期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2015
期号：MULTICON
页码：1391
出版社：S&S Publications
摘要：In this paper, different voltage injection schemes for dynamic voltage restorers (DVRs) are analyzedwith particular focus on a new method used to minimize the rating of the voltage source converter (VSC) used inDVR. A new control technique is proposed to control the capacitor-supported DVR. The control of a DVR isdemonstrated with a reduced-rating VSC. The reference load voltage is estimated using the unit vectors. Thesynchronous reference frame theory is used for the conversion of voltages from rotating vectors to the stationaryframe. The compensation of the voltage sag, swell, and harmonics is demonstrated using a reduced-rating DVR. .Result shows that this method can compensate voltage sag with a compensation error of 0.99%. Using this method,DVR may reduce voltage THD from 10.22% to 0.66%.
关键词：Dynamic voltage restorer (DVR); power quality; unit vector; voltage harmonics; voltage sag; voltage;swell. Harmonics; Fuzzy Logic Controller
