National Institute of Technology, Silchar

About: National Institute of Technology, Silchar is a education organization based out in Silchar, Assam, India. It is known for research contribution in the topics: Control theory & Electric power system. The organization has 1934 authors who have published 4219 publications receiving 41149 citations. The organization is also known as: NIT Silchar.

Multistability and Hidden Attractors in the Dynamics of Permanent Magnet Synchronous Motor

Abstract: This paper attempts to find some interesting and unique properties in the dynamics of a permanent magnet synchronous motor (PMSM). When compared with the existing literature on the dynamics of a PM...

Removal of Brilliant Green dye from water by modified Bambusa Tulda : adsorption isotherm, kinetics and thermodynamics study

Abstract: The present research is based on the removal of Brilliant Green dye from synthetic wastewater which is one of the emerging hazardous contaminant. Adsorption technology was used to remove Brilliant Green dye using sodium carbonate-treated Bambusa Tulda as bio-adsorbent to replace costly activated carbon. Initial experiment shows the best removal of Brilliant Green dye done by sodium carbonate-treated Bambusa Tulda as compared to hydrochloric acid-treated Bambusa Tulda and distilled washed Bambusa Tulda. Scanning electron microscope, Fourier transform infrared spectroscopy and energy diffractions and X-ray analysis were done to identify functional group, surface characteristic and elemental constituents of sodium carbonate-treated Bambusa Tulda. The adsorption parameters have direct influence onto sodium carbonate-treated Bambusa Tulda for Brilliant Green dye removal. Optimum removal (98%) of dye was obtained at equilibrium time 60 min at pH 7, adsorbent dose 10 g/l, rotation per minute 200 and 298 K. Experimental data were fitted into four isotherm models and Langmuir isotherm best fitted with maximum adsorption capacity = 41.67 mg/g. Kinetics rate data fit better in pseudo-second-order model. Activation energy was observed as 16.802 kJ/mole, and the adsorption was diffusion control process. The chemical oxygen demand values of Brilliant Green dye decreased from 136 to 72 mg/l after the adsorption of Brilliant Green with sodium carbonate-treated Bambusa Tulda. Thus, it can be concluded that sodium carbonate-treated Bambusa Tulda is an efficient adsorbent and an alternative to activated carbon for the removal of Brilliant Green dye from synthetic wastewater.

Non-traditional machining process selection using integrated fuzzy AHP and QFD techniques: a customer perspective

Abstract: With the advancement in material science and engineering, hard as well as difficult to cut materials are coming to the fore on regular basis Machining such advanced materials with higher geometrical accuracy by conventional means is almost impossible Thus, demand for higher accuracy with desired surface finish leads us to a large pool of non-traditional machining (NTM) processes However, zeroing-in for a particular NTM process, for a particular operation and for a case-specific machining, is a cumbersome task In order to make this task simpler for a decision-maker, the present research uses, fuzzy analytic hierarchy process to calculate the relative importance of various NTM processes taking product and process characteristics as the comparison basis Finally, an overall score of various NTM processes have been obtained using quality function deployment methodology based on various shape features and work material combination Also, the variations in the process capability features have been taken int

Optimal Energy Routing in Microgrids With IEC 61850 Based Energy Routers

Abstract: The concept of energy Internet (EI) is very promising due to its ability to integrate distributed generators and storage devices Energy routers (ERs) enable highly efficient, reliable, and flexible power system operation To dynamically control and optimize energy flow in EI, an extensive communication is required Considering the diversity of generators and ERs, it is crucial that such communication is achieved in a standardized and interoperable way In this paper, an improved energy routing algorithm and its impact in EI operation are demonstrated Furthermore, a full communication solution is developed for ERs and their interaction with grid operator This paper proposes an International Electrotechnical Commission (IEC) 61850 communication-based power routing algorithm in microgrids Optimal selection of source and routing path is achieved according to the proposed algorithm and communicated to the ERs via IEC 61850 based communication The effectiveness of the proposed IEC 61850 communication-based routing algorithm is verified on network emulation platform comprising of IEC 61850 emulator tools and network simulator tool

Adsorption of crystal violet from wastewater by modified Bambusa tulda

Abstract: In the present study sodium carbonate modified Bambusa tulda was utilised for the removal of crystal violet dye from aqueous solution. The functional group characterization and the surface morphology was done by Fourier Transform Infrared Spectroscopy (FTIR) and Scanning Electron Microscope (SEM). It confirms the hydroxyl groups and carboxyl group present on the surface of modified Bambusa tulda. The optimum condition for the removal of crystal violet was taken place at pH 7, 200 rpm, dose at 10gm/l, initial concentration 50 mg/l, at equilibrium time 60 minutes and 298 K temperature with maximum adsorption capacity of 20.84 mg/gm. The adsorption of crystal violet by modified Bambusa tulda best fits in Langmuir isotherm model with R2 value 0.924 and Pseudo 2nd order rate equation model with R2 value of 0.999. Other parameters like isosteric heat analysis, thermodynamics profile and activation energy were investigated. Thus, modified Bambusa tulda can be an efficient and economically used as an alternative for activated carbon for the removal of crystal violet from waste water.