Power Quality Improvement by Using Multipulse AC-DC Converters for Varying Loads B.Suresh Kumar International Journal of Scientific Engineering and Technology 2014

International Journal of Scientific Engineering and Technology (ISSN : 2277-1581) Volume No.3 Issue No.2, pp : 78 - 84 1 Feb 2014 Power Quality Improvement by Using Multipulse AC-DC Converters for Varying Loads B.Suresh Kumar Asst.Professor,EEE dept,CBIT-Hyderabad
FULL PAPER
http://ijset.com/ijset/publication/v3s2/IJSET_2014_201.pdf

Multipulse AC–DC Converters for Improving Power Quality: A Review Bhim Singh,Sanjay Gairola

Bhim Singh, Senior Member, IEEE, Sanjay Gairola, Brij N. Singh, Member, IEEE, Ambrish Chandra, Senior Member, IEEE, and Kamal Al-Haddad, Fellow, IEEE
Abstract—Three-phase multipulse ac–dc converters (MPC) are developed for improving power quality to reduce harmonics in ac mains and ripples in dc output. This paper deals with the multipulse ac–dc converter configurations, state of art, their performance, power quality aspects, components selection considerations, latest trends, future developments, and potential applications. It is targeted to provide broad perspective on multipulse converter technology to the researchers, engineers, and designers dealing with them. A classified list of more than 250 research publications on the subject is also given for quick reference.

Ensaio Retificador trifásico Nominal ENG. LUIZ DANIEL SANTOS BEZERRA INSTITUTO FEDERAL DE EDUCAÇÃO, CIÊNCIA E TECNOLOGIA DO CEARÁ BRASIL

Automatic voltage regulator based on series voltage compensation with ac chopper C.-Y. Park1 J.-M. Kwon2 B.-H. Kwon Department of Electronics and Electrical Engineering, Pohang University of Science and Technology

Automatic voltage regulator based on series voltage compensation with ac chopper
C.-Y. Park1 J.-M. Kwon2 B.-H. Kwon1 1
Department of Electronics and Electrical Engineering, Pohang University of Science and Technology 2Department of Electrical Engineering, Hanbat National University, Daejeon, Republic of Korea E-mail: jmkwon@hanbat.ac.kr
Abstract: This study 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 for 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.

Advanced Control of Three-Phase Four-Wire Inverters using Feedback Linearization under Unbalanced and Nonlinear Load Conditions Vo, Nguyen Qui Tu ; Lee, Dong-Choon ; Dept. of Electrical Eng., Yeungnam University KOREA -AUGUST 2013

Advanced Control of Three-Phase Four-Wire Inverters using Feedback
Linearization under Unbalanced and Nonlinear Load Conditions
Nguyen Qui Tu Vo1, and Dong-Choon Lee
Dept. of Electrical Eng., Yeungnam University-KOREA
 Journal title : The Transactions of the Korean Institute of Power Electronics
Volume 18, Issue ,4,  2013, pp.333-341
Publisher : The Korean Institute of Power Electronics
Abstract - In this paper, a feedback linearization control is proposed to regulate the output voltages of a three-phase four-wire inverter under the unbalanced and nonlinear load conditions. First, the nonlinear model of system including the output LC filters is derived in the d-q-0 synchronous reference frame. Then, the system is linearized by the multi-input multi-output feedback linearization. The tracking controllers for d-q-0-components of three-phase line-to-neutral load voltages are designed by linear control theory. The experimental results have shown that the proposed control method gives the good performance in response to the load conditions.
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