identified. (15 pages)
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2017
In this paper the effects of voltage unbalance in both the Complex Current Unbalance Factor (CCUF) and the Torque Ripple Factor (TRF) of a three-phase induction motor have been discussed. The effects of 13060 points of voltage unbalance taken around the limit of standards (VUF = 2%) have been analyzed, since the largest number of international ...
Luis Guasch-Pesquer +3 more
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In this paper the effects of voltage unbalance in both the Complex Current Unbalance Factor (CCUF) and the Torque Ripple Factor (TRF) of a three-phase induction motor have been discussed. The effects of 13060 points of voltage unbalance taken around the limit of standards (VUF = 2%) have been analyzed, since the largest number of international ...
Luis Guasch-Pesquer +3 more
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Calculation Methods of Voltage Unbalance Factor
2023 24th International Middle East Power System Conference (MEPCON), 2023Ahmed M. El-Bashbishi +1 more
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Voltage unbalance in low voltage distribution networks
16th International Conference and Exhibition on Electricity Distribution (CIRED 2001), 2001openaire +1 more source