Paper Type	::	Research Paper
Title	::	Power Quality Improvement In Matrix Converter Using Hybrid Filter
Country	::	India
Authors	::	Archana.K ||, Dr.Puttamadappa.C
Page No.	::	01-06
	::	10.9790/3021-04150106
	::	0.4/3021-04150106
		3021-0401-0506

This paper proposes a hybrid filter to minimize the power quality impact of matrix converters. Matrix converters inject significant harmonics and nonstandard frequency components into power systems. The hybrid filter is used to reduce the harmonics. A hybrid filter constructed of a shunt active filter and distributed passive filters used for power quality improvement. The proposed approach has been tested and validated on the matrix converter using Matlab/Simulink. The comparison of Simulation results for passive and active filter separately used with matrix converter with the result of matrix converter with hybrid filter is shown to demonstrate the advantages of the proposed scheme.

 

Keywords: - Current harmonics, Hybrid filter, Matrix Converter, Power quality.

[1] JenoPaul P, Ruban Deva Prakash T, Jacob Raglend I,"Adapitive PLL controller based shunt active filter for power quality improvement in Matrix converter" International Journal of Applied Engineering Research, dindigul volume 1,no 4,2011.

[2] Farhad Shahnia, Seyed Hossein Hosseini, "Power Quality Improvement of PV Power Generation Systems Using Hybrid Filter" [3] Jusus R. Vazquez, Juan L. Flores, Patricio Salmeron, Salvador P. Litran, "A hybrid approach to compensate non-linear loads in electric power system

[4] Kennedy, Barry ," Power Quality Primer" Electrical engineering Primer Series, McGraw-Hill USA,1 Mar 2000 [5] Tenti P., Malesani L., Rossetto L., "Optimum control of N –input K-output matrix converter" IEEE transaction on power electronics,7(4),pp. 707-713,1992

Paper Type	::	Research Paper
Title	::	Estimation in Censored Sample Using Linex Loss Function
Country	::	India
Authors	::	Dr Binod Kumar Singh
Page No.	::	07-12
	::	10.9790/3021-04150712
	::	0.4/3021-04150712
		3021-0401-0512

In life testing experiment, it is common practice to terminate the experiment when certain numbers of items were failed or a stipulated time has elapsed. In order to overcome these situations terminate most of the life tests before all the items fail. Pandey (1977) considered an exponential distribution which is generally used in life testing experiment. Epstein & Sobel (1953) and Bhattacharya & Srivastava (1974) have also considered the censoring procedure in life testing problem. Pandey and Malik (1994) proposed an improve estimator for variance in exponential distribution. In this paper proposes an estimator for variance in case of exponential distribution and studies its properties under Linex loss function.

 

Keywords: - Linex Loss Function, Censoring, Mean Square Error

[1] Bancroft, T.A. (1944) "On biases in estimation due to the use of preliminary test of significance.Ann.Math.Stat.15, 190-204.
[2] Bhattacharya, S.K and Srivastava, V.K. (1974) "A preliminary test procedure in life testing". Jour.Amer.Stat.Assoc. 69,726-729.
[3] Cohen A. (1965) " Estimates of linear combination of the parameters in the mean vector of a multivariate distribution."Ann.Meth.stat.36, 78-87.
[4] Epstein, B and Sobel, M (1953) " Life Testing."Jour. Amer.Stat. Assoc. 48,486-507.

[5] Han, C.P., Rao.C.V. and Ravichandran, J.(1988) " Inference based on conditional specification." A second bibliography. Comm. Stat. Theo.Meth.A176, 1-21.

Paper Type	::	Review Paper
Title	::	Comparative Study of Dc To Dc Converters Via Simpowerelectronics Fuel Cell Stack
Country	::	India
Authors	::	Sandeep Gupta ||, Swati Singh ||, Lini Mathew ||, Shimi S. L.
Page No.	::	13-21
	::	10.9790/3021-04151321
	::	0.4/3021-04151321
		3021-0401-0521

In this paper, a comparative study is done for dc to dc converters. DC to DC converters are used to change the output voltage at desired level either less or more from input voltage. These converters are very useful while connecting the dc sources like PV panel and Fuel cell stack with the load. These converters also perform the task of load matching so that maximum power can be utilized. Modeling of DC to DC converters is done using MATLAB/SimPowersystem. For simulation, 1.26 KW and 50K W PEM Fuel cell stack is taken from SimPowersystem library.

 

Keywords: - Fuel Cell, dc to dc Converter, PI Controller, MATLAB/SIMULINK

[1] A. Kirubakaran , Shailendra Jain, R.K. Nema, A review on fuel cell technologies and power electronic interface, Renewable and Sustainable Energy Reviews 13 (2009) 2430–2440.
[2] Boudghene SA, Traversa E.,Fuel cells, an alternative to standard sources of energy. Renew Sustain Energy Rev 2002; 6:297–306.
[3] Farooque M, Maru HC. Fuel cells—the clean and efficient power generators. IEEE Proc2001;89:1819–29.
[4] J.Mahdavi, A.Emadi, H.A.Toliyat, Application of State Space Averaging Method to Sliding Mode Control of PWM DC/DC Converters, IEEE Industry Applications Society October 1997.
[5] N. Mohan, T. Undeland, W. Robbins, Power Electronics Converters, Applications and Design, ISBN 9814-12-692-6.

Paper Type	::	Research Paper
Title	::	Induction of small E.M.F from A.C ripples obtained from a rectifier
Country	::	India
Authors	::	Parantap Nandi
Page No.	::	22-33
	::	10.9790/3021-04152233
	::	0.4/3021-04152233
		3021-0401-0533

A half wave rectifier utilizes only one half cycle of the A.C signal. Since the circuit can not be 100% D.C the output contains ripple. These A.C components when fed to a transformer may give an A.C voltage at the transformer output. But this voltage varies with load at the output i.e. it depends on whether the load is linear (resistor), non linear (diode), capacitive or inductive etc. Also the output voltage varies if a capacitor is connected in parallel to the resistance which is connected in series with the half wave rectifier. An incandescent lamp having a tungsten filament is used to control current. An amplifier constructed using a single transistor was also used to study the relationship between the no load voltage of the transformer and the full load voltage. At 50Hz the ripple components in a half wave rectifier are just enough to give about 6V amplified output when a 10W lamp is used to control D.C current in the circuit (later explained in the diagram). The power consumption in the circuit considering stray losses is about 15W which is fairly small.

 

Keywords: - Transformer, transistor, capacitor, rheostat.

I'd like to express my gratitude to Mr. P.B Nandi and Mrs. K.Nandi for constantly encouraging me. They have also provided financial support.

Paper Type	::	Research Paper
Title	::	Modeling and Analysis of container chassis using FEM.
Country	::	India
Authors	::	C. Madan Mohan Reddy ||, Dr M. Lakshmi Kantha Reddy
Page No.	::	34-37
	::	10.9790/3021-04153437
	::	0.4/3021-04153437
		3021-0401-0537

The present work is carried out on modeling and analysis of container chassis to improve the load carrying capacity of the chassis and reducing the failure of chassis with bending by adding stiffeners to the chassis. The stiffeners rectangular in shape to be placed in between the cross members of the chassis. The stiffeners are to be fastened to the chassis by means of bolts. The design considerations for this study are bending stress and deflection. The static loading condition was carried out for this type of design. The values compared are with the chassis with stiffener and without stiffener. The modeling is developed on proe-5 and analysis is carried out on ansys-14.

 

Keywords: - container chassis, stiffeners, analysis, comparison, proe-5, ansys 14.

[1] Patel Vijay Kumar1 V. Prof. R. I. Patel2, Structural Analysis of Automotive Chassis Frame, World Journal of Science and Technology 2(4):05-08 2012.
[2] Sairam Kotari1, V.Gopinath2, static and dynamic analysis on tetra chassis International Journal of Modern Engineering Research (IJMER) Vol.2, Issue.1
[3] Patel Vijay Kumar1 V. Prof. R. I. Patel2 Structural Analysis of Automotive Chassis Frame and Design Modification for Weight Reduction, International Journal of Engineering Research & Technology (IJERT) Vol. 1 Issue 3, May - 2012 ISSN: 2278-0181.
[4] Goolla Murali1. Subramanyam.B2 Dulam Naveen3 Design Improvement of a Truck Chassis based on Thickness, altair technology conference.

Paper Type	::	Research Paper
Title	::	Optimum Design of a Hybrid PV/Wind Energy System Using Genetic Algorithm (GA)
Country	::	India
Authors	::	Satish Kumar Ramoji ||, Bibhuti Bhusan Rath ||, D.Vijay Kumar
Page No.	::	38-48
	::	10.9790/3021-04153848
	::	0.4/3021-04153848
		3021-0401-0548

In this paper, a new approach of optimum design for a Hybrid PV/Wind energy system is presented in order to assist the designers to take into consideration both the economic and ecological aspects. When the stand alone energy system having photovoltaic panels only or wind turbine only are compared with the hybrid PV/wind energy systems, the hybrid systems are more economical and reliable according to climate changes. This paper presents an optimization technique to design the hybrid PV/wind system. The hybrid system consists of photovoltaic panels, wind turbines and storage batteries. Genetic Algorithm (GA) optimization technique is utilized to minimize the formulated objective function, i.e. total cost which includes initial costs, yearly replacement cost, yearly operating costs and maintenance costs and salvage value of the proposed hybrid system. A computer program is designed, using MATLAB code to formulate the optimization problem by computing the coefficients of the objective function. The method mentioned in this article is proved to be effective using an example of hybrid energy system. Finally, the optimal solution is received using Genetic Algorithm (GA) optimization method.

 

Keywords: - Battery, Genetic Algorithm, Hybrid PV/Wind energy system, Optimization, and wind energy

[1]. Kellogg, W.D., M.H. Nehrir, G. Venkataramanan, and V. Gerez. 1998. Generation unit sizing and cost analysis for stand-alone wind, photovoltaic, and hybrid wind/PV systems. IEEE Trans. on Energy Conversion 13(1): 70–75.

[2]. Gupta, A., R.P. Saini, and M.P. Sharma. 2007. Design of an optimal hybrid energy system model for remote rural area power generation. In Proceedings of the IEEE International Conference on Electrical Engineering (ICEE 2007), Lahore, Pakistan, 1–6.

[3]. Hongxing, Y., Z. Wei, and L. Chengzhi. 2009. Optimal design and techno-economic analysis of a hybrid solar–wind power generation system. Applied Energy 86: 163–169.

[4]. Roman, E., R. Alonso, P. Ibanez, S. Elorduizapatarietxe, and D. Goitia. 2006. Intelligent PV module for grid-connected PV systems. IEEE Transactions on Industrial Electronics 53(4):1066–1073.

[5]. Colle, S., S. Luna, and R. Ricardo. 2004. Economic evaluation and optimization of hybrid diesel/PV systems integrated to utility grids. Solar Energy 76: 295–299.

Paper Type	::	Research Paper
Title	::	Synthesis and Characterization of Silicone epoxy resin /poly (methyl methacrylate) Interpenetrating Polymer Networks
Country	::	India
Authors	::	D.Hussinaiah ||, M.Prasad ||, K.Mohanaraju ||, A.B. Samui
Page No.	::	49-60
	::	10.9790/3021-04154960
	::	0.4/3021-04154960
		3021-0401-0560

Semi interpenetrating networks (IPNs) of the Silicone epoxy resin and poly (methyl methacrylate) (PMMA) were prepared by the sequential mode of synthesis. These were characterized with respect to their mechanical properties, namely, tensile strength, elongation at break. Thermal properties were studied by differential scanning calorimetry, thermogravimetry and dynamic mechanical thermal analysis. The morphological features were studied through scanning electron microscopy(SEM). The effects of variation of the blend ratios between silicone epoxy and poly(methyl methacrylate) on the above-mentioned properties were examined. There was a gradual increase of tensile strength with consequent increases in elongation at break for both types of IPNs with increases in PMMA content up to 30% and further the above properties were decreased with increasing PMMA. The weight retentions in the thermal decomposition of both the semi-IPNs and full IPNs were higher than the silicone epoxy system. This enhancement was would be related to the presence of the unzipped methyl methacrylate monomer, which acted as radical scavengers in the silicone epoxy degradation. An inward shift and lowering (with respect to pure epoxy) of the Tg of the IPNs was observed. The fractography as studied by SEM shows change in fracture mechanics from shear yielding to crazing with increasing PMMA content.

 

Key Words: - Epoxy Resins, Silicone Epoxy Resin, Interpenetrating networks, Acrylates

[1] L.H.Sperling, Interpenetrating Polymer Networks and related Materials, Plenum, New York 1981.
[2] D.Klempner, L.H.Sperling and L.A. Utracki, eds, Interpenetrating Polymer Networks, Adv.Chem.Ser.No.239, ACS Books, Washington, DC 1994.
[3] L.H.Sperling and V.Mishra, Polymers for Advanced Technologies, 7 (1996) 197
[4] V. Mishra and L.H.Sperling, The Polymeric Materials Encyclopedia:Synthesis, Properties and Applications, CRC Press, Boca Raton 1996
[5] S M Krishnan, Prog.Org.Coat 57 (2006) 383.