3-레벨 NPC 인버터의 소신호 모델링과 중성점 전압 진동 저감

Title
3-레벨 NPC 인버터의 소신호 모델링과 중성점 전압 진동 저감
Other Titles
A Small Signal Modeling of Three-level Neutral-Point-Clamped Inverter and Neutral-Point Voltage Oscillation Reduction
Author
현동석
Keywords
Grid connected inverter system; Small signal modeling; Neutral point current; Neutral point voltage
Issue Date
2014-10
Publisher
전력전자학회
Citation
전력전자학회논문지, 19권, 5호, pp.407-414
Abstract
This study proposes a control design for the grid output current and for reducing the neutral-point voltage oscillation through the small-signal modeling of the three-phase grid connected with a three-level neutral-point-clamped (NPC) inverter with LCL filter. The three-level NPC inverter presents an inherent problem: the neutral-point voltage fluctuation caused by the neutral-point current flowing in or out from the neutral point. The small signal modeling consists of averaging, dq0 transformation, perturbing, and linearizing steps performed on a three-phase grid connected to a three-level NPC inverter with LCL filter. The proposed method controls both the grid output and neutral-point currents at every switching period and reduces the neutral-point voltage oscillation. The validity of the proposed method is verified through simulation and experiment.
URI
http://www.dbpia.co.kr/Article/NODE02486516http://hdl.handle.net/20.500.11754/52346
ISSN
1229-2214
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ELECTRICAL AND BIOMEDICAL ENGINEERING(전기·생체공학부) > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE