이중 변환 UPS 병렬 운전의 제어 동특성 향상을 위한 동기 좌표계 전압 제어기 구조
- Title
- 이중 변환 UPS 병렬 운전의 제어 동특성 향상을 위한 동기 좌표계 전압 제어기 구조
- Other Titles
- Voltage Control Scheme in Synchronous Reference Frame for Improving Dynamic Characteristics in Parallel Operation of Double-Conversion UPSs
- Author
- 윤영두
- Keywords
- Additional feed-forward; Discrete-time current control; Double-conversion UPS; Synchronous reference frame controller; 2-DOF control
- Issue Date
- 2022-08
- Publisher
- 전력전자학회
- Citation
- 전력전자학회 논문지, v. 27, NO. 4, Page. 283-290
- Abstract
- This study proposes a voltage control scheme in a synchronous reference frame to improve the dynamic characteristics of double-conversion UPSs. UPSs need to control positive and negative sequence voltage, so that positive and negative sequence extractors are generally used to obtain each sequence of the voltage and current. Voltage and current controllers for each sequence are implemented. However, the extractor causes considerable delay, and the delay restricts the control performance, especially for the current controller. To improve the dynamics of the current controller, the proposed scheme adopts a unified current controller without separating positive and negative sequences. By using discrete-time current controller, the control bandwidth can be extended significantly so that negative sequence current can be controlled. To enhance the performance, an additional feed-forward technique for output voltage regulation is proposed. The validity of the proposed controller is verified by experiments.
- URI
- http://koreascience.or.kr/article/JAKO202223458353133.pagehttps://repository.hanyang.ac.kr/handle/20.500.11754/177954
- ISSN
- 1229-2214;2288-6281
- DOI
- 10.6113/TKPE.2022.27.4.283
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > AUTOMOTIVE ENGINEERING(미래자동차공학과) > Articles
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