Results 261 to 270 of about 3,953 (304)

Voltage sag compensation with energy optimized dynamic voltage restorer

IEEE Transactions on Power Delivery, 2002
The compensation capability of a dynamic voltage restorer (DVR) depends primarily on the maximum voltage injection ability and the amount of stored energy available within the restorer. A new phase advance compensation (PAC) strategy for the DVR is proposed in order to enhance the voltage restoration property of the device.
Vilathgamuwa, Mahinda, Perera, A.A.D.R., Choi, San Shing   +2 more
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Dynamic Voltage Restorer lab prototype

2008 IEEE 2nd International Power and Energy Conference, 2008
Voltage sag according to the IEEE standard is a momentary decrease (10% - 90%) in the root mean square (rms) voltage magnitude where the duration is longer than half a cycle and less that one minute. The common causes of voltage sag are faults or short circuit in the system, starting of large loads and faulty wiring. Dynamic voltage restorer (DVR) is a
Agileswari K. Ramasamy, Vigna Ramachandaramurthy, Rengan Krishna Iyer   +2 more
openaire   +1 more source

Transformerless Dynamic Voltage Restorer for voltage sag mitigation

2016 Biennial International Conference on Power and Energy Systems: Towards Sustainable Energy (PESTSE), 2016
Dynamic Voltage Restorers are identified to be cost effective solution for protecting sensitive loads from voltage related power quality issues. The extension of cost reduction and efficiency can be improved by eliminating the injection transformer. This paper discusses a transformer-less dynamic voltage restorer based on three-single phase Voltage ...
V. Ansal, K. Ravikumar, P. Parthiban
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Mitigation of Voltage Sags by Dynamic Voltage Restorer

Journal of Automation and Control Engineering, 2014
Voltage sag is the most severe type of power quality disturbance faced by many commercial and industrial customers. The proliferation of voltage sag load equipment used in industrial plants may cause tremendous economic and financial losses up to millions of dollars attributed to a single disruption.
Jeyagopi Raman, Arwinder Singh
openaire   +1 more source

Sensitive loads voltage improvement using Dynamic Voltage Restorer

Proceedings of the 2011 International Conference on Electrical Engineering and Informatics, 2011
High quality energy is necessary to end-users domestic or industrial customers of the public electric distribution networks. The quality of the electric power is characterized by the measurement and the analysis of the electric disturbances which make it possible to understand the origin of the disturbances, to evaluate their impact on the sensitive ...
M.N. Tandjaoui, C. Benachaiba, O. Abdelkhalek, M. L. Doumbia, Y. Mouloudi   +4 more
openaire   +1 more source

Dynamic voltage restorer based on voltage space vector PWM control

APEC 2001. Sixteenth Annual IEEE Applied Power Electronics Conference and Exposition (Cat. No.01CH37181), 2001
A dynamic voltage restorer (DVR) based on the voltage-space-vector pulsewidth-modulation algorithm is presented. Phase-jump compensation is achieved using a software phase-locked loop and a lead-acid battery energy store. A battery-charging control technique using the DVR itself is also described.
Zhan, C., Ramachandaramurthy, V. K., Arulampalam, A., Fitzer, C., Kromlidis, S., Barnes, M., Jenkins, N.   +6 more
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Dynamic voltage restorer based on fuzzy logic control for voltage sag restoration

International Conference on Sustainable Energy and Intelligent Systems (SEISCON 2011), 2011
Power quality problems such as voltage sags are presently impor tant issues in the industrial field. The dynamic voltage restorer (DVR) is a series compensation device that mitigates voltage sag problems. Due to the nonlinearity of the D VR dynamic character istics, the compensating performance of the D VR is affected much by its control strategy.
D. Rajasekaran, S.S. Dash, D.R.A. Teja
openaire   +1 more source

Low Cost Dynamic Voltage Restorer

RE&PQJ
In this paper a low cost topology for compensation of voltage sags and swells is proposed. The dynamic voltage restorer neither uses rectifier stage nor dc capacitor and thyristors can be used as switching devices, resulting in a significant cost reduction.
null M. E. C. Brito, null M. C. Cavalcanti, null L. R. Limongi, null F. A. S. Neves   +3 more
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Dynamic voltage restorer development and testing

XI Brazilian Power Electronics Conference, 2011
The growing use of sensitive loads in the electric power system, especially in industrial applications, increases voltage sags related production losses considerably, stimulating a demand for power electronics' based solutions to mitigate the effects of such problems.
T.C. Monteiro, J. Camargo, S.U. Ahn, E. Bormio, T.M. Terrazas, F.P. Marafao, A.R. Giaretta, J.A. Jardini, L. Matakas, W. Komatsu   +9 more
openaire   +1 more source

Multilevel Optimal Predictive Dynamic Voltage Restorer

IEEE Transactions on Industrial Electronics, 2010
This paper presents an optimal predictive controller for a multilevel converter-based dynamic voltage restorer (DVR), which is able to improve the voltage quality of sensitive loads connected to the electrical power network. The optimal predictive controlled multilevel DVR can restore sags and short interruptions while reducing the total harmonic ...
J D Barros, J F Silva
openaire   +1 more source