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 : Sida Fu (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
-
Sida Fu,Xueguang Zhang,Dianguo Xu 전력전자학회 2019 ICPE(ISPE)논문집 Vol.2019 No.5
The three-phase grid-connected converter control system and the grid impedance are coupled with each other under weak grid conditions, which brings in negative influence on the system. In this paper, the impedance model of a three-phase grid-connected converter including current loop, PLL and DC voltage loop is established in d-q frame. The influence of PLL and DC voltage loop proportional coefficient on system stability is analyzed. According to the transfer relationship of each variable in the impedance model, the PCC voltage perturbation paths to the PLL and DC voltage loop are analyzed respectively. On the basis of voltage perturbation paths, a compensation control strategy is proposed. The impedance analysis results show that the proposed method can effectively improve the system stability under weak. The experimental results verify the correctness of the theoretical analysis and the effectiveness of the proposed method.
-
Under-Oil Superhydrophilic and Flame-Retardant Fabrics for Water Removal from Oil
Sida Fu,Haidong Li,Yue Jiang,Yan Zhao,Zhiguang Xu 한국섬유공학회 2023 Fibers and polymers Vol.24 No.8
In this study, superamphiphilic fabrics with under-oil superhydrophilic property have been prepared using trimesoyl chloride (TMC), tetrakis(hydroxymethyl) phosphonium chloride (THPC), and urea as coating materials. Owing to the unique under-oil superhydrophilicity, the coated fabric is able to absorb water droplets dispersed in oil, and oil stains on the coated fabric (dry) can be easily cleaned off just by rinsing with water (without the use of detergent), showing strong anti-oil-fouling ability. The coating is durable enough to withstand at least 50 cycles of home laundering, 1000 cycles of Martindale abrasions, as well as acid/base etching for 12 h without losing its under-oil superhydrophilic property. Meanwhile, the coated fabric exhibits excellent flame-retardant properties, with an oxygen limiting index (LOI) of 39.5% and a char length of 8.5 cm in vertical flame test. This multi-functional coating may find wide applications in functional textiles, water recovery, and flame-retardant field.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
