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31,456 Article Results

A fuzzy logic controller based brushless DC motor using PFC cuk converter

10.11591/ijpeds.v10.i4.pp1894-1905
Sanatan Kumar , Debanjan Roy , Madhu Singh
This paper presents a PFC (Power Factor Correction) Cuk converter fed BLDC (Brushless DC) motor drive and the speed of BLDC motor is controlled using fuzzy logic implementation. The PFC converters are employed to enhance the power quality. The Brushless DC motor speed is under the control of DC-bus voltage of VSI-Voltage Source Inverter in which switching of low frequency is used. This helps in the electronic commutation of BLDC motors thus decreasing the switching losses in VSI. A DBR (Diode Bridge Rectifier) next to the PFC Cuk converter controls the voltage at DC link maintaining unity power factor. The characteristics of Cuk converter in four dissimilar modes of operation are studied such as continuous and discontinuous conduction modes (CCM and DCM) respectively. The entire system is simulated using Matlab/Simulink software and the simulation results are reported to verify the performance investigation of the proposed system.
Volume: 10
Issue: 4
Page: 1894-1905
Publish at: 2019-12-01

Intelligent credit scoring system using knowledge management

10.11591/ijai.v8.i4.pp391-398
Bazzi Mehdi , Chamlal Hasna , El Kharroubi Ahmed , Ouaderhman Tayeb
Promoting entrepreneurship among Moroccan young people has been challenged by a plethora of economic and social problems in the aftermath of the Arab Spring. Several government programs have been set up for young entrepreneurs. Thus, faced with the large number of credit applications solicited by these young entrepreneurs, banks resorted to artificial intelligence techniques. In this respect, this article aims at proposing a decision-making system enabling the bank to automate its credit granting process. It is a tool that allows the bank, in the first instance, to select promising projects through a scoring approach adapted to this segment of entrepreneurs. In the second step, the tool allows the setting of the maximum credit amount to be allocated to the selected project. Finally, based on the knowledge of the bank’s experts, the tool proposes a breakdown of the amount granted by the bank into several products adapted to the needs of the entrepreneur.
Volume: 8
Issue: 4
Page: 391-398
Publish at: 2019-12-01

Calculate the optimum slot area of elliptical microstrip antenna for mobile application

10.11591/ijeecs.v16.i3.pp1364-1370
Raad H. Thaher , ِAli Khalid Jassim
Designing and analysis the antenna parameter, for the calculation optimum the slot area for a new broadband elliptical antenna for mobile application, to enhancement impedance bandwidth. Two equations have been obtained, representing the first relationship between the area of the slot and the area of the patch, and the second represents the area of the slot to the wavelength of the band frequency. The antenna was implemented and gets simulation result using CST software and manufacturing on an FR-4 material with =4.3, tan (δ) =0.002 and the feeding line has a characteristic impedance of 50Ω. The proposed antenna is operating in the bandwidth 24GHz and the gain (6.8) dBi.
Volume: 16
Issue: 3
Page: 1364-1370
Publish at: 2019-12-01

Design and implementation a security system for bank using voice recognition

10.11591/ijpeds.v10.i4.pp2126-2129
Mohammed Hasan Ali , Qasim mohamed Al Azze
In this work, a new security system design is demonstrated based on the sound signal for bank protection. Voice Acknowledgment Module is placed on the gate of the safe. Voice Acknowledgment Module is set to perceive the capable client as indicated by his sound recurrence reaction. The plan could program to permit tow clients for greater adaptability the card location strategy is executed utilizing individual data information to permit other client in the framework. A delicate camera is accustomed to observing the developments in the structure and for the reasons for wellbeing and security. All these sensors are controlled by arduino.
Volume: 10
Issue: 4
Page: 2126-2129
Publish at: 2019-12-01

Research on hybrid SHEPWM based on different switching patterns

10.11591/ijpeds.v10.i4.pp1875-1884
Tao Jing , Alexander Maklakov , Andrey Radionov , Sergei Baskov , Aleksandra Kulmukhametova
This paper presents a hybrid pulse width modulation (HPWM) strategy based on different switching patterns of selective harmonic elimination pulse width modulation (SHEPWM) for the three-level neutral point clamped (3L-NPC) converter. Specific low-order harmonics can be eliminated by SHEPWM at low switching frequency, while the remaining high-order harmonics can be selected to be simply filtered by additional hardware. Large oscillation waveform usually occurs in the transition instant between two diverse modulation situations, therefore switching between distinct switching patterns can be problematic if no effective means is taken, especially when the effect of smooth and fast transition at any time is considerable. A universal and valid control strategy, which maintains the high-quality output voltage and current, is proposed and implemented in this paper to address this issue. Simulation results obtained from MATLAB/SIMULINK are presented to analyze the performance and validate the feasibility and effectiveness of this control scheme.
Volume: 10
Issue: 4
Page: 1875-1884
Publish at: 2019-12-01

A model for predicting photovoltaic module performances

10.11591/ijpeds.v10.i4.pp1914-1922
Nadia Bouaziz , Arezki Benfdila , Ahcene Lakhlef
The present paper deals with the development of a simulation model for predicting the performances of a solar photovoltaic (PV) system operating under current meteorological conditions at the site location. The proposed model is based on the cell equivalent circuit including a photocurrent source, a diode, a series and shunt resistances. Mathematical expressions developed for modeling the PV generator performances are based on current-voltage characteristic of the considered modules. The developed model allows the prediction of PV cell (module) behavior under different physical and environmental parameters. The model can be extended to extract physical parameters for a given solar PV module as a function of temperature and solar irradiation. A typical 260 W solar panel developed by LG Company was used for model evaluation using Newton-Raphson approach under MATLAB environment in order to analyze its behavior under actual operating conditions. Comparison of our results with data taken from the manufacturer’s datasheet shows good agreement and confirms the validity of our model. Hence, the proposed approach can be an alternative to extract different parameters of any PV module to study and predict its performances.
Volume: 10
Issue: 4
Page: 1914-1922
Publish at: 2019-12-01

The non-technical skills needed by graduates of technical colleges in metalwork technology

10.11591/ijere.v8i4.20308
Bakare Shola. F , Azlan Abdul Latib , Rosmah Samari , Yusri Kamin , Muhammad Sukri Saud , Nor Fadila Amin
This studycentered on the views of the professionals about the non-technical skills considered crucial as recruitment prerequisite among graduates of metalwork technology from technical and vocational institutions in Nigeria. It will also examine the possibility of integrating these skills into the curriculum. The study made use of the survey research design. One research question guided the study. The population for the study comprised metalwork technology professionals in Ogun State, Southwestern Nigeria. A 36-item questionnaire was the instrument used for data collection. The instrument was validated by experts from the University of Lagos (UNILAG). The reliability of the instrument was determined using Cronbach Alpha and the reliability index which stood at 0.79. The data collected were analysed using mean statistic and standard deviation. The study revealed that professionals placed great importance on communication skills, problem-solving skills, teamwork skills and self-management qualities among others, as important recruitment prerequisite among graduates of metalwork technology from technical and vocational institutions in Nigeria. The study concludes with the suggestions that non-technical skills should be integrated into the curriculum particularly in the field of metalwork technology in technical colleges. Students should be familiar with the employers’ recruitment criteria while they are still in schools in order to equip them with the necessary skills needed for employment. 
Volume: 8
Issue: 4
Page: 654-658
Publish at: 2019-12-01

Mitigation of power quality problems using series active filter in a microgrid system

10.11591/ijpeds.v10.i4.pp2245-2253
Awais Farooqi , Muhammad Murtadha Othman , Ahmad Farid Abidin , Shahril Irwan Sulaiman , Mohd Amran Mohd Radzi
Dynamic voltage restorer (DVR) is a series active filter device that is used to protect sensitive loads from power quality issues such as voltage sag, swell, harmonics or disturbances. This implies that the DVR is capable to mitigate power quality disturbances at load terminal. Harmonic is a major power quality problem polluting distribution network causing the end-user equipment to fail operating due to the occurrence of disturbances in voltage, current or frequency. This paper discusses on the DVR used as the proposed technique to mitigate the voltage sag and swell in a distribution network connected with energy storage system and mini-hydro turbine system.
Volume: 10
Issue: 4
Page: 2245-2253
Publish at: 2019-12-01

Power loss reduction by arctic wolf optimization algorithm

10.11591/ijict.v8i3.pp111-116
Kanagasabai Lenin
This paper proposes Arctic Wolf optimization (AWO) algorithm to solve the optimal reactive power problem. Deeds of the Arctic wolf have been imitated to formulate the proposed algorithm. Arctic wolf also identified as the white wolf or polar wolf is a breed of gray wolf inhabitant from Melville Island to Ellesmere Island. It is average size, very smaller when compared to north western wolf, it possess whiter coloration, narrower braincase and big carnassials. Particle swarm optimization, Genetic algorithm has been used to improve the Exploration & Exploitation ability of the algorithm by utilizes flag vector & position, velocity update properties. Proposed Arctic Wolf optimization (AWO) algorithm has been tested in standard IEEE 30 bus test system and simulation results show the projected algorithms reduced the real power loss considerably.
Volume: 8
Issue: 3
Page: 111-116
Publish at: 2019-12-01

Effect of errors on miss distance of missile trackers in active decoy environment

10.11591/ijece.v9i6.pp4696-4702
Edury Vijaya lakshmi , N. N. Sastry , B. Prabhakar Rao
Lock on missiles are a major threat to vital installations. Soft kill solutions against lock on incoming missiles such as deployment of active decoys can be very effective to war of threat. The weaknesses in onboard missile tracking radars can be gainfully used to increase the miss distance between target and the missile. The effect of geometrical positioning errors of two horn monopulse missile mounted radars has been analyzed in this paper. As so gain differences between the two horns can cause variations in the miss distance. This aspect has also been studied. The variation of miss distance with jammer power to signal ratio (J/S) is also presented. It can be seen that the miss distance is always midway between the target and the decoy. Random angular positioning errors of the missile radar have been analyzed and it is found that the miss distance increases with increase of angular errors.
Volume: 9
Issue: 6
Page: 4696-4702
Publish at: 2019-12-01

Grid tied PV System using modular multilevel inverter

10.11591/ijpeds.v10.i4.pp2013-2020
Sujitha N. , Partha Sarathi Subudhi , Krithiga S. , Angalaeswari S. , Deepa T. , Subbulekshmi D.
A grid tied photovoltaic system using modular multilevel inverter topology is proposed in this paper. Basic unit structure of modular multilevel inverter used in this system is capable of converting DC power from PV array to AC power for feeding power to the household loads or utility grid. The proposed modular multilevel inverter structure has lesser power electronic devices compared to the existing multilevel inverter topologies. The proposed system generates a nearly sinusoidal signal and achieves better output profile with low total harmonic distortion. Simulation of the proposed system is carried out in MATLAB/Simulink software and the results are presented.
Volume: 10
Issue: 4
Page: 2013-2020
Publish at: 2019-12-01

Development of smart online partial discharge monitoring system for medium voltage power cable

10.11591/ijpeds.v10.i4.pp2190-2197
A. Z. Abdullah , M. Isa , M. N. K. H. Rohani , S. A. S. Jamalil , A. N. N. Abdullah , N. Azizan
This paper presents, the development of smart online partial discharge (PD) monitoring system for medium voltage (MV) underground power cable. PD monitoring is the highly efficient tool to monitor insulation degradation for high voltage (HV) equipment in order to avoid failures or breakdown. Selection of improved technology and performance of PD detection sensor, effective measurement technique and smart user friendly of graphical user interface (GUI) system are contributed towards the development of efficient monitoring system. This paper addresses three main aspects which are needed in completing the monitoring system. They are, the use of Rogowski coil (RC) as detection sensor, processing unit using Alterra board and integrated with GUI PD monitoring system for underground cable using LabVIEW. The monitoring system is compared to the conventional method with the PD signal used is measured from the real on-site measurement in order to analyse its performance. The analysis is performed in MATLAB and LabVIEW software’s environment and the maximum peak of PD signal is enabled to view using GUI which complete with the location information of PD source. Furthermore, this paper has contributed to solve the problem in selection the simplified and practical approach for PD sensor and monitoring system. In the perspective of automated condition monitoring, this smart online PD monitoring system provides a complete solution towards latest industrial revolutions
Volume: 10
Issue: 4
Page: 2190-2197
Publish at: 2019-12-01

User selection protocols in FD PSP EH cooperative network over rayleigh fading channel: outage and intercept probability

10.11591/ijpeds.v10.i4.pp2130-2137
Phu Tran Tin , Minh Tran , Van-Duc Phan , Hoang-Nam Nguyen , Thanh-Long Nguyen
In this paper, we investigate the system performance in term of outage probability (OP) and intercept probability (IP) user selection protocols in full-duplex (FD) power splitting protocol (PSP) energy harvesting (EH) cooperative network over the Rayleigh fading channel. In this network, security and privacy issues are significant due to the possible eavesdropping by surrounding users. In this case, the security performance and reliable performance are represented by outage probability (OP) and intercept probability (IP), respectively. The power-splitting energy harvesting protocol is applied in our analysis. We rigorously derive the closed-form expressions of both OP and IP of the system and study the effect of various parameters. Finally, the Monte Carlo simulation results are also performed to confirm the correctness of all theoretical analysis derived.
Volume: 10
Issue: 4
Page: 2130-2137
Publish at: 2019-12-01

MATLAB/Simulink based simulations of KY converter for PV panels powered LED lighting system

10.11591/ijpeds.v10.i4.pp1885-1893
G. Sureshkumaar , Nithiyananthan Kannan , Sunil Thomas
The main objective of this research work is to develop KY conveter topology for renewable energy sources.Solar energy is the readily available and is the cheapest form of energy. It is non-polluting and environment friendly. The development of high static gain DC-DC converters is an important research area due to the crescent demand of this technology for several applications supplied by low DC output voltage power sources. It is used to provide the uninterruptable power supply and battery powered to the system. So here, step-up DC-DC converters based on the KY converter are proposed for LED lighting systems. The proposed topologies present high voltages and high efficiency for low input voltage and high output voltage applications. The simulation results of the proposed topology have been presented using MATLAB/SIMULINK software.
Volume: 10
Issue: 4
Page: 1885-1893
Publish at: 2019-12-01

Control and Supervision of a Solar Electric System

10.11591/ijpeds.v10.i4.pp2096-2100
Khadidja Benabed , Boudghene Stambouli Amine , Benabadji Noureddine
Energy consumption is one of the biggest concerns because it is increasing and it has a great impact on our environment. Photovoltaic energy is a possible response to the challenges of the energy transition of tomorrow. For proper operation, the solar photovoltaic system needs a rigorous supervision of its electrical and physical parameters. Monitoring is one of the foundations of photovoltaic maintenance engineering. This article describes the design and realization of a solar monitor for the monitoring of the correct operation of a mini power plant from panels photovoltaic.
Volume: 10
Issue: 4
Page: 2096-2100
Publish at: 2019-12-01
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