Ozan Keysan

E-mail

keysan@metu.edu.tr

Department

Department of Electrical and Electronics Engineering

ORCID

0000-0002-6311-7906

Scopus Author ID

36349871300

Web of Science Researcher ID

AAZ-9096-2020

A battery degradation-aware energy management system for agricultural microgrids Safavi, Vahid; Vaniar, Arash Mohammadi; Bazmohammadi, Najmeh; Vasquez, Juan C.; Keysan, Ozan; Guerrero, Josep M. (2025-02-01) The integration of renewable energy sources (RESs) into power grids underscores the necessity for efficient energy storage solutions to ensure power balance and increase grid reliability. Although battery energy storage sy...
Rewinding of Old 44 MVA Hydro Generator Considering Vibrational Forces Yakut, M. Samet; Gülletutan, Görkem; Tosun, Nail; Keysan, Ozan (2024-10-09)
Early prediction of battery remaining useful life using CNN-XGBoost model and Coati optimization algorithm Safavi, Vahid; Mohammadi Vaniar, Arash; Bazmohammadi, Najmeh; Vasquez, Juan C.; Keysan, Ozan; Guerrero, Josep M. (2024-09-20) Lithium-ion (Li-ion) batteries are essential for modern power systems but suffer from performance degradation over time. Accurate prediction of the remaining useful life (RUL) of these batteries is critical for ensuring th...
Non-invasive real-time diagnosis of PMSM faults implemented in motor control software for mission critical applications Demirel, Aykut; Keysan, Ozan; El-Dalahmeh, Ma'd; Al-Greer, Maher (2024-06-15) The machine's health should be continuously monitored, or a test should be applied on a regular basis to predict failure before fatal damage is incurred. Unexpected failures, particularly in mission-critical applications, ...
Optimal sizing of battery energy storage system for a large-scale offshore wind power plant considering grid code constraints: A Turkish case study Mokhtare, Mohammad Hossein; Keysan, Ozan (2024-01-01) Integration of large-scale wind farms (WFs) into the grid has to meet the critical constraints set in the national grid code. Wind farm operators (WFOs) are inclined to comply with these constraints and avoid heavy penalty...
Design and Analysis of a GaN-Based Megahertz Integrated Motor Drive for a PCB Motor Gülsuna, Özgür; Tokgoz, Furkan; Karakaya, Furkan; Keysan, Ozan (2024-01-01) Printed circuit board (PCB) motors present a compelling alternative to commercial electric motors due to their cost-effective mass production. Furthermore, integrated motor drives have gained popularity thanks to their hig...
Modeling and Simulation of Fluxgate based Current Sensor Çay, Yunus; Demirok, Erhan; Keysan, Ozan (2024-01-01) Fluxgate-based current sensing is a prevalent method employed in residual-current devices (RCDs). However, the design and analysis of fluxgate transducers present challenges due to non-linear operational characteristics. A...
Nonlinear Modeling of the Fixed-Frequency Excited Fluxgate Current Sensor Cay, Yunus; Demirok, Erhan; Keysan, Ozan (2024-01-01) An accurate mathematical model of fixed frequency excited fluxgate current sensor has been developed. The excitation voltage source is square-wave, and the BH characteristic of a magnetic core is based on a continuous func...
Ripple Minimization in Asymmetric Interleaved DC-DC Converters Using Neural Networks Alemdar, Ozturk Sahin; Oner, Mustafa Umit; Altun, Ogün; Keysan, Ozan (2023-01-01) Interleaving can be employed to reduce ripples in multiphase DC-DC converters although phases are operated under asymmetric conditions such as different input voltages or loads. To allow ripple minimization under asymmetri...
A Hierarchical Control of Supercapacitor and Microsources in Islanded DC Microgrids Barati, Farhad; Ahmadi, Behzad; Keysan, Ozan (2023-1-01) This paper proposes a hierarchical control approach for SuperCapacitor (SC) energy storage and microsources in islanded DC microgrids. It takes into account microsources' dynamic and steady-state limitations. The proposed ...

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