Articles

Modeling and Real-Time Simulation of Induction Motor Using RT-LAB

10.11591/ijpeds.v9.i4.pp1476-1485

This paper presents the modeling and real-time simulation of an induction motor. The RT- LAB simulation software enables the parallel simulation of power drives and electric circuits on clusters of a PC running QNX or RT- Linux operating systems at sample time below 10 µs. Using standard Simulink models including SimPowerSystems models, RT-LAB build computation and communication tasks are necessary to make parallel simulation of electrical systems. The code generated by the Real-Time Workshop of RT- LAB is linked to the OP5600 digital real-time simulator. A case study example of real-time simulation of an induction motor system is presented.This paper discusses methods to overcome the challenges of real-time simulation of an induction motor system synchronizing with a real-time clock.

Volume: 9

Issue: 4

Page: 1476-1485

Publish at: 2018-12-01

Hybrid Multilevel Thresholding and Improved Harmony Search Algorithm for Segmentation

10.11591/ijece.v8i6.pp4593-4602

Erwin Erwin , Saparudin Saparudin , Wulandari Saputri

This paper proposes a new method for image segmentation is hybrid multilevel thresholding and improved harmony search algorithm. Improved harmony search algorithm which is a method for finding vector solutions by increasing its accuracy. The proposed method looks for a random candidate solution, then its quality is evaluated through the Otsu objective function. Furthermore, the operator continues to evolve the solution candidate circuit until the optimal solution is found. The dataset used in this study is the retina dataset, tongue, lenna, baboon, and cameraman. The experimental results show that this method produces the high performance as seen from peak signal-to-noise ratio analysis (PNSR). The PNSR result for retinal image averaged 40.342 dB while for the average tongue image 35.340 dB. For lenna, baboon and cameramen produce an average of 33.781 dB, 33.499 dB, and 34.869 dB. Furthermore, the process of object recognition and identification is expected to use this method to produce a high degree of accuracy.

Volume: 8

Issue: 6

Page: 4593-4602

Publish at: 2018-12-01

Losses Computation in Reciprocating Tubular Permanent Magnet Generator with SMC Core

10.11591/ijpeds.v9.i4.pp1545-1551

Behrooz Rezaeealam

Generally, the Permanent Magnet Tubular Generators (PMTG) are employed in the free-piston generator systems. In this paper, the PMTG with the core made of Soft Magnetic Composite (SMC) is employed, and then, the PMTG with the solid SMC core has cylindrical symmetry and also the outer diameter of the machine reduces in comparison to the ones with multipart laminated steel cores in which each part is radially placed along the air-gap and there is unexploited space between them. Here, a Finite Element Method (FEM) is developed in which the reciprocating motion of the translator is considered by moving mesh techniques and moreover, the Jiles-Atherton (JA) scalar hysteresis model is incorporated in the FE model to take into account the hysteresis losses. Then, the copper and core losses are computed and the equivalent circuit of the generator is derived. The calculated losses are compared with the ones obtained from the analytical methods.

Volume: 9

Issue: 4

Page: 1545-1551

Publish at: 2018-12-01

Photovoltaic Emulator for Grid-connected Quasi-Z-Sorce Inverter

10.11591/ijpeds.v9.i4.pp1976-1988

Zulhani Rasin , Muhammed Fazlur Rahman , Maaspaliza Azri , Md Hairul Nizam Talib , Auzani Jidin

The performance of PV panel is very much dependent on the amount of sun light as well as the temperature of the surrounding environment which normally hard to be predicted. The use of PV emulator in the investigation of solar inverter especially at a lab scale platform helps to mitigate the inconsistency factors due to this uncontrollable variation. This work discussed on the design and development of a PV emulator for the grid-connected quasi-Z-source inverter which has different topology and control method compared to the conventional voltage source inverter. The I-V characteristics of the PV panel is modelled from the commercially available product and through circuit analysis the relation between capacitor voltage control and the PV terminal voltage is established, thus realizing the MPPT operation. Results from both simulation and experimental verification demonstrated that the PV emulator successfully able to produce power for the inverter according to the requirement.

Volume: 9

Issue: 4

Page: 1976-1988

Publish at: 2018-12-01

Improved Chicken Swarm Optimization Algorithm to Solve the Travelling Salesman Problem

10.11591/ijeecs.v12.i3.pp1054-1062

Fayçal Chebihi , Mohammed essaid Riffi , Amine Agharghor , Soukaina Cherif Bourki Semlali , Abdelfattah Haily

This paper proposes a novel discrete bio-inspired chicken swarm optimization algorithm (CSO) to solve the problem of the traveling salesman problem (TSP) which is one of the most known problems used to evaluate the performance of the new metaheuristics. This problem is solved by applying a local search method 2-opt in order to improve the quality of the solutions. The DCSO as a swarm system of the algorithm increases the level of diversification, in the same way the hierarchical order of the chicken swarm and the behaviors of chickens increase the level of intensification. In this contribution, we redefined the basic different operators and operations of the CSO algorithm. The performance of the algorithm is tested on a symmetric TSP benchmark dataset from TSPLIB library. Therefore, the algorithm provides good results in terms of both optimization accuracy and robustness comparing to other metaheuristics.

Volume: 12

Issue: 3

Page: 1054-1062

Publish at: 2018-12-01

Control of Single Stage Grid Tied Photovoltaic Inverter Using Incremental Conductance Method

10.11591/ijpeds.v9.i4.pp1702-1708

K. Rajasekhara Reddy , V. Nagabhaskar Reddy , M. Vijaya Kumar

In this investigation, a study on grid-connected Photovoltaic (PV) system with single stage power conversion (SSPC) is proposed. Double Stage Power Conversion (DSPC) topology contains two power conversion stages namely DC-DC conversion and DC-AC conversion, but the SSPC system converts DC power to high-quality AC power supply for grid connected PV system. The SSPC system has several advantages over DSPC, such as better use of the PV arrays, higher efficiency, low cost and compact size. Present work proposes a Sinusoidal Pulse Width Modulation (SPWM) along with incremental conductance Maximum Power Point Tracking (IC-MPPT) for inverter switching. The PV voltage and Grid Voltages verifies under normal and change of atmospheric conditions using MATLAB / SIMULINK.

Volume: 9

Issue: 4

Page: 1702-1708

Publish at: 2018-12-01

A Generalized Parameter Tuning Method of Proportional-Resonant Controllers for Dynamic Voltage Restorers

10.11591/ijpeds.v9.i4.pp1709-1717

Phuong Vu , Ngoc Dinh , Nam Hoang , Quan Nguyen , Dich Nguyen , Minh Tran

Temporary voltage swells and sags appear with high frequency in electric power systems, and they significantly affect sensitive loads such as industrial manufacturing or communication devices. This paper presents a strategy to design proportional-resonant controllers for three full-bridge voltage-source converters with a common DC-link in dynamic voltage restorer systems. The proposed controllers allow the system to quickly overcome temporary unbalanced voltage sags. Simulation results carried out in MATLAB/Simulink and experimental results implemented in a Typhoon HIL402 device demonstrate the ability of the proposed design method. The results show that the system with the proposed controllers can ride-through single-phase or double-phase voltage sags up to 55% and three-phase voltage sags up to 70% in a duration less than one grid-voltage cycle.

Volume: 9

Issue: 4

Page: 1709-1717

Publish at: 2018-12-01

Implementation Optimal Location and Sizing of UPFC on Iraqi Power System Grid (132 kV) Using Genetic Algorithm

10.11591/ijpeds.v9.i4.pp1607-1615

Ghassan Abdullah Salman , Mohammed Hasan Ali , Ali Najim Abdullah

Electric power systems required efficient processors and intelligent methods for sustainability therefore, in this paper used Flexible AC Transmission System (FACTS) device specifically Unified Power Flow Controller (UPFC) because of its useful properties on series and shunt devices and used Genetic Algorithm (GA) to determine the optimal location and values of UPFC to achieve the following objectives: improve voltages profile, reduce power losses, treatment of power flow in overloaded transmission lines and reduce power generation. Consequently, all of these goals led to a reduction in the total cost of the power system. GA was applied to an Iraqi local power grid system (Diyala 132 kV) to find the optimal values and locations of UPFC for the purpose of achieving the objectives mentioned above using the MATLAB program. The simulation results showed the effectiveness of GA to calculate the optimum values and locations of UPFC and promising results were obtained for the Diyala power network (132 kV) with regard to the desired objectives.

Volume: 9

Issue: 4

Page: 1607-1615

Publish at: 2018-12-01

Design of shunt hybrid active power filter (SHAPF) to reduce harmonics in AC side due to Non-linear loads

10.11591/ijpeds.v9.i4.pp1926-1936

Madhu B R , Dinesh MN , Ravitheja BM

The quality of power is a major concern because of harmonics in the lines due to various sources. Passive filters have been used to eliminate the specific harmonics. In this paper shunt hybrid active power filter which consists of shunt active filter and shunt passive filter is designed to reduce harmonics in source side for non linear loads. The shunt passive filter includes a tuned RLC circuit that behaves like a band-pass filter for a particular harmonic content. The shunt active filter is a VSI that produces reverse harmonic current based on Clarke’s transformation. This paper presents the control strategy by implementing instantaneous reactive power theory to design Shunt Hybrid Active Filter (SHAPF) for a non linear load. The proposed control technique is simulated using MATLAB SIMULINK, Results prove there is considerable reduction in THD of source current from 30.35% to 3.25% with the proposed controller on shunt hybrid active power filter. The performance of SHAPF is better than Passive and Shunt Active Power Filters.

Volume: 9

Issue: 4

Page: 1926-1936

Publish at: 2018-12-01

Metrics and Benchmarks for Empirical and Comprehension Focused Visualization Research in the Sales Domain

10.11591/ijeecs.v12.i3.pp1340-1348

Loo Yew Jie , Doris Hooi-Ten Wong , Zarina Mat Zain , Nilam Nur Amir Sjarif , Roslina Ibrahim , Nurazean Maarop

Data visualization is an effort which aims to communicate data effectively and clearly to the audience through graphicalrepresentation. Data visualization efforts must be coordinated with an understanding into the Cognitive Learning Theory (CLT). In the sales domain, sales data visualization are made possible with the available Business Intelligence (BI) tools such as Microsoft Power BI, Tableau, Plotly, and others. These tools allow seamless interaction for the top management as well as the sales force with regard to the data. Sales data visualization comes with an array of advantages such as self-service analysis by business users, rapidly adapt to changing business conditions, and enable continuous on-demand reporting among others. The advantages of sales data visualization also comes with the challenges such as difficulty in identifying visual noise, high rate of image change, and high performance requirements. In an effort to reduce cognitive activity that does not enhance learning, sales visualization dashboard must be designed in a way that is neithertoo simplistic nor too complex to ensure that the Intrinsic Cognitive Load (ICL), Extrinsic Cognitive Load (ECL), and Germane Cognitive Load (GCL) are in sync with the audience. With the combination of sales data visualization and CLT, understanding complex sales details quickly is made possible by not only the top management of the organization, but also the sales force of the organization.

Volume: 12

Issue: 3

Page: 1340-1348

Publish at: 2018-12-01

Comparative Study of Controllers for an Isolated Full Bridge Boost Converter Topology in Fuel Cell Applications

10.11591/ijpeds.v9.i4.pp1644-1656

S. Vijaya Madhavi , G. Tulasi Ram Das

Now a day’s renewable energy sources became an interesting area of research of which fuel cells are emerged as an alternative source for producing electricity to meet the energy crisis. This led to a research on power conditioning systems through which fuel cell is interfaced to the utility. Of the different converter topologies Isolated full bridge boost converter (IFBC) topology is most suitable for fuel cell applications. In this paper a Predictive Switching Modulator (PSM) Control is proposed for the converter topology and its performance is compared with Linear Peak Current Mode control (LPCM), Non-Linear Carrier Control (NLC).

Volume: 9

Issue: 4

Page: 1644-1656

Publish at: 2018-12-01

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31,128 Article Results

Modeling and Real-Time Simulation of Induction Motor Using RT-LAB

Hybrid Multilevel Thresholding and Improved Harmony Search Algorithm for Segmentation

Losses Computation in Reciprocating Tubular Permanent Magnet Generator with SMC Core

Photovoltaic Emulator for Grid-connected Quasi-Z-Sorce Inverter

Improved Chicken Swarm Optimization Algorithm to Solve the Travelling Salesman Problem

Control of Single Stage Grid Tied Photovoltaic Inverter Using Incremental Conductance Method

A Generalized Parameter Tuning Method of Proportional-Resonant Controllers for Dynamic Voltage Restorers

Implementation Optimal Location and Sizing of UPFC on Iraqi Power System Grid (132 kV) Using Genetic Algorithm

Design of shunt hybrid active power filter (SHAPF) to reduce harmonics in AC side due to Non-linear loads

Metrics and Benchmarks for Empirical and Comprehension Focused Visualization Research in the Sales Domain

Comparative Study of Controllers for an Isolated Full Bridge Boost Converter Topology in Fuel Cell Applications

Control Methods on Three-phase Power Converters in Photovoltaic Systems

Lossless 4D Medical Images Compression Using Adaptive Inter Slices Filtering

Provisioning of Street Lighting based on Ambience Intensity for Smart City

Automation of DMPS Manufacturing by using LabView &PLC

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