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Hatice Gülçin Özlü Ertan

E-mail
ogulcin@metu.edu.tr
Department
Department of Basic English
Choice of Pole Number of Two-Rotor Axial-Flux PM Motor for Control Moment Gyroscope
Özlü Ertan, Hatice Gülçin; Yilmaz, K. (2011-09-10)
Modern low earth orbit satellites use control moment gyroscopes (CMG) for maneuvering. GMC's generally use a brushless DC motor to run an inertial wheel at about 10000 rpm. In this paper axial-flux BLDC motor is considered...
External Search Coil as a Means of Measuring Rotor Speed of an Induction Motor
Özlü Ertan, Hatice Gülçin; Keysan, Ozan (2009-07-03)
The study in this paper investigates whether the air gap harmonics can be identified by using an external search coil placed on the frame of an induction motor. For this purpose the study focuses on the prediction of rotor...
A Novel Noise Reduction Technology for Switched Reluctance Motors
Bizkevelci, Erdal; Özlü Ertan, Hatice Gülçin; Leblebicioğlu, Mehmet Kemal (2008-07-24)
The conditions are sought at which an SIR motor can be operated with highest efficiency, while producing a desired torque output at low shaft torque ripple. The investigation is based on the simulation software that uses m...
An Analytical Approach for the Calculation of Flux-Linkage Including End-Effect for SR Motors
Özlü Ertan, Hatice Gülçin; Yalciner, Levent B. (2008-06-13)
The accuracy of flux linkage-current-position curves has vital importance for designing SR motors. Analytical prediction of these curves is very difficult and as shown in this paper 2D approach leads to erroneous predictio...
Detection of some parameters of induction motors a proposal and its verification
Özlü Ertan, Hatice Gülçin; Sezgin, Volkan; Colak, Baris (2007-11-30)
This paper describes a novel approach for offline stator leakage inductance estimation method that can be used for self-tuning of induction motor drives. The paper briefly describes the theory behind the approach. The prop...
Effects of control parameters on SRM performance: A parametric search
Bizkevelci, E.; Özlü Ertan, Hatice Gülçin; Leblebicioğlu, Mehmet Kemal (2007-09-12)
This paper investigates the effects of the SRM control parameters on torque ripple and efficiency. The average shaft torque, torque ripple and the torque per ampere variation of the motor are observed at different turn-on ...
A novel approach to detection of some parameters of induction motors
Özlü Ertan, Hatice Gülçin; Murat, Ertan; Colak, Baris (2007-05-05)
This paper describes a novel approach for offline stator leakage inductance and online stator resistance estimation that can be used for self-tuning of induction motor drives. The paper briefly describes the theory behind ...
Prediction of motor speed for low cost induction motor drives
Özlü Ertan, Hatice Gülçin; Ozyurt, Caglar (2006-05-19)
In this paper speed estimation methods for low cost, variable frequency induction motor drives are investigated. Such methods are required to minimize the computational effort and show little parameter dependence. Existing...