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28,451 Article Results

Design and Implementation of Three Phase Reversing Voltage Multilevel Inverter

10.11591/ijape.v5.i2.pp59-71
G. Vijaykrishna , Y. Kusumalatha
This paper examines how a Reversing voltage multilevel inverter (RVMLI) strategy is enforced to develop multilevel inverter fulfilment. This approach has been used SPWM-PD technique to regulate the electrical inverter. It desires numerous less range of carrier signals to deliver gate pulses of switches. Increasing within the levels during this strategy aid in reduction of output voltage harmonics expeditiously and improves power quality at output of the electrical inverter. It wants a lowered quantity of total switches, which is in a position to decreases of switching losses in this process. The Three-phase reversing voltage multilevel inverter of 7- level and 9- level is accomplished for R-load and R-L load and Three Phase Induction Motor. A reversing voltage multilevel inverter of 7- level and 9- level simulation is intended and developed. Mat lab/Simulink outcome is awarded to validate the proposed scheme.
Volume: 5
Issue: 2
Page: 59-71
Publish at: 2016-08-01

An Optimizing Approach for Multi Constraints Reassignment Problem of Human Resources

10.11591/ijece.v6i4.pp1907-1919
Tkatek Said , Abdoun Otman , Abouchabaka Jaafar , Rafalia Najat
This paper presents an effective approach to optimize the reassignment of Human Resources in the enterprise that is formed by several units of productions to take into consideration the human characteristics. This approach consists of two steps; the first step is to formalize the studied problem that is practically take the form of the generalized assignment problem (GAP) known as NP-hard problem. Additionally, the variables in the formulation of our problem are interlinked by certain constraints. These two proprieties can to justify the important complexity of this problem. The second step is focused to solve this complex problem by using the genetic algorithm. We present the experimentally result for justifying the validity of the proposed approach. So, the solution obtained allowed us to get an optimal assignment of personnel that can lead to improve the average productivity or ratability or at least ensure its equilibration within sites of enterprise.
Volume: 6
Issue: 4
Page: 1907-1919
Publish at: 2016-08-01

Analysis of Selected Earth-Space Rain Attenuation Models for a Tropical Station

10.11591/ijeecs.v3.i2.pp383-391
A. I. O. Yussuff
The restrained use of millimeter bands is due to severe rain attenuation. Attenuation is caused when rain cells intersects radio wave’s propagation path; resulting in deep fades. The effect of rainfall is more severe in tropical regions characterized by heavy rainfall intensity and large raindrops; hence, rain attenuation analyses are essential to study rain fade characteristics for use in earth-space link budget analysis, for outage prediction resulting from rain attenuation. Tropical regions are particularly challenged with signal outage, necessitating the formulation and development of suitable prediction model(s) for the region. Therefore, extensive knowledge of the propagation phenomena mitigating system availability and signal quality in these bands are required. Daily rainfall data were collected from the Nigerian Meteorological Services for Lagos for spanning January to December 2010. Results showed that although, the ITU-R model out-performed the other prediction models under consideration, none of prediction models matched the measurement data.
Volume: 3
Issue: 2
Page: 383-391
Publish at: 2016-08-01

Single Phase PV Inverter Applying a Dual Boost Technology

10.11591/ijape.v5.i2.pp95-102
Sudha Bhutada , S.R. Nigam
In this paper, a single-phase PV inverter applying a dual boost converter circuit inverter is proposed for photovoltaic (PV) generation system and PV grid connected system. This system is designed to improve integration of a Single phase inverter with Photovoltaic panel. The DC 24V is converted into to 86V DC and then 86V DC to 312V DC. The 312 V DC is then successfully inverted to AC 220V. Hence solar energy is powerfully converted into electrical energy for fulfilling the necessities of the home load, or to link with the grid. Matlab Simulation software was used for simulation of the circuit and outcome is presented in this paper.
Volume: 5
Issue: 2
Page: 95-102
Publish at: 2016-08-01

Role of Solar Power in Sustainable Development of India

10.11591/ijape.v5.i2.pp103-110
Moumita Sadhu , Suprava Chakraborty , Niladri Das , Pradip Kumar Sadhu
Bulk group of rural households, dependency on insufficient and poor quality energy sources are the features of Indian energy consumption pattern. Sustainability is the move towards the growth and development of India. Solar Energy is one of the renowned sectors to support the sustainability of India. Solar energy has giant potential in India due to its position in tropical belt. This paper deals with the new innovative applications of solar energy for sustainable development of India. Solar application in transportation, architecture, car parking, restaurants, lighting, mobile charging etc are described for sustainable development. The paper includes the existing applications of solar energy, the current status of solar energy in India, challenges in the progress of solar energy and concludes with some solutions to promote solar energy.
Volume: 5
Issue: 2
Page: 103-110
Publish at: 2016-08-01

Design and Fabrication of Rectifying Antenna Circuit for Wireless Power Transmission System Operating At ISM Band

10.11591/ijece.v6i4.pp1522-1528
Chuc Huu Doan , Duong Gia Bach
This paper introduces an overview of a rectifying antenna (rectenna) circuit topology for microwave power transmission system. Specially, a rectenna based on a microstrip patch antenna and a microwave double voltage rectifier at 2.45GHz were designed and fabricated.  The antenna’s return loss is achieved of -15 dB at 2.45GHz. The microwave to DC conversion efficiency of the rectenna was measured as 71.5% with 22 dBm input power and 810 Ohm load. The design  and simulated results  were  carried out  by  the  microwave engineering professional  design software,  known as ADS2009 package. All design and simulation results will be reported.
Volume: 6
Issue: 4
Page: 1522-1528
Publish at: 2016-08-01

New Decimation-In-Time Fast Hartley Transform Algorithm

10.11591/ijece.v6i4.pp1654-1661
Mounir Taha Hamood
This paper presents a new algorithm for fast calculation of the discrete Hartley transform (DHT) based on decimation-in-time (DIT) approach. The proposed radix-2^2 fast Hartley transform (FHT) DIT algorithm has a regular butterfly structure that provides flexibility of different powers-of-two transform lengths, substantially reducing the arithmetic complexity with simple bit reversing for ordering the output sequence. The algorithm is developed through the three-dimensional linear index map and by integrating two stages of the signal flow graph together into a single butterfly. The algorithm is implemented and its computational complexity has been analysed and compared with the existing FHT algorithms, showing that it is significantly reduce the structural complexity with a better indexing scheme that is suitable for efficient implementation.
Volume: 6
Issue: 4
Page: 1654-1661
Publish at: 2016-08-01

Hybrid Photovoltaic and Wind Power System with Battery Management System Using Fuzzy Logic Controller

10.11591/ijape.v5.i2.pp72-78
M. Venkateshkumar , R. Raghavan
In recent year, the development of hybrid renewable energy sources has the important role of power generation. This paper focused on  design of hybrid PV / Wind power system and its battery management system. The fuzzy logic control based battery management system has been designed for effective power utilization. The proposed control to operate the battery charging and discharging mode during non-linear power generation. The battery will charge whenever the renewable energy power is greater than to consumer load power as well as the battery will discharge whenever the renewable energy power is lesser than to consumer load power. The proposed model will be simulated using Matlab environment and analysis the proposed system results. Finally, simulation results are evaluated and validating the effectiveness of the proposed controller.
Volume: 5
Issue: 2
Page: 72-78
Publish at: 2016-08-01

A Novel Loom for Alacrity of Protected Lawsuit dealings using Cloud Computing Environment

10.11591/ijece.v6i4.pp1792-1799
B.V. Subba Rao , J. Rajendra Prasad , D. Kavitha , J. Sirisha , K. Swaroopa Rani
This paper suggest a well-organized information system for facilitate the litigation procedures Information System courts. The purpose is to decrease the duration of processing cases in courts. The aspiration is to save the time and effort of judges and lawyer. In addition, we make use of the advantages of electronic systems and reducing traffic especially in developed countries. Advanced Encryption Standard is used to encrypt all the manipulated data for each case. All read document are encrypted to attain secure information system Litigation process. This is because the big data for all cases will be stored on cloud environment.
Volume: 6
Issue: 4
Page: 1792-1799
Publish at: 2016-08-01

Comparative Study on the AC Brekadown Voltage of Palm Fatty Acid Ester Insulation Oils Mixed With Iron Oxide Nanoparticles

10.11591/ijece.v6i4.pp1481-1488
Mohd Safwan Mohamad , Hidayat Zainuddin , Sharin Ab Ghani , Imran Sutan Chairul
Mineral oils are are derived from petroleum which is a non-renewable and non-sustainable source, and therefore there is a critical need to develop alternative insulation oils for use in transformers.  Ester oils offer a number of benefits over mineral oils such as good biodegradability, high cooling stability, good oxidation stability and excellent insulation performance. Nowadays, nanotechnology has become one of the most important research fields in both the academia and industry and it has been shown in previous studies that nanoscale materials are beneficial for transformers. In this regard, the objective of this study is to compare the AC breakdown voltage of palm fatty acid ester (PFAE) oils mixed with iron oxide (Fe3O4) nanoparticles. The PFAE-based nanofluids are prepared using two methods: (1) Method I (weight-based method whereby the concentration of the Fe3O4 nanoparticles is 0.01 g/l) and (2) Method II (volume-fraction method whereby the concentration of the Fe3O4 nanoparticles is 0.01, 0.02 and 0.03%). The AC breakdown voltage test is conducted on the PFAE-based nanofluids in accordance with the ASTM D1816 standard test method. Weibull statistical analysis is carried out to analyse the AC breakdown voltage of fresh PFAE oil and PFAE-based nanofluids. It is found that there is enhancement of the AC breakdown voltage for all PFAE-based nanofluids with the exception of with the exception of one sample prepared using Method II (0.01% Fe3O4 nanoparticles).
Volume: 6
Issue: 4
Page: 1481-1488
Publish at: 2016-08-01

Face Recognition with Modular Two Dimensional PCA under Uncontrolled Illumination Variations

10.11591/ijece.v6i4.pp1610-1616
Venkatramaphanikumar S , K. V. Krishna Kishore
Person authenticaton using faces became one of the most popular security approaches for the last three decades.  From the literature it is found that perofrmance of most of the methods used in recognition was limited due to uncontrolled conditions like illumination and pose variations.  In this work, to address the limitations of uncontrolled environment, Modular two-dimensional Principle Component Analysis (M2D-PCA) is proposed.  In this approach, the input image is partitioned into four equal segments and then Histogram Equalization is applied to reduce illumination impact caused due to varying lightening conditions. Then M2D-PCA algorithm is applied parallel on each segment and then all features extracted from the segments are fused with wieghted summation. Experiments are carried out on bench mark datasets like extended Yale database B, ORL and AR database.   Results of the proposed approach produced good recognition rate with low computational time against various illumination environments.
Volume: 6
Issue: 4
Page: 1610-1616
Publish at: 2016-08-01

Parasitic Strip Loaded Dual Band Notch Circular Monopole Antenna with Defected Ground Structure

10.11591/ijece.v6i4.pp1742-1750
P Syam Sundar , Sarat K Kotamraju , B T P Madhav , M Sreehari , K Raghavendra Rao , L Prathyusha , Y Pravallika
In this article a parasitic strip loaded monopole antennas are designed to notch dual and triple bands. The designed models are constructed on one side of the substrate material and on the other end defected ground structures are implemented. The basic antenna comprises a tuning stub and a ground plane with tapered shape slot as DGS. Another model is constructed with circular monopole radiating element on front side and similar kind of ground structure used in the basic rectangular tuning stub antenna. To create notched bands with tuning stubs, two symmetrical parasitic slits are placed inside the slot of the ground plane. The basic model is of the rectangular stub notching triple band and the circular tuning stub antenna notching dual band. Dual band notched circular tuning stub antenna is prototyped on FR4 substrate and measured results from vector network analyzer are compared with simulation results of HFSS for validation.
Volume: 6
Issue: 4
Page: 1742-1750
Publish at: 2016-08-01

Evaluation of Power Quality Issues in grid Connected PV Systems

10.11591/ijece.v6i4.pp1412-1420
Gunjan Varshney , D S Chauhan , M P Dave
This paper deals with the evaluation of power quality issues in grid connected PV systems. This paper also presents  complete simulation, modeling and control of three phase grid connected solar PV module with Maximum Power Point Tracking. Perturb and Observe (P&O) method has been used for Maximum Power Point Tracking. In the proposed model DC bus voltage control , harmonic mitigation and power factor control are discussed as power quality issues. The simulation results are shown in the graphical waveforms and simulation is performed in MATLAB using SIMULINK environment and PSB toolboxes.  
Volume: 6
Issue: 4
Page: 1412-1420
Publish at: 2016-08-01

Building Fault Tollrence within Clouds at Network Level

10.11591/ijece.v6i4.pp1560-1569
Sastry Kodanda Rama Jammalamadaka , Kamesh Bala Krishna Duvvuri , Devi Anusha CH , Padmini P , Siva Anjaneyulu G
Cloud computing technologies and infrastructure facilities are coming up in a big way making it cost effective for the users to implement their IT based solutions to run business in most cost-effective and economical way. Many intricate issues however, have cropped-up which must be addressed to be able to use clouds the purpose for which they are designed and implemented. Among all, fault tolerance and securing the data stored on the clouds takes most of the importance. Continuous availability of the services is dependent on many factors. Faults bound to happen within a network, software, and platform or within the infrastructure which are all used for establishing the cloud. The network that connects various servers, devices, peripherals etc., have to be fault tolerant to start-with so that intended and un-interrupted services to the user can be made available. A novel network design method that leads to achieve high availability of the network and thereby the cloud itself has been presented in this paper
Volume: 6
Issue: 4
Page: 1560-1569
Publish at: 2016-08-01

Critical Analysis of Data Forwarding Routing Protocols Based on Single path for UWSN

10.11591/ijece.v6i4.pp1695-1701
Mukhtiar Ahmed , Mazleena Salleh , Mohammad Ibrahim Channa
In Underwater Wireless Sensor Network (UWSN); the sensor node is responsible to extract the valuable application based information from underwater environment. The application based information covers the applications like: tactical surveillance, assisted navigation, disaster prevention, offshore exploration, pollution monitoring and oceanographic data collection. The design of routing protocol in underwater environment is one of the challenging issues for researchers. This research article focuses the designing issues of the data forwarding routing protocols based on single path. In this article the designing of 2D and 3D architecture of routing protocols are discussed with their different issues. This article also focuses the analytical approach of proposed routing protocols with different parameters, the simulation scenarios of the single path routing protocols with critical analysis; and the open research issues; will help the researchers to further research in the field of routing protocols for UWSN.
Volume: 6
Issue: 4
Page: 1695-1701
Publish at: 2016-08-01
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