http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Pengfan Xu (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
-
Pengfan Xu,Yue Wang,Taiyuan Yin,Shiyuan Yin,Zhang Wang,Kai Li 전력전자학회 2019 ICPE(ISPE)논문집 Vol.2019 No.5
With the development of new energy sources, more and more isolated islands are interconnected to grid through MMC. However, isolated islands systems are easily influenced by harmonic disturbances. The analytical analysis of the harmonic transfer characteristics between AC/DC side of the Modular Multilevel Converter (MMC) is of great significance for understanding the harmonic issues and stability analysis. In this paper, the quantitative analysis method of the harmonics on the DC-side excited by the AC-side harmonics of MMC is presented in this paper. First, the influence of harmonics on MMC electric system and control system is analyzed. Second, the equivalent MMC harmonic transfer model is established based on the average switching function. Finally, the analytical expression of DC-side harmonic transferred from AC-side is derived. A 232-level simulation model was built in MATLAB/Simulink. The accuracy and validity of the proposed analytical expression were verified by comparing the simulation results with the analytical results.
-
Discrete Time Modeling of Wireless Power Transfer System Using LCC Compensation Topology
Xiufang Hu,Yue Wang,Shuangqing Lv,Xiaoshuai Dong,Tianjin Chen,Yongbin Jiang,Pengfan Xu 전력전자학회 2019 ICPE(ISPE)논문집 Vol.2019 No.5
In recent years, wireless power transfer (WPT) technology has developed rapidly. However, conventional modeling methods for the dynamics of WPT suffer from the order increase problem and complicated derivations and expressions. In this paper, a discrete time modeling method is used for wireless power transfer systems which use magnetic resonant coupling. The proposed method aims on the dynamics of the overall WPT system, including the nonlinear inverter and rectifier. The orders of the developed models are lower than that of the generalized state space averaging method and the extended describing functions technique. Control to output voltage small-signal behaviors predicted by the discrete time model are verified by circuit simulation results.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
