Yayınlar & Eserler

SCI, SSCI ve AHCI İndekslerine Giren Dergilerde Yayınlanan Makaleler

Flat winding made of aluminum or copper sheet for axial flux machines

ÇAKAL G. , KEYSAN O.
IET ELECTRIC POWER APPLICATIONS, cilt.15, sa.4, ss.429-440, 2021 (SCI İndekslerine Giren Dergi) identifier

Layout Based Ultra-Fast Short-Circuit Protection Technique for Parallel Connected GaN HEMTs

Karakaya F. , Alemdar Ö. Ş. , Keysan O.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS, cilt.1, sa.1, ss.1, 2021 (SCI Expanded İndekslerine Giren Dergi)

Axial flux generator with novel flat wire for direct-drive wind turbines

Çakal G. , Keysan O.
IET RENEWABLE POWER GENERATION, 2021 (SCI İndekslerine Giren Dergi) identifier

Model Predictive Controller Utilized as an Observer for Inter-Turn Short Circuit Detection in Induction Motors

Şahin İ., Keysan O.
IEEE Transactions On Energy Conversion, cilt.1, sa.1, ss.1-6, 2020 (SCI Expanded İndekslerine Giren Dergi)

Comparison of PCB winding topologies for axial-flux permanent magnet synchronous machines

TOKGÖZ F. , ÇAKAL G. , KEYSAN O.
IET ELECTRIC POWER APPLICATIONS, cilt.14, sa.13, ss.2577-2586, 2020 (SCI İndekslerine Giren Dergi) identifier identifier

Adaptive controller based on grid impedance estimation for stable operation of grid-connected inverters under weak grid conditions

Temiz H., KEYSAN O. , Demirok E.
IET POWER ELECTRONICS, cilt.13, sa.13, ss.2692-2705, 2020 (SCI İndekslerine Giren Dergi) identifier identifier

A Hybrid Simulation Model for Electromagnetic Launchers including the Transient Inductance and Electromotive Force

Tosun N., Polat H., Ceylan D., Karagoz M., Yildirim B., Gungen I., et al.
IEEE Transactions on Plasma Science, cilt.48, sa.9, ss.3220-3228, 2020 (SCI İndekslerine Giren Dergi) identifier identifier

Optimization of a Convex Rail Design for Electromagnetic Launchers

Polat H., Tosun N., Ceylan D., KEYSAN O.
IEEE TRANSACTIONS ON PLASMA SCIENCE, cilt.48, sa.6, ss.2266-2273, 2020 (SCI İndekslerine Giren Dergi) Creative Commons License identifier identifier

Simulations and Experiments of EMFY-1 Electromagnetic Launcher

Ceylan D., Karagoz M., Cevik Y., Yildirim B., Polat H., KEYSAN O.
IEEE TRANSACTIONS ON PLASMA SCIENCE, cilt.47, sa.7, ss.3336-3343, 2019 (SCI İndekslerine Giren Dergi) identifier identifier

Improving the Thermal Performance of Rotary and Linear Air-Cored Permanent Magnet Machines for Direct Drive Wind and Wave Energy Applications

Mueller M. A. , Burchell J., Chong Y. C. , KEYSAN O. , McDonald A., Galbraith M., et al.
IEEE TRANSACTIONS ON ENERGY CONVERSION, cilt.34, sa.2, ss.773-781, 2019 (SCI İndekslerine Giren Dergi) Creative Commons License identifier identifier

A Rare-Earth Free Magnetically Geared Generator for Direct-Drive Wind Turbines

Zeinali R., KEYSAN O.
ENERGIES, cilt.12, sa.3, 2019 (SCI İndekslerine Giren Dergi) Creative Commons License identifier identifier

Multi-objective design optimization of a permanent magnet axial flux eddy current brake

Tarvirdilu-Asl R., Yuksel M., KEYSAN O.
TURKISH JOURNAL OF ELECTRICAL ENGINEERING AND COMPUTER SCIENCES, cilt.27, sa.2, ss.998-1011, 2019 (SCI İndekslerine Giren Dergi) identifier identifier

Armature Shape Optimization of an Electromagnetic Launcher Including Contact Resistance

Ceylan D., Gudelek M. U. , KEYSAN O.
IEEE TRANSACTIONS ON PLASMA SCIENCE, cilt.46, sa.10, ss.3619-3627, 2018 (SCI İndekslerine Giren Dergi) identifier identifier

Development of a superconducting claw-pole linear test-rig

Radyjowski P., KEYSAN O. , Burchell J., Mueller M.
SUPERCONDUCTOR SCIENCE & TECHNOLOGY, cilt.29, sa.4, 2016 (SCI İndekslerine Giren Dergi) Creative Commons License identifier identifier

A modular and cost-effective superconducting generator design for offshore wind turbines

KEYSAN O. , Mueller M.
SUPERCONDUCTOR SCIENCE & TECHNOLOGY, cilt.28, sa.3, 2015 (SCI İndekslerine Giren Dergi) identifier identifier

A Modular Superconducting Generator for Offshore Wind Turbines

KEYSAN O. , Olczak D., Mueller M. A.
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM, cilt.26, sa.5, ss.2103-2108, 2013 (SCI İndekslerine Giren Dergi) Creative Commons License identifier identifier

Real-Time Speed and Position Estimation Using Rotor Slot Harmonics

Keysan O. , ERTAN H. B.
IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS, cilt.9, sa.2, ss.899-908, 2013 (SCI İndekslerine Giren Dergi) identifier identifier

Application of high-temperature superconducting machines to direct drive renewable energy systems

KEYSAN O.
ELECTRICAL DRIVES FOR DIRECT DRIVE RENEWABLE ENERGY SYSTEMS, sa.24, ss.219-252, 2013 (SCI İndekslerine Giren Dergi) identifier

Designing the C-GEN lightweight direct drive generator for wave and tidal energy

KEYSAN O. , Mueller M., McDonald A., Hodgins N., Shek J.
IET RENEWABLE POWER GENERATION, cilt.6, sa.3, ss.161-170, 2012 (SCI İndekslerine Giren Dergi) identifier identifier

Design and Testing of a Linear Generator for Wave-Energy Applications

Hodgins N., KEYSAN O. , McDonald A. S. , Mueller M. A.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, cilt.59, sa.5, ss.2094-2103, 2012 (SCI İndekslerine Giren Dergi) identifier identifier

A Transverse Flux High Temperature Superconducting Generator Topology for Large Direct Drive Wind Turbines

KEYSAN O. , Mueller M. A.
Physics Procedia, cilt.36, ss.759-764, 2012 (SCI Expanded İndekslerine Giren Dergi) identifier identifier

A Homopolar HTSG Topology for Large Direct-Drive Wind Turbines

KEYSAN O. , Mueller M. A.
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, cilt.21, sa.5, ss.3523-3531, 2011 (SCI İndekslerine Giren Dergi) identifier identifier

Diğer Dergilerde Yayınlanan Makaleler

Performance comparison of passive series R and shunt R-C damped LCL filter for grid-connected inverters

Temiz H., Demirok E., KEYSAN O. , Turkay A., Cetinkaya B.
JOURNAL OF ENGINEERING-JOE, sa.18, ss.4698-4702, 2019 (ESCI İndekslerine Giren Dergi) identifier

Multi-physics design optimisation of a GaN-based integrated modular motor drive system

UĞUR M. , KEYSAN O.
JOURNAL OF ENGINEERING-JOE, sa.17, ss.3900-3905, 2019 (ESCI İndekslerine Giren Dergi) identifier

Tümleşik Modüler Motor Sürücü Sistemi Tasarımı

Uğur M., KEYSAN O.
Fırat Üniversitesi Mühendislik Bilimleri Dergisi, cilt.30, ss.75-83, 2018 (Diğer Kurumların Hakemli Dergileri)

Future Electrical Generator Technologies for Offshore Wind Turbines

KEYSAN O.
Engineering & Technology Reference, 2015 (Diğer Kurumların Hakemli Dergileri)

Integrated design and optimization of a direct drive axial flux permanent magnet generator for a tidal turbine

Keysan O. , McDonald A., Mueller M.
Renewable Energy and Power Quality Journal, cilt.1, sa.8, ss.1297-1302, 2010 (Diğer Kurumların Hakemli Dergileri) identifier

Hakemli Kongre / Sempozyum Bildiri Kitaplarında Yer Alan Yayınlar

Design and implementation of an optimized printed circuit board axial-flux permanent magnet machine

TOKGÖZ F. , ÇAKAL G. , KEYSAN O.
2020 International Conference on Electrical Machines, ICEM 2020, Virtual, Gothenburg, İsveç, 23 - 26 Ağustos 2020, ss.111-116 identifier

Fault Tolerance Capabilities of Three, Four and Six-Phase Configuratiions of a 24 Slot Modular PMSM

Bayazit G. H. , Uğur M., KEYSAN O.
IEEE International Conference on Power Electronics and Drive Systems (PEDS), Toulouse, Fransa, 9 - 12 Temmuz 2019

METU Smart Campus Project (iEAST)

ERTEKİN BOLELLİ Ş. , KEYSAN O. , GÖL M. , beyazıt h. , YILDIZ T., Marr A., et al.
International Conference on New Technologies, Development and Application, Sarajevo, Bosna-Hersek, 27 - 29 Haziran 2019, cilt.76, ss.287-297 identifier

Fault Tolerance Capabilities of Three, Four and Six-Phase Configurations of a 24 Slot Modular PMSM

BAYAZIT G. H. , Ugur M. , KEYSAN O.
13th IEEE International Conference on Power Electronics and Drive Systems, PEDS 2019, Toulouse, Fransa, 9 - 12 Temmuz 2019 identifier

Utilization and Optimization of Superconducting Coil Parameters in Electromagnetic Launcher Systems

Polat H., Ceylan D., KEYSAN O.
2019 IEEE Pulsed Power and Plasma Science, PPPS 2019, Florida, Amerika Birleşik Devletleri, 23 - 29 Haziran 2019 identifier

Applications of Superconductivity in the Energy Area

KEYSAN O.
ETAMSS 2018, 22 - 24 Şubat 2018

A simplified discrete-time implementation of FCS-MPC applied to an IM drive

ŞAHİN İ. , KEYSAN O.
21st European Conference on Power Electronics and Applications (EPE ECCE Europe), Genoa, İtalya, 3 - 05 Eylül 2019 identifier identifier

A Comparative Study of Capacitive and Inductive Pulsed Power Supply Topologies for Electromagnetic Launcher Applications

Ceylan D., Pourkeivannour S., KEYSAN O.
International Aegean Conference on Electrical Machines and Power Electronics (ACEMP) / International Conference on Optimization of Electrical and Electronic Equipment (OPTIM), İstanbul, Türkiye, 27 - 29 Ağustos 2019, ss.297-303 identifier identifier

High Bandwidth Current Control via Nonlinear Compensation and GaN-based VSI

Yuruk H., KEYSAN O. , Ulutas B.
IEEE 13th International Conference on Compatibility, Power Electronics and Power Engineering (IEEE IES CPE-POWERENG), Sonderborg, Danimarka, 23 - 25 Nisan 2019 identifier identifier

Design of Double Sided Linear Motor with Easy to Manufacture Hairpin Plate Winding

ÇAKAL G. , KEYSAN O.
12th International Symposium on Linear Drives for Industry Applications (LDIA), Neuchatel, İsviçre, 1 - 03 Temmuz 2019 identifier identifier

PCB Layout Based Short-Circuit Protection Scheme for GaN HEMTs

Alemdar O. S. , KARAKAYA F. , KEYSAN O.
11th Annual IEEE Energy Conversion Congress and Exposition (ECCE), Maryland, Amerika Birleşik Devletleri, 29 Eylül - 03 Ekim 2019, ss.2212-2218 identifier identifier

Investigation of Turn-on and Turn-off Characteristics of Enhancement-Mode GaN Power Transistors

KARAKAYA F. , DİLBEROĞLU M. U. , KEYSAN O.
20th European Conference on Power Electronics and Applications, EPE 2018 ECCE Europe, Riga, Letonya, 17 - 21 Eylül 2018 identifier

Evaluation of Photovoltaic Systems For Reactive Power Compensation In Low Voltage Power Systems

Uğur M. , Duymaz E., Göl M. , Keysan O.
ISGT Europe 2018, Sarajevo, Bosna-Hersek, 21 - 25 Ekim 2018 identifier identifier

Design of a GaN Based Integrated Modular Motor Drive

Uğur M., KEYSAN O.
2018 XIII International Conference on Electrical Machines (ICEM), 3 - 06 Eylül 2018 identifier

Design of a Power Plant Emulator for the Dynamic Frequency Stability Studies

Duymaz E., Pourkeivannour S., Ceylan D., ŞAHİN İ. , KEYSAN O.
2018 XIII International Conference on Electrical Machines (ICEM), 3 - 06 Eylül 2018 identifier

Minimization of EMF Harmonics and Cogging Torque for a Medium Speed RFPM Wind Turbine Generator

Akgemci A., Zeinali R., KEYSAN O.
7th International Conference on Renewable Energy Research and Applications (ICRERA), Paris, Fransa, 14 - 17 Ekim 2018, ss.342-347 identifier

Performance Comparison of Passive Series R and Shunt R-C Damped LCL Filter for Grid-Connected Inverters

temiz h., demirok e., KEYSAN O. , Türkay A., Çetinkaya B.
IET Renewable Power Generation Conference, 26 - 27 Eylül 2018

Investigation of Turn-on and Turn-off Characteristics

Karakaya F., Ugur M. , KEYSAN O.
20th European Conference on Power Electronics and Applications (EPE ECCE Europe), Riga, Letonya, 17 - 21 Eylül 2018 identifier

Design and Optimization of Reduced Torque Ripple Rotary Voice Coil Motor

Çakal G. , Zeinali R., KEYSAN O.
2018 XIII International Conference on Electrical Machines (ICEM), Alexandroupoli, Yunanistan, 3 - 06 Eylül 2018, ss.663 identifier identifier

Comparison of Inverter Topologies Suited for Integrated Modular Motor Drive Applications

Ugur M. , Sarac H., KEYSAN O.
18th IEEE International Power Electronics and Motion Control Conference (IEEE PEMC), Budapest, Macaristan, 26 - 30 Ağustos 2018, ss.524-530 identifier

Limited-Jerk Sinusoidal Trajectory Design for FOC of PMSM with H-infinity Optimal Controller

Mutlu M. K. , KEYSAN O. , Ulutas B.
18th IEEE International Power Electronics and Motion Control Conference (IEEE PEMC), Budapest, Macaristan, 26 - 30 Ağustos 2018, ss.704-710 identifier

A New Model Predictive Torque Control Strategy with Reduced Set of Prediction Vectors

ŞAHİN İ. , KEYSAN O.
12th IEEE International Conference on Compatibility, Power Electronics and Power Engineering (CPE-POWERENG), Doha, Qatar, 10 - 12 Nisan 2018 identifier

MODULAR AXIAL-FLUX DIRECT DRIVE PERMANENT MAGNETGENERATOR FOR WIND TURBINE APPLICATIONS

başkaya a., KEYSAN O.
WinerCost International Conference on Wind Energy Harvesting, 21 - 23 Mart 2018

Numerical Analysis of Temperature Distribution of Superconducting CoilStack

İNANIR F., BAK B., YILDIZ Ş., KEYSAN O.
ISMSIT 2017, Tokat, Türkiye, 2 - 04 Kasım 2017

Effect of conducting containment on electromagnetic launcher efficiency

Ceylan D., KEYSAN O.
2017 IEEE 18th International Symposium on Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering (ISEF), Lodz, Polonya, 14 - 16 Eylül 2017 identifier

Tümleşik Modüler Motor Sürücü Sistemi Tasarımı

Uğur M., KEYSAN O.
Ulusal Elektrik Enerjisi Dönüşüm Kongresi, Türkiye, 21 - 22 Eylül 2017

A Novel Magnetic Geared Superconducting Generator Designfor Direct-Drive Wind Turbines

Zeinali R., KEYSAN O.
JAPMED- Japanese-Mediterranean Workshop on Applied Electromagnetic Engineering for Magnetic, Superconducting, Multifunctional and Nanomaterials, 4 - 08 Temmuz 2017

ARMATURE SHAPE OPTIMIZATION OF AN ELECTROMAGNETIC LAUNCHER USING GENETIC ALGORITHM

Ceylan D., Gudelek M. U. , KEYSAN O.
21st IEEE International Conference on Pulsed Power (PPC), Brighton, İngiltere, 18 - 22 Haziran 2017 identifier

DC Link Capacitor Optimization for Integrated Modular Motor Drives

Ugur M. , KEYSAN O.
26th IEEE International Symposium on Industrial Electronics (ISIE), Edinburgh, Saint Helena, 18 - 21 Haziran 2017, ss.263-270 identifier

Optimizing the Efficiency in AC Energy Transfer via a Stack of Four Coils Made of 2G HTS Tapes

ERDOĞAN M., ÇİÇEK A., YILDIZ Ş., tunç s., KEYSAN O. , İNANIR F.
International Conference on Energy Systems, İstanbul, Türkiye, 21 - 23 Aralık 2016, ss.144-146

Finite Element Analysis of Simultaneous Electromagnetic and Heat Transfer Equations in HTS Coil

Tunç S., ERDOĞAN M., YILDIZ Ş., ÇİÇEK A., KEYSAN O. , İNANIR F.
International Conference on Energy Systems, 21 - 23 Aralık 2016

Design and implementation of an unregulated DC DC transformer DCX module using LLC resonant converter

Alemdar Ş., KEYSAN O.
8th IET International Conference on Power Electronics, Machines and Drives (PEMD 2016), Glasgow, İngiltere, 21 - 23 Nisan 2016 identifier

Analytical model for superconducting generators for wave energy systems

Bernholz J., KEYSAN O. , Mueller M.
8th IET International Conference on Power Electronics, Machines and Drives (PEMD 2016), Glasgow, İngiltere, 21 - 23 Nisan 2016 identifier

Optimal Power Aggregation Methods for Marine Renewable Energy Converters a Combined Economic and Reliability Approach

Lauramae m., FIONA DEVOY M., KEYSAN O. , MARTIN HEYMAN D., SARA A., JIMMY M., et al.
European Wave & Tidal Energy Conference, 6 - 11 Eylül 2015

Designing and Optimizing of High Field MRI Magnets Composed of 4 Layer Superconducting Coils Made of MgB2 Wire

İNANIR F., Pınar k., KEYSAN O.
European Conference on Applied Conductivity, 6 - 10 Eylül 2015

10 MW Superconducting Generator Design for Offshore Wind Turbines

KEYSAN O.
UK Magnetics Society, 07 Temmuz 2015

How electrical machine and drivetrain design can influence Offshore Wind Cost of Energy

ALASDAIR M., KEYSAN O.
UK Magnetics Society, 7 - 08 Temmuz 2015

Towards more reliable and cost effective superconducting generators for wind turbines

Keysan O. , Radyjowski P., Burchell J., Mueller M.
7th IET International Conference on Power Electronics, Machines and Drives, PEMD 2014, Manchester, İngiltere, 8 - 10 Nisan 2014, cilt.2014 identifier

Proposed structure for a HTS generator for direct drive offshore wind turbines

Burchell J., Keysan O. , Mueller M.
European Wind Energy Association Conference and Exhibition 2014, EWEA 2014, Barcelona, İspanya, 10 - 13 Mart 2014 identifier

An open source tool to estimate mass and efficiency of wind turbine power take-off systems

Keysan O. , Mueller M. A.
2nd IET Renewable Power Generation Conference, RPG 2013, Beijing, Çin, 9 - 11 Eylül 2013, cilt.2013 identifier

Implementation issues of real time position estimation for induction motors using rotor slot harmonics

ERTAN H. B. , Keysan O.
2013 4th International Conference on Power Engineering, Energy and Electrical Drives, POWERENG 2013, İstanbul, Türkiye, 13 - 17 Mayıs 2013, ss.1826-1832 identifier

Rotor Loss Prediction in Air-Cored Permanent Magnet Machines

Echenique E. J. P. , KEYSAN O. , Mueller M. A.
IEEE International Electric Machines and Drives Conference (IEMDC), Illinois, Amerika Birleşik Devletleri, 12 - 15 Mayıs 2013, ss.303-310 identifier identifier

Magnetic and Structural Analysis of a Transverse Flux Claw Pole Linear Machine

KEYSAN O. , Burchell J., Mueller M. A.
IEEE International Conference on Industrial Technology (ICIT), Cape-Town, Güney Afrika, 25 - 28 Şubat 2013, ss.1904-1908 identifier identifier

A linear superconducting generator for wave energy converters

KEYSAN O. , Mueller M.
6th IET International Conference on Power Electronics, Machines and Drives (PEMD 2012), Bristol, İngiltere, 20 - 22 Nisan 2012 identifier

Superconducting generators for renewable energy applications

KEYSAN O. , Markus M.
IET Conference on Renewable Power Generation (RPG 2011), Edinburgh, Saint Helena, 20 - 23 Nisan 2011 identifier

Speed position estimation by demodulating rotor slot harmonics

KEYSAN O. , ERTAN H. B.
The XIX International Conference on Electrical Machines - ICEM 2010, Rome, Italy, 6 - 08 Eylül 2010 identifier

A direct drive permanent magnet generator design for a tidal current turbine SeaGen

KEYSAN O. , Alasdair S M., Markus M.
2011 IEEE International Electric Machines & Drives Conference (IEMDC), Niagara Falls, ON, Canada, 15 - 18 Mayıs 2011 identifier

Linear generator for direct drive wave energy applications

Hodgins N., Keysan O. , McDonald A., Mueller M.
19th International Conference on Electrical Machines, ICEM 2010, Rome, İtalya, 6 - 08 Eylül 2010 identifier

Higher Order Rotor Slot Harmonics for Rotor Speed & Position Estimation

Keysan O. , ERTAN H. B.
12th International Conference on Optimization of Electrical and Electronic Equipment, Brasov, Romanya, 20 - 21 Mayıs 2010, ss.416-417 identifier identifier

C GEN a lightweight direct drive generator for marine energy converters

KEYSAN O. , McDonald A., Mueller M., Doherty R.
5th IET International Conference on Power Electronics, Machines and Drives (PEMD 2010), Brighton, İngiltere, 2 - 04 Nisan 2010 identifier

Determination of rotor slot number of an induction motor using an external search coil

KEYSAN O. , ERTAN H. B.
16th International Symposium on Electrical Apparatus and Technologies, SIELA 2009, Burgas, Bulgaristan, 4 - 06 Haziran 2009, cilt.2, ss.141-148 identifier

External Search Coil as a Means of Measuring Rotor Speed of an Induction Motor

ÖZLÜ ERTAN H. G. , KEYSAN O.
8th International Symposium on Advanced Electromechanical Motion Systems (ELECTROMOTION 2009)/EPE Chapter Electric Drives Joint Symposium, Lille, Fransa, 1 - 03 Temmuz 2009, ss.114-119 identifier

Kitap & Kitap Bölümleri

METU Smart Campus Project (iEAST)

ERTEKİN BOLELLİ Ş. , KEYSAN O. , GÖL M. , Bayazit H., Yildiz T., Marr A., et al.
New Technologies, Development and Application II, Isak Karabegović, Editör, Springer, ss.287-297, 2019

Application of high-temperature superconducting machines to direct drive renewable energy systems

Keysan O.
Electrical Drives for Direct Drive Renewable Energy Systems, Markus Mueller,Henk Polinder, Editör, Woodhead Publishing Limited , London, ss.219-251, 2013