A Novel Neutral-Point Potential Balance Strategy for Three-Level NPC Back-to-Back Converter Based on the Neutral-Point Current Injection Model
Joint Authors
Wang, Yingjie
Liu, Haiyuan
Wang, Wenchao
Wang, Kangan
Source
Mathematical Problems in Engineering
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-03-04
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
The neutral-point (NP) potential balance control in three-level neutral-point-clamped (NPC) back-to-back converter is a research nodus.
Its current strategies are the same as the strategies of a single three-level NPC converter.
But the strategies do not give full play to its advantages that the neutral-point current can only flow through the connected midlines in both sides of the converter but does not flow through the DC-bus capacitors.
In this paper, firstly the NP potential model based on the NP current injected is proposed.
It overcomes numerous variable constraints and mutual coupling in the conventional model based on the zero-sequence voltage injected.
And then on this basis, three NP-potential balance control algorithms, unilateral control, bilateral independent control, and bilateral coordinated control, are proposed according to difference requirements.
All of these algorithms use the midlines rather than the DC-bus capacitors to flow the NP current as much as possible.
Their control abilities are further quantitatively analyzed and compared.
Finally, simulation results verify the validity and effectiveness of these algorithms.
American Psychological Association (APA)
Wang, Yingjie& Liu, Haiyuan& Wang, Wenchao& Wang, Kangan. 2015. A Novel Neutral-Point Potential Balance Strategy for Three-Level NPC Back-to-Back Converter Based on the Neutral-Point Current Injection Model. Mathematical Problems in Engineering،Vol. 2015, no. 2015, pp.1-12.
https://search.emarefa.net/detail/BIM-1074615
Modern Language Association (MLA)
Wang, Yingjie…[et al.]. A Novel Neutral-Point Potential Balance Strategy for Three-Level NPC Back-to-Back Converter Based on the Neutral-Point Current Injection Model. Mathematical Problems in Engineering No. 2015 (2015), pp.1-12.
https://search.emarefa.net/detail/BIM-1074615
American Medical Association (AMA)
Wang, Yingjie& Liu, Haiyuan& Wang, Wenchao& Wang, Kangan. A Novel Neutral-Point Potential Balance Strategy for Three-Level NPC Back-to-Back Converter Based on the Neutral-Point Current Injection Model. Mathematical Problems in Engineering. 2015. Vol. 2015, no. 2015, pp.1-12.
https://search.emarefa.net/detail/BIM-1074615
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1074615