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28,188 Article Results

Analysis of Five-Level DSTATCOM for Harmonic Reduction in Power System Due To Non-Linear Loads

10.11591/ijeecs.v4.i2.pp286-297
N. Raveendra , V. Madhusudhan , A. Jayalaxmi
This paper deals with the elimination of harmonics at PCC in the presence of non-linear type of loads. Introduction of five-level DSTATCOM at PCC injects compensating currents for the minimization of harmonic content in the source currents. Non-linear loads when connected to the system draw non-linear components of current leaving undesired harmonics at the source side. DSTATCOM when connected to the system at the coupling point induces compensating currents to nullify harmonics. This paper introduces the simulation modelling of five-level DSTATCOM for harmonic elimination. Matlab/Simulink  modelling was done for the system without DSTATCOM and its harmonic contents were shown. The system without DSTATCOM is compared with the system with the presence of DSTATCOM showing their respective THD in the source current. Five level DSTATCOM was validated by considering fixed load and variable load. Simulation work was carried out for three types of systems and results were obtained using Matlab/Simulink.
Volume: 4
Issue: 2
Page: 286-297
Publish at: 2016-11-01

Learning Vector Quantization Image for Identification Adenium

10.11591/ijeecs.v4.i2.pp383-389
Resty Wulanningrum , Bagus Fadzerie Robby
Information and technology are two things that can not be separated and it has become a necessity for human life. Technology development at this time was not only used for intelligence purposes only, but has penetrated the world of holtikurtura. Adenium is one of the plants are much favored by ornamental plants lovers. Many of cultivation adenium who crosses that appear new varieties that have the color and shape are similar to each other. From this case, then made an application that can identify the type of adenium based on the image of that flower. Learning Vector quantization is one of the algorithm  that used for clustering. Based on test scenarios were performed, image identification applications Adenium petals produce an accuracy of 86.66% with a number of training dataset of 135 images and datasets with a test as many as 45 images max epoch 10 and learning rate between 0.01 to 0.05.
Volume: 4
Issue: 2
Page: 383-389
Publish at: 2016-11-01

An FPGA Implementation of On Chip UART Testing with BIST Techniques

10.11591/ijres.v5.i3.pp170-176
P Bala Gopal , K Hari Kishore
A Universal Asynchronous Receiver Transmitter (UART) is usually implemented for asynchronous serial communication, mostly used for short distance communications. It allows full duplex serial communication link and is used in data communication and control system. Nowadays there is a requirement for on chip testing to overcome the product failures. This paper targets the introduction of Built-in self test (BIST) for UART to overcome the above two constraints of testability and data integrity. The 8-bit UART with BIST module is coded in Verilog HDL and synthesized and simulated using Xilinx XST and implemented on SPARTAN 3E FPGA. Results indicate that this model eliminates the need for expensive testers and thereby it can reduce the development time and cost.
Volume: 5
Issue: 3
Page: 170-176
Publish at: 2016-11-01

Digitalized Electronic Voting System

10.11591/ijres.v5.i3.pp143-147
Dukka Bindu Venkata Raghav , Sunith Kumar Bandi
In the present scenario, Electronic Voting Machines ("EVM") are being used in India, generally for state elections. These EVMs are being used since 1999 upto till date. The EVMs reduce the time for both casting a vote and declaring the results when compared to the old paper ballot systems, up to 2004 there is no Tampering and security provided for EVMs after 2004 Supreme court and Election Commission decided to introduce EVMs with Voter Verified Paper Audit Trail(VVPAT) system but it also having some difficulties like missing of names in the voter list, requirement of huge manpower, storing of EVMs for counting purpose etc, so our proposed method is useful to overcome above problems in the voting system by using the Biometric and Aadhaar  information.  
Volume: 5
Issue: 3
Page: 143-147
Publish at: 2016-11-01

Improved Performance of DPFC Using Sliding Mode Controller Method

10.11591/ijece.v6i5.pp2073-2079
D Narasimha Rao , T Surnedra , S Tara Kalyani
Modern power systems demand the need of active power flow with the help of Power Electronics control devices is needed. In the family of Flexible AC Transmission devices (FACTS), Dynamic PFC (DPFC) offers the same controlling function as Unified PFC (UPFC), comprising the control of transmission angle, bus voltage and line impedance. A technical modification of UPFC is DPFC in which fluctuations of voltage at DC link is eliminated that enables the individual operation as series and parallel controllers. The concept of DFACTS is used in design of the series converter. The replacement of  the  high  rating  three  phase  series  converter with  the multiple low rating single phase converters results in cost reduction and increases reliability greatly. This DC Link is used to transfer the real power between two converters in UPFC such as in DPFC which eliminates the 3rd harmonic frequencies at transmission lines. D-FACTS converters are acting as insulation between high voltage phases acts as 1-ᴓ floating with respect to ground. These results in lower cost for the DPFC system compared to the UPFC. This paper describes the comparison of PI and Sliding Mode Controllers which conclude that SMC is a better control strategy compared to PI.
Volume: 6
Issue: 5
Page: 2073-2079
Publish at: 2016-10-01

Statistical Based Audio Forensic on Identical Microphones

10.11591/ijece.v6i5.pp2211-2218
Fajri Kurniawan , Mohd. Shafry Mohd. Rahim , Mohammed S. Khalil , Muhammad Khurram Khan
Microphone forensics has become a challenging field due to the proliferation of recording devices and explosion in video/audio recording. Video or audio recording helps a criminal investigator to analyze the scene and to collect evidences. In this regards, a robust method is required to assure the originality of some recordings. In this paper, we focus on digital audio forensics and study how to identify the microphone model. Defining microphone model will allow the investigators to conclude integrity of some recordings. We perform statistical analysis on the recording that is collected from two microphones of the same model. Experimental results and analysis indicate that the signal of sound recording of identical microphone is not exactly same and the difference is up to 1% - 3%.
Volume: 6
Issue: 5
Page: 2211-2218
Publish at: 2016-10-01

Feasibility and Efficacy of BLE Beacon IoT Devices in Inventory Management at the Shop Floor

10.11591/ijece.v6i5.pp2362-2368
Ravi Ramakrishnan , Loveleen Gaur , Gurinder Singh
Inventory Management is a key area for customer service and cost optimization in any manufacturing setup. As companies turn global and have thousands of components and hundreds of warehouses the inventory becomes a nightmare and a lot of time is spend in tracking inventory and ensuring right shipments. Traditional systems of robotic arms for inventory pick and drop have been based on premises of marking areas of the warehouse and tracking it. However with the advent of IoT all this is set to change as inventory objects become more self-aware and self-broadcasting. This paper technically suggests an approach of managing inventory using low energy blue tooth beacons and also does a statistical case research on two groups of the same organization one before the pilot run where traditional barcode scanners are used to track inventory and other one where the pilot trial BLE beacon technology was used. Statistically the IoT-beacon users are much more efficient and accurate and save lot of time and costs in the short run itself.
Volume: 6
Issue: 5
Page: 2362-2368
Publish at: 2016-10-01

The User Satisfaction Perspectives of the Information System Projects

10.11591/ijeecs.v4.i1.pp215-223
A’ang Subiyakto Subiyakto , Abd. Rahman Ahlan Rahman Ahlan , Mira Kartiwi , Syopiansyah Jaya Putra , Yusuf Durachman
It is inevitable that information system (IS) has been the essential role in the management and academic functions of the higher education institutions (HEIs) in developing countries, like Indonesia. In this country, despite the IS project developments have been performed since 1980s, but its performances tended still low. The efforts have been performed for responding this issue, but the studies have been remained in limited number. Accordingly, this study was carried out to know what factors that influence the satisfactions, in respect of its significant effects towards the project performances. The internal stakeholders were the population, which was sampled using the purpose random sampling. The 52 (87%) paper based data and the 61 (9%) online ones were then used in the data analysis stage with the partial least squares-structural equation modeling (PLS-SEM) method. The results revealed that, besides the system and service qualities directly affected the endogenous variable, the institutional contexts also indirectly influenced the variable. The study remained limitations, but its findings may theoretically and practically contributes towards the user satisfaction measurement, especially from the perspectives of the Islamic HEIs in Indonesia.
Volume: 4
Issue: 1
Page: 215-223
Publish at: 2016-10-01

PV-Transformer-Less Inverter Topology for Battery-Equivalent DC Supply from Leakage Current

10.11591/ijece.v6i5.pp2025-2032
Md. N. H. Khan , Md. T. Anowar , Md. D. Hossen , Md. M. Alam , K. J. Ahmad
Solar panels used for electricity generation have got inverters as their core components. Such inverters are made from switching devices coupled with additional circuit component configured in a transformer-less topology in recent reported works. A transformer-less topology suffers from the drawbacks of lack of isolation leading to leakage current flow from various points of it down to ground. The leakage in inverters might be troublesome as it may lead to loss in power, and may cause malfunctioning of analog devices normally used in power inverters. In this work, we identify possible leakage currents in a given transformer-less topology using the circuit analysis principles. The conversion of so obtained leakage currents into a useful DC voltage is carried out in this work. This work focuses on converting leakage current into small DC voltage in the range of ~1.1004V using recently reported rectifier circuits, supplying a load of 200Ω in the mW range. Although small in magnitude, such voltage sources could be used for battery charging purposes or driving small loads.
Volume: 6
Issue: 5
Page: 2025-2032
Publish at: 2016-10-01

Wood Classification Based on Edge Detections and Texture Features Selection

10.11591/ijece.v6i5.pp2167-2175
Achmad Fahrurozi , Sarifuddin Madenda , Ernastuti Ernastuti , Djati Kerami
One of the properties of wood is a mechanical property, includes: hardness, strength, cleavage resistance, etc. Among these properties there that can be measured or estimated by visual observation on cross-sectional areas of wood, which is based on inter-fiber density, fiber size, and lines that build the annual rings. In this paper, we proposed a new wood quality classification method based on edge detections. Edge detection is applied to the wood test images with the aim to improving the characteristics of wood fibers so as to make it easier to distinguish their quality. Gray Level Co-occurrence Matrix (GLCM) used to obtain wood texture features, while the wood quality classification done by Naïve Bayes classifier. Found in our experimental results that the first-order edge detection is likely to provide a good accuracy rate and precision. The second order edge detection is highly dependent on the choice of parameters and tends to give worse classification results, as filtering the original wood image, thus blurring characteristics related to wood density. Selection of features obtained from co-occurrence matrix is also quite affected the classification results.
Volume: 6
Issue: 5
Page: 2167-2175
Publish at: 2016-10-01

Node Cooperation to Avoid Early Congestion Detection Based on Cross-Layer for Wireless Ad Hoc Networks

10.11591/ijece.v6i5.pp2322-2330
Abdalrazak Tareq Rahem , Mahamod Ismail , Nor Fadzilah Abdullah , Mohammed Balfaqih
The resent application of wireless ad hoc networks (WANET) demands a high and reliable data load. The simultaneous transfer of large amounts of data different nearby sources to nearby destinations in a massive network under these circumstances results in the possibility of network congestion. Congestion is an extremely unwanted condition because it creates extra overhead to the already deeply loaded environment, which ultimately leads to resource exhaustion, and can lead to packet drops and retransmission at either the MAC or upper layers. We present a lightweight congestion control and early avoidance congestion control scheme, which can effective control congestion while keeping overhead to a minimum. This scheme is based on the Cross-layer between the MAC and network layers lead to early detection of congestion. With the help of node cooperation the sender node is triggered to find an alternative route based on TMT. This mechanism controls the network resources rather than the data traffic. Detailed performance results show enhancement in the throughput and packet delivery ratio, as well as a reduction in packet drop. Generally, network performance increases.
Volume: 6
Issue: 5
Page: 2322-2330
Publish at: 2016-10-01

Social Media Success for Knowledge Sharing: Instrument Content Validation

10.11591/ijece.v6i5.pp2447-2453
Setiawan Assegaff , Kurniabudi Kurniabudi , Hendri Hendri
Knowledge sharing is important activity for create a new knowledge. Information technology today brings big oppurtubity for people in conduct knowledge sharing. This media provides effective and competitive technology tool for knowledge sharing. The aimed of this study is to report the on process research that investigates the success of social media for sharing knowledge among scholars in Indonesia. This study focus to discuss the instrument development stages from the research especially discuss how content validity conduct for in instrument validation progress. Method for content validation progress was adopting from Beck and Gale approach in nursing area. This study resulted in a validated instrument from content validation approach.
Volume: 6
Issue: 5
Page: 2447-2453
Publish at: 2016-10-01

Rapid Prototyping Methodology of Lightweight Electronic Drivers for Smart Home Appliances

10.11591/ijece.v6i5.pp2114-2124
Trio Adiono , Rachmad Vidya Wicaksana Putra , Maulana Yusuf Fathany , Braham Lawas Lawu , Khilda Afifah , Muhammad Husni Santriaji , Syifaul Fuada
Many researches have been conducted in smart home topic. Mostly, they discussed on the specific aspect of application. On the other side, many applications still can be explored and attached into the system. Several main challenges in designing the application devices are system complexity, reliability, user friendliness, portability, and low power consumption. Thus, design of electronic driver is one of the key elements for overcoming these challenges. Moreover, the drivers have to comply the rules of smart home system, data protocol, and application purpose. Hence, we propose a rapid prototyping methodology on designing lightweight electronic drivers for smart home appliances. This methodology consists of three main aspects, namely smart home system understanding, circuitry concept, and programming concept. By using this method, functional and lightweight drivers can be achieved quickly without major changes and modifications in home electrical system. They can be remotely controlled and monitored anytime and from anywhere. For prototyping, we design several drivers to represent common electronic and mechanical based applications. Experimental results prove that the proposed design methodology can achieve the research target.
Volume: 6
Issue: 5
Page: 2114-2124
Publish at: 2016-10-01

Synthesis of an Optimal Dynamic Regulator Based on Linear Quadratic Gaussian (LQG) for the Control of the Relative Humidity under Experimental Greenhouse

10.11591/ijece.v6i5.pp2262-2273
M. Outanoute , A. Lachhab , A. Ed-dahhak , M. Guerbaoui , A. Selmani , B. Bouchikhi
This paper describes one practical approach that suggests a model based technique to control in real time the relative humidity under greenhouse. The humidity level is one of the most difficult environmental factors to be regulated in greenhouse. Moreover, maintaining and correcting for more or less humidity can be a challenge for even the most sophisticated monitoring and control equipment. For these raisons, a Linear Quadratic Gaussian (LQG) controller for relative humidity regulation under greenhouse turns out to be useful. Indeed a LQG controller is proposed for a relative humidity under a greenhouse control task. So, the state space model, which is best fitting the acquired data, was identified using the Numerical Subspace State Space System IDentification (N4SID) algorithm. The mathematical model that is obtained will be used for evaluating the parameters of LQG strategy. The proposed controller is implemented in two steps, in one hand, Kalman filter (KF) is used to develop an observer that estimates the state of relative humidity under greenhouse. In the other hand, the state feedback controller gain is estimated using a linear quadratic criterion function. The suggested optimal implemented controller using Matlab/Simulink environment is applied to an experimental greenhouse. We found, according to the results, that the controller is able to lead the inside relative humidity to the desired value with high accuracy, regardless of the external disturbances.
Volume: 6
Issue: 5
Page: 2262-2273
Publish at: 2016-10-01

An Unequal Cluster-based Routing Protocol Based on Data Controlling for Wireless Sensor Network

10.11591/ijece.v6i5.pp2403-2414
Slaheddine Chelbi , Majed Abdouli , Mourad Kaddes , Claude Duvallet , Rafik Bouaziz
Wireless Sensor Networks (WSN) differ from traditional wireless communication networks in several characteristics. One of these characteristics is power awarness, due to the fact that the batteries of sensor nodes have a restricted lifetime and are difficult to be replaced. Therefore, all protocols must be designed to minimize energy consumption and preserve the longevity of the network. In this paper, we propose (i) to fairly balance the load among nodes. For this, we generate an unequal clusters size where the cluster heads (CH) election is based on energy availability, (ii) to reduce the energy consumption due to the transmission by using multiple metrics in the CH jointure process and taking into account the link cost, residual energy and number of cluster members to construct the routing tree and (iii) to minimize the number of transmissions by avoiding the unnecessary updates using sensitive data controller. Simulation results show that our Advanced Energy-Efficient Unequal Clustering (AEEUC) mechanism improves the fairness energy consumption among all sensor nodes and achieves an obvious improvement on the network lifetime.
Volume: 6
Issue: 5
Page: 2403-2414
Publish at: 2016-10-01
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