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Reduction Method of Circulating Current for Parallel Connected Inverters Using Proportional Resonant Control
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Publication Year
2023-01-01
Journal
ICPE 2023-ECCE Asia - 11th International Conference on Power Electronics - ECCE Asia: Green World with Power Electronics
Publisher
Institute of Electrical and Electronics Engineers Inc.
Citation
ICPE 2023-ECCE Asia - 11th International Conference on Power Electronics - ECCE Asia: Green World with Power Electronics, pp.2296-2301
Keyword
Circulating CurrentModular InverterParallel Connected InverterProportional Resonant Control
Mesh Keyword
Circulating currentControl methodsModular inverteModularsOutput currentParallel connected inverteParallel-connectedParalleled invertersProportional-resonant controlsReduction method
All Science Classification Codes (ASJC)
Hardware and ArchitectureEnergy Engineering and Power TechnologyElectrical and Electronic Engineering
Abstract
This paper proposes a reduction method of circulating current for parallel connected inverters using proportional resonant (PR) control. Paralleled inverter has been increasingly applied in many power conversion systems such as renewable energy systems, motor drives, and energy storage systems. Modular inverters have several advantages of convenient maintenance and adjustable rating of power by the number of modules. However, a circulating current of paralleled inverter is generated due to the difference in the output parameters in each module. The circulating current distorts the quality of output current and deteriorates the performance of the parallel systems. To mitigate the problems, a reduction method is proposed using the PR controller of the paralleled connected inverter. The PR control method extracts the third harmonics of output current to reduce the circulating current of low-frequency component. The proposed method controls the low-frequency circulating current applying only controllers. The simulation results demonstrate the validity of the proposed control method.
Language
eng
URI
https://aurora.ajou.ac.kr/handle/2018.oak/37000
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85170640868&origin=inward
DOI
https://doi.org/10.23919/icpe2023-ecceasia54778.2023.10213547
Journal URL
http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=10213399
Type
Conference
Funding
This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20225500000110)
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Lee, Kyo-Beum이교범
Department of Electrical and Computer Engineering
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