NDLI: Model predictive control for parallel three-level T-type grid-connected inverters in renewable power generations

Content Provider	IET Digital Library
Author	Xing, Xiangyang Zhang, Chenghui He, Jinwei Chen, Alian Zhang, Zicheng
Abstract	As the penetration of renewable power generation units connected to the grid increases, high power quality and high efficiency have been widespread concerned. The parallel 3LT2Is are necessary to improve the quality and efficiency of applications. The use of common dc-link without isolating transformers will cause the zero-sequence circulating current (ZSCC) problem. This study proposes a finite control set model predictive current control to suppress the ZSCC, balance the neutral-point (NP) voltage as well as control the currents with fast transient response. The cause of the ZSCC generated in the parallel 3LT2I is analysed. The proposed ZSCC suppression technique is achieved through changing the redundant small vectors in the parallel 3LT2Is. Moreover, the coupling problem between the ZSCC and NP balance is solved by the amplitude comparison of NP voltage and ZSCC. As a result, better ZSCC suppression and NP voltage performance can be achieved in different output currents and filter inductance condition. The proposed method has been verified experimentally.
Starting Page	1353
Ending Page	1363
Page Count	11
ISSN	17521416
Volume Number	11
e-ISSN	17521424
Issue Number	Issue 11, Sep (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-rpg/11/11
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-rpg.2016.0361
Journal	IET Renewable Power Generation
Publisher Date	2017-04-11
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Common Dc-link Control of Electric Power System Current Control Electric Current Control Electric Power Generation Fast Transient Response Finite Control Set Model Predictive Current Control Harmonics Invertors Neutral-point Voltage NP Voltage Performance Optimal Control Parallel 3LT2Is Analysis Parallel Three-level T-type Grid-connected Inverter Power Grid Power Quality Power Supply Quality Predictive Control Redundant Small Vector Renewable Power Generation Unit Penetration Transient Response Voltage Control Zero-sequence Circulating Current Problem ZSCC Suppression Technique
Content Type	Text
Resource Type	Article
Subject	Renewable Energy, Sustainability and the Environment

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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