TY - JOUR
T1 - Grid-Connected Symmetrical Cascaded Multilevel Converter for Power Quality Improvement
AU - Mortezaei, Ali
AU - Simoes, Marcelo Godoy
AU - Busarello, Tiago Davi Curi
AU - Marafao, Fernando Pinhabel
AU - Al-Durra, Ahmed
N1 - Funding Information:
Manuscript received March 2, 2017; revised May 31, 2017, July 29, 2017, November 1, 2017, and December 19, 2017; accepted January 1, 2018. Date of publication January 14, 2018; date of current version May 18, 2018. Paper 2017-IACC-0240.R4, presented at the 2016 IEEE Industry Applications Society Annual Meeting, Portland, OR, USA, Oct. 2–6, and approved for publication in the IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS by the Industrial Automation and Control Committee of the IEEE Industry Applications Society. This work was supported in part by the Petroleum Institute (PI) under Grant 470039. (Corresponding author: Ali Mortezaei.) A. Mortezaei and M. G. Simões are with the Electrical Engineering Department, Colorado School of Mines, Golden, CO 80401 USA (e-mail: [email protected]; [email protected]).
Publisher Copyright:
© 1972-2012 IEEE.
PY - 2018/5/1
Y1 - 2018/5/1
N2 - This paper discusses the use of a cascaded multilevel converter for flexible power conditioning in smart-grid applications. The main feature of the proposed scheme is the use of independent dc links with reduced voltages, which makes such a topology an ideal candidate for medium- and high-power applications with increased reliability. The developed control strategy regulates independent dc-link voltages in each H-bridge cell, and allows the selective and flexible compensation of disturbing currents under a variety of voltage conditions without requiring any reference frame transformation. The selective control strategies are based on the decompositions proposed in the conservative power theory, which result in several current-related terms associated with specific load characteristics. These current components are independent of each other and may be used to define different compensation strategies, which can be selective in minimizing particular effects of disturbing loads. Experimental results are provided to validate the possibilities and performance of the proposed control strategies, considering ideal and deteriorated voltage conditions.
AB - This paper discusses the use of a cascaded multilevel converter for flexible power conditioning in smart-grid applications. The main feature of the proposed scheme is the use of independent dc links with reduced voltages, which makes such a topology an ideal candidate for medium- and high-power applications with increased reliability. The developed control strategy regulates independent dc-link voltages in each H-bridge cell, and allows the selective and flexible compensation of disturbing currents under a variety of voltage conditions without requiring any reference frame transformation. The selective control strategies are based on the decompositions proposed in the conservative power theory, which result in several current-related terms associated with specific load characteristics. These current components are independent of each other and may be used to define different compensation strategies, which can be selective in minimizing particular effects of disturbing loads. Experimental results are provided to validate the possibilities and performance of the proposed control strategies, considering ideal and deteriorated voltage conditions.
KW - Active power filters
KW - compensation strategies
KW - multilevel inverter
KW - reactive compensation
KW - selective compensation
KW - unbalance compensation
UR - http://www.scopus.com/inward/record.url?scp=85041679974&partnerID=8YFLogxK
U2 - 10.1109/TIA.2018.2793840
DO - 10.1109/TIA.2018.2793840
M3 - Article
AN - SCOPUS:85041679974
SN - 0093-9994
VL - 54
SP - 2792
EP - 2805
JO - IEEE Transactions on Industry Applications
JF - IEEE Transactions on Industry Applications
IS - 3
ER -