Results 111 to 120 of about 276 (138)
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Compensation of Distribution System Voltage Using Dynamic Voltage Restorer (DVR)
IEEE Power Engineering Review, 2002A dynamic voltage restorer (DVR) is a power electronic controller that can protect sensitive loads from disturbances in the supply system. This device can tightly regulate the voltage at the load terminal against imbalance or harmonic in the source side.
A. Ghosh, G. Ledwich
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2009 IEEE/PES Power Systems Conference and Exposition, 2009
Power quality has always been important for customers, but with increasing applications of electronic loads and controllers sensitive to the power quality, the subject has attracted renewed interest in recent times. Power quality encompasses several aspects.
Ahad. Kazemi, Ali. Azhdast
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Power quality has always been important for customers, but with increasing applications of electronic loads and controllers sensitive to the power quality, the subject has attracted renewed interest in recent times. Power quality encompasses several aspects.
Ahad. Kazemi, Ali. Azhdast
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Study on Compensation of Voltage Sag and Voltage Swell by Using DVR (Dynamic Voltage Restorer)
2018 International Conference on Current Trends towards Converging Technologies (ICCTCT), 2018Significant feature for electrical engineering is quality of power in modern days. Due to growing use of solid state, non-linear, power semiconductor switching devices power quality issues are formed. A power quality crisis refers to the problems that are cause by the increase of a non standard voltage or current or frequency.
Riddhi Pandya, FalRuni Bhavsar
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A supervisory hierarchical fuzzy controller for dynamic voltage restorer (DVR)
2015 23rd Iranian Conference on Electrical Engineering, 2015Dynamic voltage restorer (DVR) is a static Var compensator that plays an important role in voltage sag/swell compensation, especially during faults. This paper proposes a novel fuzzy logic based control structure to improve DVR performance. The proposed structure consists of two layers, namely, the lower or main layer and the upper or supervisor layer.
Sajjad Solat +2 more
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A novel technique for mitigation of voltage sag/swell by Dynamic Voltage Restorer (DVR)
2010 IEEE International Conference on Electro/Information Technology, 2010This paper deals with modeling and simulation technique of a Dynamic Voltage Restore (DVR). The DVR is a dynamic solution for protection of critical loads from voltage sags / swells. The DVR restores constant load voltage and voltage wave form by injecting an appropriate voltage.
R. A. Kantaria +2 more
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A robust control algorithm for self supported dynamic voltage restorer (DVR)
India International Conference on Power Electronics 2010 (IICPE2010), 2011The protection to the sensitive loads from voltage sags, swells and harmonics can be achieved using the dynamic voltage restorer (DVR) in a cost effective manner. In this paper, a new control algorithm based on unit templates and instantaneous symmetrical component theory along with complex Fourier series is used for the generation of reference ...
Parag Kanjiya +2 more
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The Role Of Dynamic Voltage Restorer (DVR) in improving power quality
2016 2nd International Conference on Advances in Electrical, Electronics, Information, Communication and Bio-Informatics (AEEICB), 2016One of the control strategies of DVR (Dynamic Voltage Restorer) is minimum energy control strategy which is explained in this paper. The main duty of power system is to supply their customers a uninterruptable power supply at all the times, but in practice it is not happening.
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A waveform synthesis technique for voltage sag compensation using dynamic voltage restorer (DVR)
2006 IEEE Power Engineering Society General Meeting, 2006This paper presents the development of a novel waveform synthesis technique for effective voltage sag compensation for multilevel inverter based dynamic voltage restorer (DVR). An effective control algorithm for calculation of reference compensating voltages based on PQR power theory together with space vector modulation (SVM) technique is implemented ...
V. Immanuel, G. Yankanchi
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Dynamic Voltage Restorer(DVR) with a Z-Source AC Converter Topology
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, 2010This paper proposes a new type of voltage sag-swell compensator based on a Z-source AC-AC converter. The proposed topology employs a pulse width modulation (PWM) Z-source AC-AC converter along with a injection transformer. A safe commutation strategy is used to eliminate voltage spikes on switches without snubber circuit. During a voltage sag or swell,
Young-Cheol Lim, Young-Gook Jung
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Software phase-locked loop applied to dynamic voltage restorer (DVR)
2001 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.01CH37194), 2002In this paper, the analytical and practical design issues of a software phase-locked loop (SPLL) for DVR are presented. A SPLL model that uses a lag/lead loop controller, is derived in order to analyse the system performance and filtering characteristic by the use of bode diagrams and root-locus methods. In DVR applications, parameters of the design of
null Changjiang Zhan +5 more
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