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Automatic Voltage Regulator based on Series Voltage Compensation with AC Chopper

Title
Automatic Voltage Regulator based on Series Voltage Compensation with AC Chopper
Authors
전태준
Date Issued
2011
Publisher
포항공과대학교
Abstract
This paper proposes an automatic voltage regulator (AVR) based on series voltage compensation with an ac chopper. The proposed AVR is made up of a pulse-width-modulated (PWM) ac chopper and a transformer for series voltage compensation. In the ac chopper, the commutation problem is solved by switching patterns. The ac chopper provides direct ac-ac power conversion without energy storage elements, so the size and cost of the AVR are reduced. The ac chopper compensates for only the required voltage, so the switches have reduced ratings and stresses. Using bypass switches, the proposed AVR can compensate not only for the voltage sag but also the voltage swell of the input voltage. Experimental results verify that the proposed AVR quickly compensates for the voltage sag and swell of the input voltage.
URI
http://postech.dcollection.net/jsp/common/DcLoOrgPer.jsp?sItemId=000001094106
http://oasis.postech.ac.kr/handle/2014.oak/1178
Article Type
Thesis
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