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RISS 인기검색어
- 검색키워드
- 저자 : Singh Sourav (검색결과 3 건)
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Internal Model Control of DFIG Based Micro Wind Energy Conversion System
Sourav Bose,S.P.Singh 제어로봇시스템학회 2019 제어로봇시스템학회 국제학술대회 논문집 Vol.2019 No.10
Amongst the alternative renewable energy sources, the micro wind energy conversion system promises of reliability, cost effectiveness in rural areas where grid power is unavailable for electrification calling for sustainable development. Numerous studies on the control schemes are being conducted to generate electrical energy from the available wind energy using doubly fed induction generator (DFIG). In this paper, the internal model control (IMC) method is used to control rotor currents, speed and stator reactive power of DFIG based wind energy conversion system(WECS). The result is stator flux reference frame proportional integral (PI) or PI-type controllers, and the parameters of the controllers are directly expressed in certain parameters of the DFIG and the desired bandwidth of the close loop. This Process eliminates the trial and error steps to tune the PI controllers during vector control of DFIG. A 1 hp wound type induction generator coupled with 1 kW dc motor is used for the experiment. Performance of the propose single VSC based DFIG has been analyzed under different conditions.
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Sourav Das,Preetam Singh,KMK Srivatsa 한국물리학회 2015 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.66 No.5
Cerium-oxide (CeO2) microcrystals have been synthesized on a biaxially textured Ni-5%W (200)substrate by using the Electron beam (e-beam) evaporation technique with CeO2 powder as thesource material. The substrate temperature and electron beam gun power at which the microcrystalswere formed were 400◦C and 400 W, respectively. The X-ray diffraction (XRD) analysis confirmedthe crystallinity and a (111) orientation of the CeO2 crystals. Scanning electron microscope (SEM)image showed that the CeO2 crystals had large lateral dimensions in the range from 0.5 to 2.0 μm. The Raman spectrum shows only one peak at 464 cm−1 corresponding to the of F2g mode of theCeO2 crystals. No reports are available on the preparation of CeO2 crystals with such a large sizeon textured Ni-W substrate by using e-beam evaporation technique.
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Chini Deep Sankar,Mondal Niladri,Kar Avijit,Bunholi Ingrid,Singh Sourav,Ghosh Pratik,Patra Prasanta,Patra Shampa,Patra Bidhan Chandra 한국해양과학기술원 2023 Ocean science journal Vol.58 No.2
Marine fishes are one of the important factors in stabilizing the local aquatic ecosystem and regulating the nutritional socioeconomy of local fisher folks. The recent increases in anthropogenic activity, pollution and overfishing have led to the decline of marine fish species richness and their local aquatic habitats. In this study we sought to determine the inter-relationship between water quality, anthropogenic activity, and fish landing stations through a 31 km stretch of the East Midnapore coast in West Bengal, India which is known for its tourist destinations. The study was conducted monthly on different trawler fish landing sites from Dec 2018 to Dec 2021. During this period, we took fish samples and identified them. We obtained water quality data regarding Sea Surface Temperature (SST), Concentration of Chlorophyll-a (Chl-a), Turbidity, and Dissolved Oxygen (DO) in order to identify further correlation between the water quality analysis and species diversity. 154 numbers of commercially important marine fish species were documented. As per the IUCN database, 13% of the total fish species fall under the red list category and 16% of the species reveal a decreasing population trend. The availability of those red-listed fish throughout the season has been shown in the matrix plot to detect their gradual decrease in sighting. After analyzing the water quality data, we found out that DO, SST, Turbidity, and Chl-a correlate with the species richness on some sites and the water parameters are also differs during the seasons. Both fish species richness and water quality have been affected on those fish landing sites which have been subject to heavy anthropogenic loads.
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