International Journal of LNCT

ISSN (Online):2456-9895



Volume-2 Issue-7 August-2018

[1] Static and dynamic analysis of proposed STATCOM design

Vidya Rashmi, Manju Khare and Sandeep Kumar

This paper imposes a multilevel H-bridge converter with star configuration. These compensators have an important role in increasing the power quality in power systems because of having features investigated in various studies and because of the proper implementation of power functions, especially in compensating the voltage flicker. In particular, for STATCOM applications the phase leg of the converter is constituted by a number of single-phase full-bridge converters connected in cascade. This paper is about theorizing at the control level, which eventually ends in producing the proper gate signals to control the switching of the electronic power switches in the STATCOM. This STATCOM has been implemented for use in both dynamic load conditions and static load conditions. The results show that it has very efficiently managed the supply of the power in and to the dynamic system as well as constant load conditions. The power output from the device has been concluded to be significantly improved.

[2] Efficient VLSI architecture for combinational and sequential circuits with the help of

serial and parallel techniques

Kirti Dhakad and Shraddha Shrivastava

Evolution of combinational and sequential circuit in very high scale integrated circuit hardware description language (VHDL) and evaluates its performance with respect to logic speed, number of slice and maximum frequency. Structural implementation of linear feedback shift register, counter and XOR/ XNOR gate in VHDL is configurable in terms of different parameter. The target device used for implementation of combinational and sequential circuit is Xilinx software with Spartan-3 device family. The output waveforms and timing report are also discussed.

[3] Cache memory management in big data

Rajesh Kumar and Manish Shrivastava

Big data processing consumes resources at very large scale and its very challenging to manage the memory for each running process. Researchers have developed the some memory management schemes which can synchronize the data flow for each process. Processes use two memories i.e. Main memory which retains only current processing data and cache which retains frequent required data for processes. It is very challenging to replace the cache data with new one because, during the processing of large volume data, process may claim any data block, so due to random block replacement, process may have to wait for a long time which may result unnecessarily delay. In this paper, we will explore the current research work related to cache management.

[4] A review on efficient parallel filter design of coding scheme with lower delay and area profile

Kavita Goswami and A.K.Shrivastava

The increasing demand of low complexity and error tolerant design in signal processing systems is a reliability issue at ground level. Complex circuit is consistently affected by soft errors in modern electronic circuits. Different algorithms have been used in earlier techniques for achieving fault tolerant coverage design. In real time application systems, numbers of blocks operating in parallel are frequently used. As complexity is continuously increasing , design and reliability engineers will demand to address several key areas to enable advanced SoC (System-on-chip) products in commercial sector. Many techniques has been identified for error free circuit in which fault tolerant parallel filter using Error correction codes is latest.

[5] Analysis of VCRS by replacement of reciprocating compressor with screw compressor

Prashant Nema and Jitendra Raghuwanshi

Refrigeration is one of the buzzing words in society as well as in industry to keep the items at lower temperature without any harm. Further it is designed in various ways for particular purpose. It has been reported that it consumes more energy to provide the comfort ability compressor is one of the key components in refrigeration that consumes more energy while running of the refrigeration plant. Many researchers are reported to be feasible choices for many types of compressor including reciprocating, centrifugal and screw compressor so that the less energy are consumed. Hence, the more energy saving is possible in forms of electricity. The main advantages of using this alternative compressor are its renewability, compatibility and lesser power consumption. It is environmentally friendly alternative to conventional for use in existing system. It is expected that the replacement of compressor will give a new insight to the refrigeration plant. To keep all above in the mind the research objective will be set for the present research work.

[6] To study and performance analysis of cooling tower

Pushpendu Baral, Jitendra Raghuwanshi and Sachin Nikam

In this project the performance of cooling tower has been analyzed by varying inlet air parameters with different air inlet angles and by attaching a nozzle in air inlet. The cooling tower analyzed which is used specifically for small scale industries, forced draft counter-flow cooling tower with single module capacities from 10 to 100 cooling tons. 50 tons cooling capacity model has been taken as reference model. The analysis has been done by using computational fluid dynamics (CFD) ANSYS 14.5 software. The water cooling happens because of humidification of air. The heat lost by water is heat gained by air. Water recirculation is also important aspect in the cooling towers. The effectiveness of cooling tower depends on flow rates of air and water and water temperature. Minimization of heat loss is one of the important aspect of studies carried out by various investigators. The interfacial area between air and water is also crucial factor in cooling towers. Three types of pickings used in cooling towers are film, splash and film-grid pickings. Also it was observed that drift is one of the important losses in cooling towers. Various shapes of cooling towers are tried by various investigators to study effectiveness.

[7] Computational fluid dynamics (CFD) analysis of bifurcated vessel

Ram Kumar Raman, Yogesh Dewang and Jitendra Raghuwanshi

The present study focuses on the CFD analysis of bifurcated blood vessel using ABAQUS /CFD 6.14 software in order to investigate the effect of variation in fluid flow within bifurcated vessel through associated amplitudes of flow. Besides this, study also focuses majorly on the effect of different types of fluids used for flow within bifurcated vessel. The aim of the present research work is to investigate the effect of seven different Types of amplitudes of fluid flow and two different types of fluids on fluid flow field variables in a bifurcated blood vessel.

[8] Comparative analysis of ceiling swirl diffuser and under floor swirl diffuser placement

in indoor environment

Ravi Pratap Singh, Sachin Kumar Nikam and Deenoo Pawar

In an indoor environment proper air distribution is important for cooling as well as comfort condition and it is managed by placing an air conditioning duct inside the room. In this research work we placed both the ceiling based and under floor based swirl diffuser to evaluate the performance characteristics for thermal comfort condition inside the indoor space. We have formed wooden swirl diffuser having the angle 100, 110, 120 and placed inside an acrylic sheet wooden room of size 4ft x 4ft x 5ft and supply cool air by air conditioning duct both ceiling side or under floor side for comparative analysis of air pattern and temperature variation throughout the indoor space. After this analysis we can able to suggest which type of placement of diffuser is better and provide proper air distribution inside the indoor space.