DVR의 특성을 고려한 매칭변압기의 자속포화 해석
- Authors
- 손진근; 김동준; 강민구; 전희종
- Issue Date
- 2008
- Publisher
- 대한전기학회
- Keywords
- Matching Transformer; Magnetic Flux Saturation; Dynamic Voltage Restorer(DVR); PWM Inverter; Inrush Current; Modeling Method
- Citation
- 전기학회 논문지 P권, v.57, no.3, pp.236 - 243
- Journal Title
- 전기학회 논문지 P권
- Volume
- 57
- Number
- 3
- Start Page
- 236
- End Page
- 243
- URI
- http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/16964
- ISSN
- 1229-800x
- Abstract
- This paper analyses magnetic flux saturation of matching transformer considering characteristic of dynamic voltage restorer(DVR) system to solve voltage sags which are considered the dominant disturbances affecting power quality. This DVR consist of PWM inverter to inject arbitrary voltage, LC low pass filter and matching transformer for isolation and grid connection. However, the matching transformer has an excess of inrush current by magnetic flux saturation in the core of transformer. Due to this inrush current, the rating of matching transformers is double for needed nominal rating for protection of DVR. Therefore, in this paper, an advanced modeling method of magnetic flux saturation is used to analyze a magnitude and characteristic of magnetizing current. Simulation and experimental results considering characteristic of DVR system are provided to demonstrate the validity of the proposed analysis method.
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Collections - College of Engineering > School of Electrical Engineering > 1. Journal Articles
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