A Simple Control Method for Neutral-Point Voltage Oscillation Reduction of Three-level Neutral-Point-Clamped Inverter
- Title
- A Simple Control Method for Neutral-Point Voltage Oscillation Reduction of Three-level Neutral-Point-Clamped Inverter
- Author
- 현동석
- Keywords
- Communication; Networking and Broadcast Technologies; Mathematical model; Inverters; Switches; Equations; Integrated circuit modeling; Oscillators; Indium phosphide; Small-signal model; Grid-connected; LCL filter; Multi-level inverter; Neutral-point-clamped inverter; Neutral-point voltage oscillation
- Issue Date
- 2013-11
- Publisher
- IEEE
- Citation
- IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society Industrial Electronics Society, IECON 2013 - 39th Annual Conference of the IEEE. :304-309 Nov, 2013
- Abstract
- Three-level Neutral-Point-Clamped inverter has inherent problem which is the neutral-point voltage fluctuation caused by the neutral-point current that flows into or out from the neutral-point. Even though the neutral point voltage is balanced with certain method, the oscillation of neutral point voltage is still remains due to the output phase current. If total capacitance of DC-link capacitor is smaller, the amplitude of oscillation is larger. In this paper, three-level neutral-point-clamped inverter system is analysed by the small-signal modeling and the control method reducing the oscillation of the neutral-point voltage is proposed. By the proposed method, the amplitude of the neutral-point voltage oscillation is reduced to almost zero. The validity of the proposed method is verified by the simulation and the experiment.
- URI
- http://ieeexplore.ieee.org/document/6699153/http://hdl.handle.net/20.500.11754/53890
- ISBN
- 978-1-4799-0224-8
- ISSN
- 1553-572X
- DOI
- 10.1109/IECON.2013.6699153
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > ELECTRICAL AND BIOMEDICAL ENGINEERING(전기·생체공학부) > Articles
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