E-ISSN 0976-7916
  Journal of Engineering  Research and Studies
                                                            -An Open Access Peer Reviewed e-Journal

 
 

Authors: Dheepak Mohanraj, Suresh Mahalingam, N.Murugan

JERS/ Volume IV/ Issue II/ April-June.2013/01-04

ABSTRACT
This paper deals with the development of design, modelling and simulation of closed loop control of simulation model and characteristics behaviour of the efficient z-source inverter for power drives. These are simulated through computer software tool using MATLAB/SIMULINK VERSION 7.9. This project presents the development of design, modelling and simulation for maintaining voltage and rated speed of the motor. Traditionally there are two inverters namely Voltage Source Inverter and Current Source Inverter. Each inverter has six switches in the main circuit. These switches are power switches with anti-parallel diodes. These diodes provide bi-directional current flow and voltage blocking capability. The proposed method presents a latest technique in motor drive operation called simulation model and characteristics behaviour of the efficient z-source inverter for power drives which comes under such category of stabilizing the output voltage of an AC Motor. Impedance Source Inverter can be applied to the entire spectrum of power conversion.

ANALYSIS OF INTERDEPENDENCE AMONG THE ENABLERS OF GREEN CONCEPT IMPLEMENTATION IN INDIAN AUTOMOBILE SUPPLY CHAIN

Authors: Kumar Sandeep, Kumar Sanjay, Gahlot Pardeep, Haleem Abid

JERS/ Volume IV/ Issue II/ April-June.2013/05-11

ABSTRACT
Environmental conciseness has drawn growing attention from government officials, entrepreneurs, managers and customers. Management of greening the automobile supply chain in Indian context has been observed as an important research area. Fifteen important enablers to implement green concept in Indian automobile supply chain have been identified after reviewing the literature and substituent discussions with the supply chain managers from Indian automobile industry. Interactions among these enablers have been found important to be considered for formulation of structural model. Interpretive Structural Modeling has been identified as an appropriate technique to develop the structural model. ‘Relative advantage’ has been identified as top level enabler and ‘Government support and regulations’ as bottom level enabler in the model. Seven enablers have been identified as driver enablers; seven enablers as dependence enablers; one enabler as linkage enabler whereas no enabler has been identified as autonomous enabler. The present research work may help the practicing managers to understand the inter dependence of these supporting strategies framing process to manage green concept implementation in supply chain.

DESIGN AND FABRICATION OF GRAVITY ASSISTED FREE ENERGY PUMP

Authors: S N Waghmare*, M S Prabhavalkar

JERS/ Volume IV/ Issue II/ April-June.2013/12-15

ABSTRACT
Earlier pumps which are run on the electricity, that are not used in places where electricity is not available. Also they have high cost and high maintenance cost. Operating cost of such pumps is also high. This paper presents a new method to develop gravity assisted free energy pump by using two springs and two masses system, which runs without electricity. Gravity assisted free energy pump system is an innovative method that utilizes the concept of Free undamped vibrations in two mass- two spring system. The gravity assisted free energy pump is operate manually and should have low initial and operating cost.