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Publication type : Proceedings Paper ✕Publisher : IEEE Xplore Digital ... ✕
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Waveform Correlation Based Harmonic Voltage Contribution Determination of Iron and Steel Plants Supplied From PCC

Özgül SALOR-DURNA

In this research work, a new method which determines the individual harmonic voltage contributions of the EAF plants supplied from a point of common coupling (PCC) to the PCC voltage is presented. EAFs are one of the most significant sources of the harmonics, especially the uncharacteristic ones, therefore it is important to be able to discriminate the amount of individual contributions from the feeders of a PCC supplying multiple EAFs. The proposed method uses the relationship derived between the correlation coefficient of the PCC voltage and the feeder current waveforms and the harmonic volt ...More

Proceedings Paper 2022 Mühendislik Fakültesi IEEE Industry Applications Society Annual Meeting 31 Views
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Estimating Engagement in Gamified Activities

Rita İSMAİLOVA

The premise behind gamified learning systems is that they improve students’ motivation. However, there is still a scarcity of studies on examining motivational sources that may drive targeted motivation and engagement in gamified learning activities. Improving our understanding of this aspect requires a multi-faceted approach that allows both identifying relevant motivators and assessing their significance. We address this gap by employing three well-recognized theoretical frameworks: Self-determination theory, Expectancy Value theory and Big 5 Personality theory in experimental research aimed ...More

Proceedings Paper 2022 Mühendislik Fakültesi IEEE International Conference on Teaching, Assessment and Learning for Engineering (TALE) 23 Views
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Machine learning enabled the design of compact and efficient wavelength demultiplexing photonic devices

Mirbek TURDUEV

In this paper, we introduce the design approach of integrated photonic devices by employing reinforcement learning known as attractor selection (AttSel). Here, we combined 3D FDTD with AttSel algorithm, which is based on artificial neural networks, to achieve ultra-compact and highly efficient wavelength demultiplexers with low crosstalk such as. The presented devices consist of SOI materials, which are compatible with complementary MOS technology. Consequently, the reinforcement learning is successfully applied to design smaller and superior integrated photonic devices. Keyword: inverse desig ...More

Proceedings Paper 2023 Mühendislik Fakültesi 2023 IEEE Photonics Conference (IPC) 18 Views
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Optimal Design of Omni-directional Optical Cloaking by Annular Sectorized Unit-cells

Mirbek TURDUEV

In this manuscript, we demonstrate the design and experimental proof of an optical cloaking structure which multi-directionally conceals a perfectly electric conductor (PEC) object from an incident plane wave. The dielectric modulation around the highly reflective scattering PEC object is determined by an optimization process for multi-directional cloaking purposes. Keyword: component; formatting; insert; style; styling

Proceedings Paper 2023 Mühendislik Fakültesi 2023 IEEE Photonics Conference (IPC) 13 Views
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2D-HASAP: Two-Dimensional Heading-Aided Single-Anchor Positioning via Hidden Markov Model Map-Matching

Özgül SALOR-DURNA

This paper proposes a two-dimensonal positioning method based on a hidden Markov model map-matching scheme. The states of the hidden Markov model are generated by dividing the area of interest into a grid. At each time instant, the method considers two types of measurements: the platform's heading and the two-dimensional distance between the platform and the single-anchor. A recursive Bayesian estimator exploits these measurements to estimate the platform's position. The platform's heading measurement is used to calculate the prior probability distribution. Following this, observation likeliho ...More

Proceedings Paper 2023 Mühendislik Fakültesi IEEE International Conference on Multisensor Fusion and Integration for Intelligent Systems 15 Views
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Identifying the Cybercrime Awareness of Undergraduate and Postgraduate Students: Example of Kazakhstan

Rita İSMAİLOVA

Cybercrime is the offense related to the ethical and legal violation of the computer and IT system, a threat to the security of information systems, and abuse of the Internet platform. It is committed through the Internet or computer systems. Its direct and indirect results disrupt the flow of technological infrastructure. Gaining the knowledge or skills related to the types and content of the cybercrimes is an essential prerequisite in the digital era. Thus, it is very significant to raise the awareness of the younger generation, who will shape the future of societies. In accordance with this ...More

Proceedings Paper 2021 Mühendislik Fakültesi 2021 IEEE International Conference on Smart Information Systems and Technologies (SIST) 11 Views
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Investigation of Battery Energy Storage Utilization Strategies for Reducing the Unscheduled Power Flows in the Interconnection Lines Caused by Multiple Electric Arc Furnace Operations

Özgül SALOR-DURNA

In this paper, utilization strategies for battery energy storage systems (BESS) are assessed in order to reduce the unscheduled power flows in the interconnection lines caused by multiple electric arc furnace operations in Turkey. Turkish electricity network is synchronously connected to the European Network of Transmission System Operators for Electricity (ENTSO-E) via 3 EHV transmission lines. Extensive amount of intermittent loads like electric arc furnaces (EAF) in the electricity network cause unscheduled power deviations at the intertie lines hence Area Control Error (ACE) performance de ...More

Proceedings Paper 2023 Mühendislik Fakültesi IEEE Industry Applications Society Annual Meeting 7 Views
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An Electric Arc Furnace Model Based on Resynthesis Using Frequency Spectrum Distributions of EAF Currents

Özgül SALOR-DURNA

The research work presented in this paper proposes a method for modeling the behavior of the Electric Arc Furnace (EAF) currents for a tap-to-tap time based on the DFT amplitude histograms of the EAF current waves. The method is used to model the EAF current behavior separately for each phase of the EAF operation: boring, melting and refining. The model is verified by comparing the THD histograms and the flicker measurements of the original and modeled EAF current waveforms. The proposed model can be used as an EAF model in the simulation environment for various purposes before the installatio ...More

Proceedings Paper 2023 Mühendislik Fakültesi IEEE Industry Applications Society Annual Meeting 4 Views
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Formulas for solution of Riccati's equationle

Avıt ASANOV

In this paper we obtained the formula for the common solution of Riccati equations. Here Riccati equations was solved for common cases. Results obtained have been compared with the conventional ones and a comment has been made on them.

Proceedings Paper 2017 Fen Fakültesi 2017 International Multi-Conference on Engineering, Computer and Information Sciences (SIBIRCON) 81 Views
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Accuracy of Discrete Markov Approximation in the Problems of Estimation of Random Processes Characteristics

Ulan BRİMKULOV | Çinara CUMABAYEVA | Kasım BARIKTABASOV

Many computational algorithms related to Markov processes contain the covariance matrix of measurements. Approximation of covariance matrix of measurements of observed random process by the covariance matrix of Markov process is of great interest. Because it gives an opportunity to develop computationally efficient algorithms for analysis of Markov processes (parametric identification, filtering, interpolation and others). This paper presents the algorithm of approximation of the covariance matrix of the observed process by the covariance matrix of a multiply connected (m-connected) Markov p ...More

Proceedings Paper 2017 Mühendislik Fakültesi Proceedings of the 2017 Intelligent Systems Conference (IntelliSys) 117 Views
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A power system transient state estimation method based on Kalman filtering = Güç Sistemleri için Kalman Süzgecine Dayalı Bir Geçici Durum Kestirim Yöntemi

Mehmet KARADENİZ

On a power network, events are desired to be monitored to discover their reasons and to take preventive actions. Today, phase measurement units are used to obtain transient data of network, however these devices are expensive and it is not considered as a practical option to place one on each node of the network. Therefore, methods of estimating voltages and currents at non-measured points of the network are required. In this study, a special first-order Kalman Filter is introduced and transients on a power network connected by short lines are estimated using only line parameters. Simulation r ...More

Proceedings Paper 2016 Mühendislik Fakültesi 2016 24th Signal Processing and Communication Application Conference (SIU) 108 Views
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Predictive Compensation of EAF Flicker, Voltage Dips Harmonics and Interharmonics Using Deep Learning

Özgül SALOR-DURNA

In this research work, deep machine learning based methods together with a novel data augmentation are developed for predicting flicker, voltage dip, harmonics and interharmonics originating from highly time-varying electric arc furnace (EAF) currents and voltage. The aim with the prediction is to counteract both the response time delays and reaction time delays of active power filters (APFs) specifically designed for electric arc furnaces (EAF). Multiple synchronous Reference frame (MSRF) analysis is used to decompose the frequency components of the EAF current and voltage waveforms into dqo ...More

Proceedings Paper 2021 Mühendislik Fakültesi IEEE Industry Applications Society Annual Meeting 69 Views
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