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http://dx.doi.org/10.6113/TKPE.2010.15.4.327

A Single-Phase Quasi Z-Source Dynamic Voltage Restorer(DVR)  

Lee, Ki-Taeg (전남대 대학원 전기공학과)
Jung, Young-Gook (대불대 융합기술학부)
Lim, Young-Cheol (전남대 전기공학과)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.15, no.4, 2010 , pp. 327-334 More about this Journal
Abstract
This paper deals with a single-phase dynamic voltage restorer(DVR) with a quasi Z-source topology. The proposed system based on a single-phase quasi Z-source PWM ac-ac converter which have features such as the input voltage and output voltage are sharing ground, and input current operates in continuous current mode(CCM). For the detection of voltage sag-swell, peak voltage detection method is applied. Also, the circuit principles of the proposed system are described. During the 60% severe voltage sag and 30% voltage swell, the proposed system controls the adding or missing voltage and maintains the rated voltage of sinusoidal waveform at the terminals of the critical loads. Finally, PSIM simulation and experimental results are presented to verify the proposed concept and theoretical analysis.
Keywords
Instantaneous voltage sag-swell compensation; Dynamic voltage restorer(DVR); Quasi Z-source PWM ac-ac converter; Peak voltage detection method;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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