Modelling and analysis of a wind turbine driven self excited induction generator.

Ermiş, Muammer


Hybrid excited synchronous generator design and comparison of direct drive wind turbines
Akgemci, Aysel; Keysan, Ozan; Department of Electrical and Electronics Engineering (2019)
Various types of electrical generators are used in wind turbines and there is not an agreement on the best generator type. Although, high speed Doubly Fed Induction Generators (DFIGs) are still the most common generator topology utilized in wind turbine systems, there is a trends toward direct-drive Permanent Magnet Synchronous Generators (PMSGs), as they are more efficient and reliable. However, permanent magnets (PMs) induce uncontrollable voltage due to the fixed flux resulting from PM excitation. Conven...
Design, implementation and verification of gas insulated load break switch at 12 kV voltage level /
Harmanlı, Ayşe Beril; Erkmen, İsmet; Department of Electrical and Electronics Engineering (2014)
In this thesis, the engineering design contributions on arc extinguishing method, relevant arc stretching issue, selection of magnet to obtain expected magnetic force, contact structure and magnet selection parameters, insulation medium properties and design effects, operation mechanism, arc modeling and derivation of the design arc modeling formula on 12 kV SF6 gas insulated load break switch is handled. By these contributions of the thesis, the design, prototype manufacturing and verification of the desig...
An FPA based BLDC motor control system
Uygur, Serdar; Güran, Hasan Cengiz; Department of Electrical and Electronics Engineering (2012)
In this thesis, position and current control systems for a brushless DC (Direct Current) motor are designed and integrated into one FPGA (Field Programmable Gate Array) chip. Experimental results are obtained by driving the brushless DC motors of Control Actuation System of a guided missile. Because of their high performance, brushless DC motors are widely used in Control Actuation Systems of guided missiles. In order to control the motor torque, current controller is designed and implemented in the FPGA. P...
Sizing of a series hybrid electric vehicle
Arıkan, Fuat Remzican; Ertan, Hulusi Bülent; Department of Electrical and Electronics Engineering (2019)
The main aim of this work is to investigate whether a cost competitive hybrid electric vehicle can be designed and under what conditions this can be achieved. For this purpose, first a light commercial vehicle is considered. Its model is developed in ADVISOR environment in Matlab and verified by comparing with the official tests of the vehicle, acceleration and NEDC fuel consumption, namely. Following that, electrical components are searched for rating, dimension, weight and cost through the literature and ...
Numerical investigation of self-organization and stable burning conditions of moderate pressure glow discharges in argon gas
Eylenceoğlu, Ender; Rafatov, İsmail; Department of Physics (2011)
In this study numerical modelling of a moderate pressure DC glow discharge plasma is car- ried out in 1D and 2D geometry. The governing equations include continuity equations for the plasma species (electrons, positive ions and metastable atoms), the electron energy equation (EEE), Poisson equation for the electric field in the discharge volume and the surface charge equation on the dielectric side walls. The electron transport coefficients such as the electron diffusion and mobility as well as the electron-imp...
Citation Formats
M. Ermiş, “Modelling and analysis of a wind turbine driven self excited induction generator.,” Ph.D. - Doctoral Program, Middle East Technical University, 1982.