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Title: NPC photovoltaic grid-connected inverter using proportional-resonant controller
Authors: Maswood, Ali Iftekhar
Dehghani Tafti, Hossein
Ukil, Abhisek
Ooi, Gabriel Heo Peng
Lim, Ziyou
Keywords: DRNTU::Engineering::Electrical and electronic engineering::Power electronics
Issue Date: 2014
Source: Dehghani Tafti, H., Maswood, A. I., Ukil, A., Ooi, G. H. P., & Lim, Z. (2014). NPC photovoltaic grid-connected inverter using proportional-resonant controller. 2014 IEEE PES Asia-Pacific Power and Energy Engineering Conference.
Abstract: Multi-megawatt photovoltaic (PV) power plants are widespread in electrical power systems because of the drastic decrease in the PV panel prices. The multi-string structure is considered for high power PV systems due to the increase in the overall energy conversion efficiency and the modularity when compared to the centralized topology. High power conversion can be achieved easily using parallel connection of several grid-tied two-level voltage-source inverters (2L-VSIs). However, this configuration complicates the control designs. Thus, this issue can be overcome by replacing these 2L-VSIs with a single high power three-level neutral point clamped inverter (3L-NPC). Moreover, the 3L-NPC inherits several attractive merits such as improved power quality with reduced total harmonic distortion (THD), increased overall efficiency as well as lower costs. In addition to that, the voltage oriented control using proportional-resonant (VOC-PR) in conjunction with the adaptive space vector modulation (ASVM) technique is proposed for the large-scaled PV system with grid-tied NPC inverter. The feasibility of the proposed control for the high power system is validated through the simulation results under various environmental conditions. Besides that, the dynamic mance of the system under the proposed VOC-PR is greatly enhanced in comparison with the conventional method using PI controller.
DOI: 10.1109/APPEEC.2014.7066201
Rights: © 2014 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. The published version is available at: [].
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Conference Papers
ERI@N Conference Papers

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