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25,002 Article Results

Comparison Analysis of Indirect FOC Induction Motor Drive using PI, Anti-Windup and Pre Filter Schemes

https://ijpeds.iaescore.com/index.php/IJPEDS/article/view/5056
Md Hairul Nizam Talib , Zulkifilie Ibrahim , Nasrudin Abd. Rahim , Ahmad Shukri Abu Hasim
This paper presents the speed performance analysis of indirect Field Oriented Control (FOC) induction motor drive by applying Proportional Integral (PI) controller, PI with Anti-Windup (PIAW) and Pre- Filter (PF). The objective of this experiment is to have quantitative comparison between the controller strategies towards the performance of the motor in term of speed tracking and load rejection capability in low, medium and rated speed operation. In the first part, PI controller is applied to the FOC induction motor drive which the gain is obtained based on determined Induction Motor (IM) motor parameters.  Secondly an AWPI strategy is added to the outer loop and finally, PF is added to the system. The Space Vector Pulse Width Modulation (SVPWM) technique is used to control the voltage source inverter and complete vector control scheme of the IM drive is tested by using a DSpace 1103 controller board. The analysis of the results shows that, the PI and AWPI controller schemes produce similar performance at low speed operation. However, for the medium and rated speed operation the AWPI scheme shown significant improvement in reducing the overshoot problem and improving the setting time. The PF scheme on the other hand, produces a slower speed and torque response for all tested speed operation. All schemes show similar performance for load disturbance rejection capability.DOI: http://dx.doi.org/10.11591/ijpeds.v4i4.6250
Volume: 5
Issue: 2
Page: 219-229
Publish at: 2014-10-01

Intelligent Linear Collaborative Beamforming for Multi-objective Radiation Beampattern in Wireless Sensor Networks

10.11591/ijeecs.v12.i10.pp7318-7329
N.N.N.A. Malik , M. Esa , S.K.S. Yusof , N.M.A. Latiff
Collaborative beamforming (CB) in wireless sensor networks (WSNs) promises improvement of communication performance and energy efficiency. The random distribution sensor nodes location within WSNs can introduce random beampattern mostly in the sidelobe region. In addition, higher energy consumption can occur as the randomness permits the generation of high peaks in radiation beampattern performance. Therefore, selecting a suitable spatial sensor node distribution is a challenge especially for WSNs. Collaborative sensor nodes in random deployment which performs as linear antenna array (LAA) can influence the radiation beampattern. However, it leads to the degradation of LAA and WSNs performances. Hence, an optimum algorithm for implementing CB method should be designed that takes into consideration not only the beampattern performance, but also the geometrical location of selected active nodes which cooperatively form an array antenna. In this article, a new algorithm known as intelligent linear sensor node array (ILSA) is presented. It is developed through the application of the proposed hybrid least square improved particle swarm optimization (HLPSO) algorithm. The newly proposed ILSA is constructed by means of collaborative nodes selection. The size of side lobe level (SLL) can vary significantly with desired multi-objectives. Simulation results obtained showed significant improved performance of the radiation beampattern. Thus, this motivates for exploiting the newly-developed optimum method in node geometrical location strategies of WSNs.
Volume: 12
Issue: 10
Page: 7318-7329
Publish at: 2014-10-01

Research on Rock Burst Monitoring and Early Warning Technology Based on RBF Neural Network

10.11591/ijeecs.v12.i10.pp7478-7485
Yong Zhang , Hui Cai , Yunfu Cheng
China is one of the most serious coal mine accidents inthe countries of the world. All of the accidents, rock burst is one of them. Therock burst in coal and rock mass, refers to the sudden power failure, release alarge number of catastrophic dynamic phenomena of energy. It can be destroy theroadway roof, cause other mine disasters, casualties and so on. In China, themine number with rock burst dangerous accounted for more than 20% of the total,Shandong QufuXing cun coal mine among them. In order to prevent to the happen of accident,the coal mine enterprise had been install all kinds of monitoring system, suchas SOS micro seismic system , Fully mechanized working face resistance ofsupport system and so on. Using sensors measuring and computer technology, thedata had been getting from the underground 1000 meters. According to the internal link ofpressure behavior between the basic regularity and variable, RBF neural networkhad been set up. From the model, it can forecast the risk index of rock burst,reveal the superincumbent stratum roof movement; master the process of stateand changes in the laws of underground pressure. It is important significanceto guide safe production of coal mine enterprises.
Volume: 12
Issue: 10
Page: 7478-7485
Publish at: 2014-10-01

Modeling and Simulation of Fuel cell (Dicks Larminie Model) based 3-Phase Voltage Source Inverter

https://ijece.iaescore.com/index.php/IJECE/article/view/5514
Gaurav Sachdeva
In the present work, performance of three phase voltage source inverter, while feeding different power factor loads, has been investigated. Fuel cells model namely Dicks Larminie model is used in input side as a DC source while dynamic load has been used at the output side. Dynamic load used is induction motor (IM). Performance of IM has been investigated under various loading conditions. ANN based control strategy has been proposed to find the conduction angle of a 3-Phase VSI and verified for IM load. Simulations have been performed using PSIM 7.0.5 and MATLAB 7.0.4.DOI:http://dx.doi.org/10.11591/ijece.v4i5.5508
Volume: 4
Issue: 5
Page: 691-696
Publish at: 2014-10-01

Characterization and Modeling of Power Electronics Device

https://ijpeds.iaescore.com/index.php/IJPEDS/article/view/5047
Tandjaoui Mohammed Nasser , Benachaiba Chellali , Abdelkhalek Othmane , B. Denai , Y. Mouloudi
During the three decades spent, the advances of high voltage/current semiconductor technology directly affect the power electronics converter technology and its progress. The developments of power semiconductors led successively to the appearance of the elements such as the Thyristors, and become commercially available. The various semiconductor devices can be classified into the way they can be controlled, uncontrolled category such as the Diode when it’s on or off state is controlled by the power circuit, and second category is the fully controlled such as the Metal Oxide Semiconductor Field Effect Transistor (MOSFET), and this category can be included a new hybrid devices such as the Insulated Gate Bipolar Transistor (IGBT), and the Gate Turn-off Thyristor (GTO). This paper describes the characteristics and modeling of several types of power semiconductor devices such as MOSFET, IGBT and GTO.DOI: http://dx.doi.org/10.11591/ijpeds.v5i2.4318
Volume: 5
Issue: 2
Page: 135-141
Publish at: 2014-10-01

Robust Control Strategy for Pneumatic Drive System via Enhanced Nonlinear PID Controller

https://ijece.iaescore.com/index.php/IJECE/article/view/5556
Sy Najib Sy Salim , M.F. Rahmat , A. A. M. Faudzi , Z. H. Ismail , N.H. Sunar , Shamsul Anuar Samsudin
This paper presents the pneumatic positioning system controlled by Enhanced Nonlinear PID (NPID) controller. The characteristic of rate variation of the nonlinear gain that are readily available in NPID controller is utilized to improve the performance of the controller. A Self-regulation Nonlinear Function (SNF) is used to reprocess the error signals with the purpose of continuously generating the values for the rate variation. Subsequently, the controller has successfully been implemented on dynamically changing loads and pressures. The comparison with the other available method such as. NPID and conventional PID are performed and evaluated.  The effectiveness of this method with Dead Zone Compensator (DZC) has also been successfully demonstrated and proven through simulations and experimental studies.DOI:http://dx.doi.org/10.11591/ijece.v4i5.6853
Volume: 4
Issue: 5
Page: 658-667
Publish at: 2014-10-01

Research on the Modulation Performance in GPON System

10.11591/ijeecs.v12.i10.pp7304-7310
Li Li , Chen Yan-Tao , Zhang Ji-Jun , Li Zhi-Rui , Cheng Wan-Li
This paper mainly does research and analysis on anti-dispersive performance and anti-nonlinear performance for intensity modulation formats such as NRZ, RZ, CS-RZ, DRZ, MD-RZ in 40Gbps high-speed single-channel optical transmission system. It compares the five pattern modulation formats in dispersion tolerance, nonlinear tolerance, and advantages and disadvantages in transmission distance. Anti-nonlinear effect ability of CSRZ, RZ are stronger than that of NRZ code; in the single-channel transmission system, DRZ and improved modulation format MDRZ have better resistance foranti-nonlinear performance, so they are suitable for long-distance transmission. RZ has the minimum dispersion tolerance. NRZ than RZ has higher spectrum efficiency than RZ, and thus have a better dispersion tolerance. CSRZ code has higher spectral efficiency, higher dispersion tolerance and nonlinear tolerance than RZ code, making it more suitable for long distance transmission.
Volume: 12
Issue: 10
Page: 7304-7310
Publish at: 2014-10-01

Graph Kernels and Applications in Protein Classification

10.11591/ijeecs.v12.i10.pp7501-7508
Jiang Qiangrong , Xiong Zhikang , Zhai Can
Protein classification is a well established research field concerned with the discovery of molecule’s properties through informa­tional techniques. Graph-based kernels provide a nice framework combining machine learning techniques with graph theory. In this paper we introduce a novel graph kernel method for an­notating functional residues in protein structures. A structure­ is first modeled as a protein contact graph, where nodes ­corres­pond to residues and edges connect spatially neighboring resi­dues. In experiments on classification of graph models of proteins, the method based on Weisfeiler-Lehman shortest path kernel with complement graphs outperformed other state-of-art methods.
Volume: 12
Issue: 10
Page: 7501-7508
Publish at: 2014-10-01

Bursts of Node Activation and Asynchronous Communication in Temporal Networks

10.11591/ijeecs.v12.i10.pp7445-7451
Yixin Zhu , Dongfen Li , Wenqiang Guo , Fengli Zhang
Development of sensor technologies and the prevalence of electronic communication services provide us with a huge amount of data on human communication behavior, including face-to-face conversations, e-mail exchanges, phone calls, message exchanges and other types of interactions in various online forums. These indirect or direct interaction form potential bridges of the virus spread. For a long time, the study of virus spread is based on the aggregate static network. However, the interaction patterns containing diverse temporal properties may affect dynamic processes as much as the network topology does. Some empirical studies show, the activation time and duration of vertices and links are highly heterogeneous, which means intense activity may be followed by longer intervals inactivity. We take heterogeneous distribution of the node inter-activation time as the research background to build an asynchronous communication model. The two sides of the communication don't have to be active at the same time. One derives the threshold of virus spreading on the communication mode and analyzes the reason the heterogeneous distribution of the vertex inter-activation time suppress the spread of virus. At last, the analysis and results from the model are verified on the BA network.
Volume: 12
Issue: 10
Page: 7445-7451
Publish at: 2014-10-01

Electrical Discharge Machining Flyback Converter using UC3842 Current Mode PWM Controller

https://ijpeds.iaescore.com/index.php/IJPEDS/article/view/5061
Nazriah Mahmud , Azli Yahya , Trias Andromeda
This paper presents a current mode Pulse Width Modulation (PWM) controlled Flyback converter using UC3842 for Electrical Discharge Machining current generator control circuit. Circuit simplicity and high efficiency can be achieved by a Flyback converter with current mode PWM controller. The behaviors of the system's operation is analyzed and discussed by varying the load resistance. Matlab sofware is used to simulate the Flyback converter where a prototype has been built and tested to verify it's performance. DOI: http://dx.doi.org/10.11591/ijpeds.v5i2.6680
Volume: 5
Issue: 2
Page: 261-267
Publish at: 2014-10-01

2.4 GHz Radio Wave Propagation Characteristics in Coal Mine Workface Tunnels

10.11591/ijeecs.v12.i10.pp7299-7303
Duan Zhao , Enjie Ding , Xin Wang
We proposed a novel ray-tracing based radio waves propagation (RTRWP) Law suitable for under-tunnel complex coal mine workface. The energy consumption model evaluation in complex coal mine workface is derived. Theoretical analysis about calculating the multiple reflections of the radio waves in coal mine workface is also provided. Computer simulations and field tests in workface tunnels show that this proposed RTRWP law can work effectively to describe the actual radio wave propagation environments in complex coal mine workface.
Volume: 12
Issue: 10
Page: 7299-7303
Publish at: 2014-10-01

Closed Loop Non Linear Control of Shunt Hybrid Power Filter for Harmonics Mitigation in Industrial Distribution System

https://ijpeds.iaescore.com/index.php/IJPEDS/article/view/5052
Arivarasu A , Muthukumar K , Balasubramanian R
In recent years, the amount of non-linear loads has been increasing considerably since there are improvements in power electronic equipment (such as adjustable speed drives or converter ac-dc, ac-ac, dc-ac and dc-dc) in industrial sectors which cause deterioration of the quality of the electric power supply through distortion of supply voltage and supply current. This has led to improvement of many stringent needs regarding generation of harmonic current, which are found in IEEE519 and IEC61000 standards. This paper proposes a non-linear function based closed loop control strategy (without load current extraction) for three-phase Shunt Active Power Line Conditioner and LC passive filter to compensate harmonics, power factor improvement and enhance the dynamic performance of Shunt Hybrid Power Filter (SHPF). By using a PI controller the DC bus voltage of the Shunt Active Power Filter is maintained constant. Results obtained from simulation shows the performance of expected hybrid filter in transient and steady state operation .This indicates that the controller is able to compensate even under severe load current imbalances.DOI: http://dx.doi.org/10.11591/ijpeds.v5i2.6181
Volume: 5
Issue: 2
Page: 185-194
Publish at: 2014-10-01

RETRACTED: A Blind Carrier Frequency Offset Estimation Scheme for OFDM Systems via Hybrid-ICA Algorithm

https://ijece.iaescore.com/index.php/IJECE/article/view/5545
Amin Jalili , Mehdi Chehel Amirani , Saied Balaneshin Kordan
This article has been retracted: please see Elsevier Policy on Article Withdrawal (https://www.elsevier.com/about/our-business/policies/article-withdrawal). This article has been retracted by agreement between the author and the Editor-in-Chief. A request by the author to update the paper after publication resulted in an agreement to retract the paper by the Author and Editor-in-Chief. -------------------- This paper addresses a new iterative blind carrier frequency offset (CFO) estimator in orthogonal frequency-division multiplexing (OFDM) systems. In our scenario, relying on a hybrid independent component analysis (ICA) scheme, a blind frequency offset estimator is proposed for OFDM systems employing single antenna. The proposed estimator is a combination of the fast fixed-point ICA (FastICA) algorithm and the natural-gradient ICA algorithm, which inherits the fast convergence and high accuracy of theses algorithms, respectively. As a major advantage, the proposed estimator works in an efficient way in practical high-data-rate OFDM systems especially with large number of subcarriers. To demonstrate the efficiency of our proposed algorithm, numerical results are provided from computer simulations and comparisons are made with other existing CFO estimators in the literature. It is shown that by applying our proposed algorithm, the normalized mean-square error of the CFO estimator is decreased to a high extent. DOI:http://dx.doi.org/10.11591/ijece.v4i5.6533
Volume: 4
Issue: 5
Page: 790-799
Publish at: 2014-10-01

Digital Encoder Designing for Mobile Robot Control

https://ijece.iaescore.com/index.php/IJECE/article/view/5555
Alireza Rezaee , Reza Afshar
In this paper we present the design of a quadrature decoder/counter interface IC (ASIC) that performs the decoding, counting, and bus interface function in digital motor control systems, employing an Altra FLEX 10KA, 2s150fg456 Xilinx device. The ASIC contains a pair of digital filters, a quadrature decoder, an up/down counter, a latch and inhibit circuit, and an 8-bit bus interface to a digital processing system. The design of digital of the digital filter is based on the finite state machine model with datapath (FSMD). A novel scheme for detecting the motor rotation direction is also proposed. The ASIC can be applied to a digital motor control system forgetting the rotation speed or position of the motor, which is quipped with an optical encoder. The data acquisition can be extended to 16-bit integer format by two continuos reading cycles. Simulation and experimental tests are shown to verify the ASIC function properly.DOI:http://dx.doi.org/10.11591/ijece.v4i4.5500
Volume: 4
Issue: 5
Page: 648-657
Publish at: 2014-10-01

Generation & Analysis of Harmonic for Various Combinations of Non-linear Load

10.11591/ijeecs.v12.i10.pp7249-7252
Subhabrata Mukherjee , Kunal Chakraborty , Dipak Kumar Datta
This paper refers to a comparative study of the harmonics generated by non-linear loads like compact fluorescent lamps (CFL). This work is carried out by measuring the frequency across the supply line by using CFL along with a resistive load. Here CF lamps are used as they are non-linear loads and generate frequencies of very high value. We have used three cfl lamps of different ratings such as 5, 14t and 20watt.
Volume: 12
Issue: 10
Page: 7249-7252
Publish at: 2014-10-01
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