International Journal of Engineering Research and General Science

6-27

Authors: Danish, Samardashi

Different computational software’s were used for species analysis of various semi-cryogenic propellants. After analyzation the ideal and estimated values of various different parameters were calculated. Rocket Propulsion Analysis, a software developed by NASA was used for computing the ideal and estimated values as well as plotting of graphs with respect to different species. The adiabatic temperature of the species was also calculated by performing calculations on Microsoft Excel. In the end 1,1,1,2-tetraflouroethane, a semi-cryogenic propellant was used in order to draw comparison with other species such as Hydrogen, Methane, RPA-1. Graphical representation of the main variables such as pressure, temperature, density, specific heat etc. with respect to the different nozzle positions was also done. Keywords— Cryogenics, Cryogenic Engines, Cryogenic Propellants, Semi-Cryogenic Propellants, Species Analysis, RPA Analysis, Hydrogen (H2), Methane (CH4), RP1(C13H28), 1,1,1,2-Tetra Floro Ethane (CH2FCF3).

34-38

Authors: Sriranga V Deshpande1, P U Karthik2, Naveen Kumar D3, Dr Vijendra Kumar4, Dr K. S Badrinaryan5

Nowadays with a digital control it’s became more and more useful to use such a machine tools with a coded software. This paper will present the design and fabrication of 3-axis milling machine. computer numerically-controlled (CNC) machine which comprise the use of Arduino micro controller to produce pulse-width modulation (PWM) outputs in order to run the stepper motors that will be used in this work. A milling 3-axis CNC is previously used precisely surfaced designed for snapping of wood, plastic sheet and thin sheet of metal alloy by using a rotating drill bit which its accuracy is much lesser than using a lesser cutter technique this machine tool is portable and it’s controlled by computer (PC). Design and Fabrication of CNC with precision Stepper motors that contacted with the lead screw moment along 3 -axis.

46-50

Authors: Varun hegde1, Naveen Kumar D2, Dr Vijendra Kumar3, Dr K. S Badrinarayan4.

Here we are going to fabricate the automated forging machine. It’s a new innovative concept Forging is the term for shaping metal by using localized compressive forces, This machine has been mainly developed for a metal forming to required shape and size. The aim of our project is to eliminate the manual method of forging into automated forging machine to overcome the problems like inaccuracy and manual errors.

60-66

Authors: 1E.Damodar Reddy, 2Mr. J.V .Pavan Chand,

For the sake of uninterrupted power supply (UPS) to the loads, here in this paper we are using the renewable energy source (RES).Among the RES, Photovoltaic and wind energy are most familiar and hence we are using both the energy source which comes under hybrid system or integrated system. The cause of using both the system is to meet the loads demand during off set of any one of the energy source where the balancing of power takes place. In addition to this we are also using a flywheel energy place storage system which is of large capacity and of low speed. It is a connected in shunt along with a VSC-HVDC which is present at grid side circuit based on squirrel cage induction motor. The VSC-HVDC transmission is chosen for the offshore wind farms. The main property of FESS is to absorb the excess amount of energy that reaches the load and also provision of the stored energy to the grid when there is a fault (or) when there insufficient amount of energy to meet the load demand at grid. From the above discussion it is clear that FESS is accomplished for monitoring of power (or) even out through normal and fault operating conditions. The outcomes for the projected system are attained by means of Matlab /Simulink during the normal and abnormal conditions.

74-82

Authors: 1A.Sharmila Begum, 2Mr. P. Deepak Reddy,

Variable frequency voltage based control technique which includes constant- on time (COT) and fixed-off time (FOT) are well suited for wide applications which require fast transient response. In this paper the operation of fixed off -time controlled dc-dc buck converter can be studied in three switching states which includes five operating modes. Here the equivalent or effective series resistance is also taken into consideration because the value of ESR should in permissible limits. Generally the value of ESR should lie in the range of 0-1Ω. Due to improper selection of ESR value of the controlled dc-dc buck converter mode shifting criteria takes place which can be further removed by selecting the suitable ratings of load resistance, inductance values. The behavior of this controlled buck converter with a sudden change in load is also exhibited in this paper. The simulation results for different values of inductance (L), load resistance (R) and effective series resistance ESR (r) and a step change in load are depicted which are obtained using MATLAB SOFTWARE. Here we are using this FOT controlled buck converter for photovoltaic energy generation concept which includes the grid connected system. The simulation results of grid connected PV system using FOT controlled dc-dc buck converter are also shown in this paper.

94-102

Authors: B.Jyothi ,Dr. M. Uma Vani

Voltage dips are most frequent problems occurring in distribution systems. Voltage sags are expansive and are most severe power quality problem. Identification and correction of voltage dip can be done in many ways. Voltage injection by using Distributed Generation (DG) are quite useful in mitigating the voltage sags. This paper addresses correction of voltage sag with solar PV system with inverter side controls using Proportional integral(PI), Fuzzy and ANFIS under balanced and un balanced loading conditions. Usefulness of the proposed controllers is examined through simulation using MATLAB software and the results have shown the validation of the controllers used in the mitigation of voltage dips using DG schemes

111-119

Authors: G.Supriya1, K.Nagalinga Chary2

AC or DC micro grid consists of different renewable sources, converters and loads connected to the power system. These have multiple reverse connections. To overcome such problems we are going through hybrid micro grid. But power management, control over the grid, and function of the hybrid grid are further difficult than an independent ac or dc grid. A hybrid ac/dc micro grid consists of various operating modes. Each converter has its controlling technique to collect optimum power from renewable energy sources. These converters will reduce the power transformation among the networks, maintain the stable operation under different supply and demand conditions. This hybrid micro-grid is outlined to operate with renewable energy sources. And it is interconnection of large AC and LVDC networks, with a bi-directional AC/DC/AC converter. And this system has radial distribution among the networks. Here wind power and solar power are the renewable sources. In the wind power, we have a wind turbine along with DFIG, same as solar power has PV farm along with boost converter which is works on MPPT technique. The system has been simulated in Simulink. The result shows the effective operation of the grid with different sources.

127-131

Authors: Jitendra Yadav, Prakash Girewal, K.K.Shahu

In this modern world, we are well aware about the Manufacturing technologies and methodologies. Industries are to adjusting new and more and more machineries and methods but by these approaches, Sequential Work Place Layout Planning to Achieve Rapid Production Rate Abstract In this modern world, we are well aware about the Manufacturing technologies and methodologies. Industries are to adjusting new and more and more machineries and methods but by these approaches, industries are adopting this method for profit. Some of the methodologies is completely changing the world and this kind of technologies companies are adapting too quick and responsively. In this thesis, we are exploring and integrating some of the methodology such as Six Sigma approach and Sequential Operational Production Planning. For controlling this process, we are integrating sequential operational production planning to achieve rapid production rate and higher sigma level. It is alarmed with changing materials into things and services, as professionally it is possible to make maximum profit for it also contains that the management generate the maximum level of Sigma imaginable within a body.