INTERNATIONAL JOURNAL OF INNOVATIONS IN ENGINEERING RESEARCH AND TECHNOLOGY

6

Authors: Manoj D. Patil

In an industrial environment more number of motor load are operated through power electronic control device. As a characteristic of power electronic controller,the non linear in the load will detoriated power quality in the system which may lead to increase in power losses. With the development of power electronic controller using multilevel switching device it is possible to improve the power quality. This paper present analysis of improvement in the power supply and power quality compensation feeding to a nonlinear load in industrial environment. Exhaustive simulation research is presented to verify the performance analysis.

8

Authors: Rajendra H. Madhavi, Anwar M. Mulla, Kripasagar Bhagwat Khobre

In today’s world it has become a very important that electrical power must be made available to the customer 24 x 7. This fact attracted researchers and it increased focus on large scale integration of new renewable energy sources like wind power and solar power introduces the need for energy storage. Superconducting Magnetic Energy Storage (SMES) is a recent and promising alternative for active power compensation. Having high efficiency, very high response time and high power capability it is ideal for smoothing fast fluctuations. Superconducting Magnetic Energy Storage is a promising technology that stores electricity from the grid within the magnetic field of a coil comprised of superconducting wires with near zero loss of energy.

5

Authors: Kunal Ganpati Rajdeep

Electromechanical modelling efforts in the research field of vibration-based energy harvesting have been mostly focused on forms of vibrational input as in the typical case of harmonic excitation at resonance. However, ambient vibrational energy often has broader frequency content than a single harmonic. Piezoelectric energy harvesting is a promising technology for extracting the power from environmental vibrations. It generates the electrical power of few orders of amplitudes which is sufficient to drive several autonomous electrical devices. Such vibration-based energy harvester generates the most energy when the generator is excited at its resonance frequency. Simplest model to be started is of rectangular Aluminium cantilever beam with unimorph piezoelectric patch which is perfectly bonded to the substrate plate at the end. The resulting relative motion between the piezoelectric patch and the base produces stress on piezoelectric material, which is converted into electrical power by virtue of direct piezoelectric effect. The ability of piezoelectric material of different thickness to generate voltage at different frequency is explained in this paper. Its capability to work over a range of frequency is predicted by use of ANSYS software. The solid model is design and analyzed using finite element software.

7

Authors: Mr. T. B. Shaikh, Mr. A. B. Kolekar

In many countries, agricultural products are dried under the open sun. However, this way of drying degrades the quality of the dried products due to interference from external impurities and uneven drying rates. Numerous types of solar dryers have been designed and developed in various parts of the world, yielding varying degrees of technical performance. Basically, there are three types of solar dryers; direct solar dryers, indirect solar dryers and mixed-mode dryers. This review paper is focused on hybrid solar dryers. Drying proceeded successfully even under unfavorable weather conditions in the hybrid mode of operation these are the most cost effective type of dryers and are easy to fabricate and use. In this review paper, we reviewed different types of hybrid solar dryers and different design modifications applied to them in order to increase their effectiveness.

9

Authors: Mr. R. J. Shimpi, Prof. F. I. Shaikh

This paper presents an experimental evaluation of the effectiveness of various techniques for lossless compression of CFA images. A colour image requires at least three colour samples at each pixel location. A digital camera would need three separate sensors to completely measure the image. In a three chip colour camera, the light entering the camera is split and projected onto each spectral sensor. Each sensor requires its proper driving electronics, and the sensors have to be registered precisely. These additional requirements add a large expense to the system. Thus most commercial digital cameras use colour filterarrays to sample red, green, and blue colours according to a specificpattern. At the location of each pixel only one colour sample istaken and the values of the other colours must be interpolated usingneighbouring samples. This colour plane interpolation is knownas demosaicing.Demosaicing is generally carried out before compression.Recently, it was found that compression first schemes outperform the conventional demosaicing first schemes in terms of output image quality.An efficient prediction based lossless compression scheme for Bayer CFA images is proposed in this paper. It exploits a context matching technique to rank the neighboring pixels when predicting a pixel, an adaptive colour difference estimation scheme to remove the colour spectral redundancy when handling red and blue samples, and an adaptive code word generation technique. Simulation results show the comparison of different coding scheme in terms of compression ratio.

10

Authors: Nagendra B R,K S Ravi,Dr. G V Naveen prakash

The composites are one of the advanced engineering materials which are commonly used in this decade in day today life. The natural fibers are used for the reinforcement in order to get higher strength, reduced density, lower weight for several applications. The hybrid composite is obtained by using two or more materials with varying properties. Hybridization is a process of incorporating synthetic fiber with the natural fiber to get the better strength, stiffness, high strength to weight ratio and improvements in the mechanical properties. In this work, an attempt is made to hybridize using Glass (synthetic) fiber as well as Banana (natural) fiber with Epoxy resin as the matrix material, such that to reduce the overall use of the synthetic reinforcement and to enhance the mechanical properties. The composites are fabricated using the Hand Lay-Up method for the different weight percentages of the reinforcements. The mechanical properties are evaluated by conducting tests such as Tensile test, Flexural test, Impact test, Hardness test, Interlaminar shear strength test, Water absorption test according to the ASTM standards. The experimental results showed that the HFREC showed better mechanical properties than the BFREC and closer to the values of the GFREC.

10

Authors: Amol D. Chate , Yogesh G. Bhujbal, Dr. Asha Gaikwad

This paper deals with the design of filters and THD analysis of a low-frequency ac (20Hz) transmission system. The LFAC system is interfaced with the 50Hz main power grid with a cycloconverter. The wind power is collected in dc form, and is connected to the LFAC transmission line with a twelve pulse inverter. The waveforms at the sending end and receiving end of the transmission line are plotted.THD analysis of LFAC system is carried out. The circuit model of LFAC system is simulated in MATLAB/SIMULINK.

11

Authors: Yogesh Bhujbal, Prof. Ravindra Joshi, Amol Chate

Harmonics are the by-products of modern electronic devices i.e. nonlinear loads, this harmonics by drawing current in abrupt short pulses, rather than in a smooth sinusoidal manner. Any distribution circuit feeding nonlinear loads will contain some degree of harmonic frequencies in multiples. Due to the rapidly increasing number of non-linear loads in distribution systems, the harmonic distortion of the current and voltage increases. Examples of non-linear loads are personal computer, television set (TV), fluorescent tube with electronic ballast, compact fluorescent lamp, battery charger, uninterrupted power supply (UPS) and any other equipment powered by switched-mode power supply (SMPS) unit. As the number of harmonics-producing loads in residences has increased over the years, it has become increasingly necessary to address their effects on the distribution system. Power Quality of distribution networks is severely affected due to the flow of these generated harmonics. Harmonic currents generated by nonlinear loads can cause problems on the power system. These harmonics can cause excessive heat in many appliances, and hence reduce the life span of the distribution transformer supplying such loads, protecting equipments in power system. It can also increase power consumption and reduce system efficiency. It also lowers the system power factor. In this paper presents the results of a SIMULINK of harmonic distortion caused by different non linear home appliances and analysis of percentage total harmonic distortion which is found between ranges of 50 to greater than 200.

13

Authors: Pramod kumar N, B. Sadashive Gowda

This paper deals with the numerical analysis of a Hybrid-Type (PV/T) Solar Air Heater and a study on the effect of various design parameters that enhance the performance of the system. The heat transfer improvement in general may be achieved by increasing the heat transfer coefficient or by increasing the surface area or by increasing both. The main objective of the present work is to determine the optimum air mass flow rate at which PV/T systems are to be operated and to develop an optimal design of a hybrid type (PV/T) solar air heater that shows better performance at various heat fluxes due to solar radiation. This study determines the set of design parameters which lead to the best annual yield of the system. In this study of a hybrid type (PV/T) solar air heater ICEM CFD (ANSYS) is used to obtain the optimum results, thereby increasing the efficiency of the system.

14

Authors: Praneeth H R, Dr. B. Sadashive Gowda

This paper deals with the numerical analysis of 3d model of a cold store of dimensions 4.5 m (L) x 3.3 m (W) x 2.5 m (H), which is developed to study the effects of design parameters on flow and temperature fields within the cold store. The variation in number of inlets, position of inlets and stacking methodology affect flow and temperature fields within the cold store. Results of CFD simulation indicated the optimum position of the inlets, number of inlets and stacking methodology required to have uniform flow and temperature field within the cold store. It also proved that CFD is a convenient tool for designing and optimizing the flow field in the cold store.

6

Authors: Mr. Kedar M. Relekar 2 Mr. Ashish B. Kalase 3 Mr. Sachin Pralhad Dubal

It is well known fact that the solar water heaters are used in residential, domestics and industrial applications. More than hundred years ago, black painted water tanks were being used as simple solar water heaters. Solar water heating (SWH) technology is greatly improved during the past century. In SWH technology hot water is stored until it is needed at a later time in a mechanical room, or on the roof in the case of a thermo-siphon system. In this paper effort is made to introduce ‘Utilisability Method’ for the performance evaluation of solar water heater without storage, in detail. This method enables the calculation of monthly amount of energy delivered by hot water system, given monthly values of incident solar radiation, ambient temperature and load.

7

Authors: V. V. Potdar Umashankar Rawat

Austenitic stainless steel is one of the most important engineering materials with wide variety of applications. Superior resistance to corrosion and compatibility in high temperature and high vacuum has particularly made it an attractive choice. However, the machinability of austenitic stainless steel is not very promising owing to lower thermal conductivity, higher degree of ductility and work harden ability. Chromium, Nickel, Copper and Molybdenum gives 904L better corrosion resistance properties in sulphuric and phosphoric acid environment. It has excellent forming and welding characteristics. The present work is concentrated on dry turning of 904L. In this study the effect of cutting parameters on cutting force is studied by experimentation. A plan of experiments is done by Taguchi design of experiments to acquire data. The obtained data is validated by calculating S/N ratio and plotting a graph.

7

Authors: Milind Deshmukh 2 Anant Chipade

Auto shut off valve with double piping inlet is to be installed in disc type industrial filter, Filter is used for lime mud /pulping filtration, supply shut off is to be made with acting along auto scraper board mechanism which is installed for mud remover on multiple disc. Mechanism is to be done within limited parameters so that work and application can be effective on site. Whole project work is designed with simple and light weight mechanical links which will be proved with analysis result to carry out its behaviour under running conditions. Valve is effectively design to stop supply to the two pipes which are 3 inch in diameter. Valve will take inlet flow of ~150 LPM from each inlet. The mechanism of auto shut off valve is made for special purpose customised operation. All the linkages used are designed with proper mechanical calculations and forces study to sustain incoming pressure with its boundary conditions considerations. Main design of leak proof piston is took effort to work this valve effectively attached with collinear straight line bar mechanism with working on pneumatic double acting cylinder. Validation of valve, piston and mechanism under it will be carried out with structural analysis all the stress and deflection study is to be done to prove its capability and feasibility in the machine.

9

Authors: Mr. Ganapati Vhanamane 2 Dr. B. P. Ronge

Suspension systems, in the automotive application context, have been designed to maintain contact between a vehicle’s tires and the road, and to isolate the frame of the vehicle from road disturbances. Dampers, or so-called shock absorbers, as the undeniable heart of suspension systems, reduce the effect of a sudden bump by smoothing out the shock. In most shock absorbers, the energy is converted into heat via viscous fluid. In hydraulic cylinders, the hydraulic fluid is heated up. In air cylinders, the hot air is emitted into the atmosphere. There are several common approaches for shock absorption, including material hysteresis, dry friction, fluid friction, compression of gas, and eddy currents. Eddy currents are induced in a conductor either by the movement of the conductor in a static field or a change in the strength of the magnetic field. The generated eddy currents create electromagnets with magnetic fields that oppose the change in an external magnetic field, causing a repulsive force proportional to the relative velocity of the field and conductor. Consequently, the eddy current damping device acts like a viscous damper, causing the vibration energy of the moving mass to dissipate through resistive/Joule heating, generated in the conducting component. The use of the eddy current damping phenomenon is appealing, because the damper structure is simple and requires neither external power supply nor electronic devices; in addition, no fluid is involved in the damper, and the moving parts of the damper have no mechanical contact. Applications of the eddy current damping effect in vibration suppression studies have been reported, but, to the best of the author’s knowledge, the application of the eddy current in vehicle suspension systems has not been addressed in prior publications. Chapter 3 covers the development and feasibility study of utilizing eddy current damping effect as a potential passive damping source in vehicle suspension applications. In conventional hydraulic suspension systems, shock absorbers convert the mechanical energy of the vibration into heat energy, so this mechanical energy is dissipated (Suda et al., 1996). Segal et al. (1982) have demonstrated that roughly 200 watts of power are dissipated in an ordinary sedan traversing a poor road at 13.4 m/s; hence, suspension systems have the potential for energy regeneration. Using electromagnetic dampers (composed of electromechanical elements), the kinetic energy of vehicle body vibration can be regenerated as useful electrical energy. The electromagnetic dampers (as actuators) have the potential to be used in active suspension systems. In this paper it is proposed to prepare a model of Permanent magnetic eddy current damper. For the advantages of non-contact, mechanical friction free, lubrication free, controllable and measurable stiffness and damping properties, Permanent magnetic damper does not require extra power supply or excitation winding, so it is energy-saving, highly efficient and greater in braking density [3]. The design of a new permanent magnetic eddy current damper is proposed in this thesis, which can provide planar electromagnetic damping force on mangle positioning platform [4] and other accurate positioning systems and meet the needs of fast, accurate and stable positioning. Based on the structural design, the dissertation work suggests a model of permanent magnetic eddy current damper by using FFT analysis.

9

Authors: Mr. Kurri Rohan Ramesh 2 Prof. Jagtap Shrikant Tukaram

The paper represent the work done for making mathematical models for analysis of the effects of machining parameters on the performance characteristics in EDM process of Alloy steel (EN-31). The mathematical models are developed using the response surface methodology (RSM) to explain the influences of machining parameters on the performance characteristics in the EDM process.

10

Authors: Trishala K. Balsaraf 2 Mahesh N. Karanjkar

In current years there has been an increasing interest in the study of sparse representation of signals. Using an overcomplete glossary that contains prototype signal-atoms, signals are described by sparse linear combinations of these atoms. Recognition of persons by means of biometric description is an important technology in the society, because biometric identifiers cannot be shared and they intrinsically characterize the individual’s bodily distinctiveness. Among several biometric recognition technologies, fingerprint compression is very popular for personal identification. One more fingerprint compression algorithm based on sparse representation using K-SVD algorithm is introduced. In the algorithm, First we construct a dictionary for predefined fingerprint photocopy patches. For a new given fingerprint images, suggest its patches according to the dictionary by computing l^0-minimization by MP method and then antiquate and encode the representation.This paper compares dissimilar compression standards like JPEG,JPEG-2000,WSQ,K-SVD etc. The paper show that this is effective compared with several competing compression techniques particularly at high compression ratios.

13

Authors: A L Dhobale ,Prof H K Mishra

Present work investigates the effect of heat input (controlled by welding current, welding voltage and welding speed) on tensile strength, micro-hardness and microstructure elements produced by shielded metal arc welding (SMAW). From the experimental results it was found that the increase in heat input affects the micro-constituents of base metal, and heat affected zone (HAZ). Tensile strength decreases with increase in heat input and from scanning electron microscopy of tensile test fractured surfaces exhibited ductile & brittle failure. From micro hardness data values it was observed that hardness of material increases with increase in heat input in weld pool and decreases in HAZ zone. Optical microscopy shows that smaller dendrite sizes and lesser inter-dendritic spacing were observed in the fusion zone at low heat input. And long dendrite sizes and large inter-dendritic spacing were observed in the fusion zone of the joint welded at high heat input. Further it was observed from the optical micrographs that the extent of grain coarsening in the HAZ increases with increase in heat input. The welding heat input has a great influence on the weldments properties. This paper describes the influence of welding heat input on the weld metal toughness of high-carbon steel surface welded joint.

4

Authors: Rajalaxmi Das, Sophitorium Institute of Technology & Life skills/Jatni/ Khurda/ Odisha/India Himansu Mohan Padhy Sophitorium Institute of Technology & Life skills/Jatni/ Khurda/ Odisha/India

Abstract In the rural areas of our country, patients went to the public health centers (PHC) for their treatment. PHCs in India are allotted with hardly one doctor. It is really difficult at a single doctor’s end to provide treatment to huge number of patients approaching a single doctor. Therefore, in this work it is proposed to develop an automated diagnosis system by developing a Health KIOSK. The health KIOSK shall monitor and measure different physiological parameters of the body like heart rate, blood pressure, body- temperature, SpO2. The KIOSK comprises of signal conditioning & data acquisition systems. The parameters recorded by the KIOSK are stored in a database and can also be provided in printed output form. The patient can therefore approach the doctor with a printed data sheet about his/ her physiological parameters and also with a suggestive prescription for necessary consultation. This approach shall save the time of the doctor and the treatment process can be implemented effectively.

5

Authors: Mr. A. V. Zade Asst. Professor, Department of Computer Sci. & Engg, DESCOET, Amravati, India amolzade11@gmail.com Dr. R. M. Tugnayat Principal, SSPACE, Wardha, India

Abstract Swarm intelligence is a relatively new approach to problem solving that takes inspiration from the social behaviors of insects and of other animals. In particular, ants have inspired a number of methods and techniques among which the most studied and the most successful is the general purpose optimization technique known as ant colony optimization. The goal of this article is to introduce ant colony optimization and to survey its most notable applications. A better understanding of the theoretical properties of ACO algorithm is certainly another research direction that will be pursued in the future

7

Authors: THEJA. N,Sreenivasulu Bezawada,S Praveen Kumar

Abstract Steel tie rods are imperative load bearing capacity segments in applications where high levels of per stresses are needed. The tie rod bearing capacity has not just by the strength of the segment, but also it depends on the thread strength. Investigation of the thread strength connections and finding the best possible amount of threads engagement is crucial to make sure structural protection. In this document the results of tensile rupture experiments on mild steel IS2062 tie rods having threaded connections like Buttress, ACME and Modified square experiment setup provided by jyothi spectro analysis Hyderabad. In this experiment we test on mild steel tie rod specimens to determine ultimate load as well as deformations. The results of these experiments suggest the least number of turns of the thread engagement for prevent the breakdown of threaded mild steel tie rod in realistic applications.

8

Authors: Shalaka H. Joshi,Dr. G. M. Kakandikar

Abstract Every rewarding company has always used data and information to serve in its delineation procedure. In design a new product, engineers have always scrutinize the manufacturing and achievement history of the current product. The buyer Futures scenarios present plausible future developments, exploring the challenges and opportunities the consumer goods industry may face in 2020. We base all our scenarios on a set of certainties and uncertainties. This allows us to explore the way powerful trends may play out and interact to shape our future. Customer needs and wants are sensitive and complex. Through customer needs and competitive analysis, product development methods help to identify the critical technical components that require change. FAST diagram represents a very powerful tool in analyzing complex systems and boiling down the descriptions of the functions performed into the essence of the task that must be delivered.

9

Authors: Ms.Harshala Bhoir,Mrs.Ranjana Patil

Abstract Cloud computing can give the ability of flexibly outsourcing software for supply chain collaboration and infrastructure needs in a better way. Instead of maintaining and paying for maximum use this technology puts forward the method that provides flexibility to add on the way, depending upon the overall business process and network model of supply chain. Ahead of the usual technology publicity, the worth of cloud computing is that it can be a right technology for supporting and managing a constantly changing and dynamic network and thus for supply chain management. Because now a day these are the exact visibility and supply chain collaboration needs. Efficient supply chains are a vital necessity for many companies. Supply chain management acts on operational processes, divergent and consolidated information flows and interaction processes with a variety of business partners. Efforts of recent years are usually facing this diversity by creating and organizing central information system solutions. Taking in account all the well-known problems of these central information systems, the question arises, whether cloud-based information systems represent a better alternative to establish an IT support for supply chain management

10

Authors: Simeen. S. Mujawar,Prof. Mrs. G. M. Karve

Abstract The control strategy for the grid connected inverter (GCI) during abnormal conditions like voltage sag, swell and line to ground fault has been presented. The strategy adopted here operates even during faulty conditions, unlike the conventional controller which fails to operate during faulty conditions. The Multi-Reference Frame (MRF) PI Controller is used for this purpose. In order to study the Dynamic Performance of the system, it is simulated in Matlab Simulink environment. The overall system is simulated for normal condition that is without the presence of fault, and with the presence of fault. The performance is also studied during abnormal conditions of the grid and its results are analyzed. The simulation results exhibit improved performance of the system during normal as well as abnormal conditions.

14

Authors: Mr. G.S KIRGAT,Prof. A.N Surde

Abstract Role of optimization in engineering design is prominent one with the advent of computers. Optimization has become a part of computer aided design methodology. It is primarily being used in those design activities in which the goal is not only to achieve a feasible design, but also a design objective. The paper reviews the optimization in detail followed by the literature review and brief discussion of Hooks and Jeeves Method Analysis with an example.

15

Authors: Prof. Vyankatesh S. Kulkarni

Abstract A beam is an elongated member, usually slender, intended to resist lateral loads by bending (Cook, 1999). Structures such as antennas, helicopter rotor blades, aircraft wings, towers and high rise buildings are examples of beams. These beam-like structures are typically subjected to dynamic loads. Therefore, the vibration of beams is of particular interest to the engineer. The paper reviews the derivation by Crespo da Silva and Glyn (1978) for the nonlinear flexural-flexural-torsional vibration of a cantilever beam. Also the numerical algorithm used to solve the equation of motion for the planar vibration of the beam subjected to harmonic excitation at the base

5

Authors: Mr. Ajit Sajjan Awatade, Mr. Mayur Sudhakar Nikam

Feasibility study of Electric Bi-Cycle (Velomobiles) for students and faculties of VVPIET Engineering institute Solapur. The report is divided into the following 3 sections: 1. Present situation: This deals with the present situation of electric bicycles, bicycles usage and the economic, technological, environment and other issues involved in running them. 2. Issues involved in using of electric bicycle at college and city. 3. What are the next steps in furthering this project.

6

Authors: S.C.Rajesh,Dr. B. Sadashive Gowda,Dr. G.S.V.L

Abstract This paper deals with numerical analysis of 3D model of an SSHE is developed in order to study the fluid flow and heat transfer with a steady state laminar, non-isothermal flow of pure glycerine, which can be treated as a Newtonian fluid. The variation of the local heat transfer coefficient based on the inner wall temperature and bulk fluid temperature as a function of the main process parameters, namely, rotational Reynolds number (Rerot), axial Reynolds number (Reaxi) and number of scraper blades (2, 3 and 4), is obtained. The results have shown that viscous dissipation has a significant effect on the cooling of glycerine. The local heat transfer coefficient increases slightly when increasing the number of scraper blades. Larger increases of the same occurred with higher rotational Reynolds number and axial Reynolds number. A correlation of the average Nusselt number is obtained in terms of the rotational and axial Reynolds numbers. This is expected to be useful in the design of SSHEs handling highly viscous fluids.

6

Authors: Mr. Pratish Vishwas Dalvi,Mr. Anand Rachappa Ashtagi

Abstract The basic function of a human powered series hybrid (SH) drive is the same as that of today's electric bicycle drives, which are parallel hybrids (PH). A SH drive is more versatile for the same cost. There are no mechanical transmission elements so that maintenance is simplified. The paper reviews the technology in brief and this technology is being utilized by our project group which is intended to make a series hybrid vehicle as a final year project.

6

Authors: Prof. Prasad Bapat,Prof. J.Y. Acharya

ABSTRACT Special purpose machine tools are designed and manufactured for specific jobs and such never produced in bulk such machines are finding increasing use in industries the techniques for designing such machine would obviously be quite different from those used for mass produced machine. A very keen judgment is essential for success of such machines. This paper explains a case study of designing special purpose machine and manufactured at ABC Company which found beneficial in increasing production quantity & reducing manpower.

6

Authors: Prof. Mohasin S. Bijali,Prof. Aniket C. Daiv,Mr. Omkar S. Dalvi

Abstract Motion control plays a vital role in industrial automation. Manufacturing plant in industries like chemical, pharmaceutical, plastic and textile, all require motion control. And it may be a flat belt application, flow-control application or mixing of substances. Different types of motors—AC, PMDC, servo or stepper—are used depending upon the application. Of these, PMDC motors are widely used because controlling of a PMDC motor is somewhat easier than other kinds of motors. The treadmills are the walking machines used for exercise. This is a big application where a PMDC motor plays an important role in its operation .These machines are operated using PMDC motors. In this paper, Implementation of the PIC 16F877A microcontroller for speed control of PMDC motor fed by a MOSFET has been investigated. The MOSFET is driven by high frequency PWM signal. Controlling the PWM duty cycle is equivalent to controlling the motor terminal voltage, which in turn directly adjusts the motor speed

8

Authors: Prof. Mukund S. Mahagaonkar,Prof. Shoaib M.Tamboli,Prof. Gaurav A. Bongale

ABSTRACT In this paper zero voltage switching converters are investigated. The investigation starts by discussing the RCD charge-discharge snubber. The concept of resonant and quasi-resonant DC link converters is discussed. One of the most promising quasi-resonant DC links reported in the literature is implemented and tested in a battery charger application. Simulated resonant link voltage and current waveforms are analyzed. IGBT switching waveforms under zero voltage conditions are investigated. Measured waveforms are shown and the converter and the overall battery charger efficiency are measured

8

Authors: Manish Chaware,N. K. Singh

Abstract In this case study I tried to understand various stages of power transmission from Chandrapur generating power plant to Padaghe receiving station including need of HVDC line in place of EHVAC in Chandrapur- Padaghe line, its commissioning, erection, financing, various problems faced by MSEB engineers during commissioning of line and during operations. This case study also contains few critical issues and faults on line and frequently occurring fault also. During this case study I have suggested some corrective actions to MSEB engineers of Padaghe station to improve reliability of plant and prevent frequently occurred fault in plant and on line.

9

Authors: Mr. Chetan Chirmurkar,Prof. Mr. A. P. Deshmukh

Abstract: For a reliable design of bolted joints, it is necessary to evaluate the actual fraction of the external load transmitted through the bolt. The stiffness of the bolt and the member of the joint decide the fractions of external load shared by the bolt and the member. Bolt stiffness can be evaluated simply by assuming the load flow to be uniform across the thickness and the deformation is homogeneous. Then, bolt may be modeled as a tension member and the stiffness can be easily evaluated. But, the evaluation of the member stiffness is difficult because of the heterogeneous deformation. In the present work, joint materials are assumed to be isotropic and homogeneous, and linear elastic axisymmetric finite element analysis was performed to evaluate the member stiffness. Uniform displacement and uniform pressure assumptions are employed in idealizing the boundary conditions. Wide ranges of bolt sizes, joint thicknesses, and material properties are considered in the analysis to evaluate characteristic behavior of member stiffness. Empirical formulas for the member stiffness evaluation are proposed using dimensionless parameters. The results obtained are compared with the results available in the literature.

9

Authors: Manish Chaware,N. K. Singh

Abstract: The power sector is one of the most important infrastructural aspects of the Indian economy. But of late, it has been facing some serious problems such as old worn-out and poor distribution network leading to frequent outages, skewed tariff structure, huge Transmission & Distribution (T&D) losses largely due to outright theft & unmetered supply, high LT/HT line ratio, overloaded DT/ Lines, lack of accountability at feeder level and in distribution setup of State Electricity Boards (SEBs). Hence, the Government identified Distribution Reforms as the key area to bring about the efficiency & commercial availability into the power sector. The Government took various initiatives in this direction; one of these is the introduction of Accelerated Power Development Programme (APDP) in February, 2000. The main objective of this programme was to initiate a financial turnaround in the performance of the State owned power sector.

10

Authors: Adikesavulu.R,Sreenivasulu. Bathina,Sreenivasulu. Bezwada

Abstract Drilling is the fundamental operation of making a cylindrical hole in metal cutting industry. Thrust force and torque has a major parameter which influence on the tool life and machining economics. If thrust force and torque increases tool life will be decreases, it is necessary to drill a hole at optimum thrust force and torque as it is not possible to cut a hole at zero thrust force and torque. The objective of the present work is to optimize process parameters to be specific cutting speed, feed, and point angle of cutting edge in drilling of EN31 steels. Experimentation were completed according to the Taguchi trial outline and L27 orthogonal array be utilized to study the control of different combinations of process parameter on the hole quality. Analysis of variance (ANOVA) statistical method is also used to determine the importance of every process parameter on drilling

10

Authors: Prof. M.A.Khot,Prof. T.B.Shaikh,Prof. P.C. Dagade

ABSTRACT In many industrial applications it is required to drive the actuators, hydraulic cylinder or hydraulic motors at variable speed this is only possible by variable discharge from a variable displacement pump (which has high cost approx Rs. 90000/-) so it is not feasible to use it. One method employed is to use a pump of higher discharge capacity, but higher capacity means higher cost and higher power consumption hence there is need of special pump system at low cost so that the requirement of variable discharge is met easily without much cost and set up. This paper deals with the design of such pump systems and its calculations

12

Authors: N.Prabhakar,B. Sreenivasulu,U.Nagaraju

Abstract: In the present study, the influence of machining parameters on surface roughness and material removal rate is examined by utilizing ANN& ANOVA techniques. Three important variables i.e. spindle velocity, depth of cut and feed rate which are influence on the surface roughness and material removal rate are examined and also analyzed. Artificial Neural Network and Analysis of variance techniques are effective tools for analyze and optimize the cutting parameters. Based on taguchi, design of experiments, L27 orthogonal array was selected for conducting turning experiments. 3 factors are considered at 3 levels for orthogonal array L27 design. The experimentation has been conducted on Aluminum alloy AL 6253 using CNC turner with carbide tip tool and experimental results are taken for preparing of the ANN model. The experimental results were analyzed by using ANOVA and the regression equation for predicting the surface roughness and MRR. Keywords: Surface Roughness, Material removal rate, ANN (Artificial Neural Network), ANOVA Analysis of variance and Regression modeling.