Yazar "Guney, Ezgi" seçeneğine göre listele

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    A Comparative Velocity Control Study of Permanent Magnet Tubular Linear DC Motor by Using PID and Fuzzy-PID Controllers
    (Ieee, 2017) Guney, Ezgi; Demir, Memnun
    This paper presents, PID and Fuzzy-PID (FPID) controller to control frequency of Permanent Magnet Tubular Linear Direct Current Motor (PMTLDCM). In the study firstly, is released by motor frequency can be controlled using PID and FPID controller. There are 27 fuzzy rules for FPID of each parameter of PID controller. FPID controller has two inputs as error and change of error and has output signal. After all, the control program is loaded to LPC1768FBD100 ARM microcontroller, the rotor frequency regulation system PID controller and FPID controller is applied and experimental results have been transferred to PC by MATLAB. Consequently, PID and FPID control based simulation and experimental results examine and the simulation demonstrate that the FPID controller has a better behavior of the PMTLDCM motor, an excellent frequency tracking with minimum overshoot and minimum steady state error and give better performance compared to conventional PID controller.
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    An Eco-Friendly Gas Insulated Transformer Design
    (Mdpi, 2021) Guney, Ezgi; Ozgonenel, Okan
    Electricity companies around the world are constantly seeking ways to provide electricity more safely and efficiently while reducing the negative impact on the environment. Mineral oils have been the most popular transformer insulation, having excellent electrical insulating properties, but have many problems such as high flammability, significant cleaning problems, and are toxic to fish and wildlife. This paper presents an alternative approach to mineral oil: a transformer design that is clean and provides better performance and environmental benefits. A 50 kVA, 34.5/0.4 kV gas insulated distribution transformer was designed and evaluated using the COMSOL Multiphysics environment. R410A was used as insulation material. R410A is a near-azeotropic mixture of difluoromethane (CH2F2, called R-32) and pentafluoro ethane (C2HF5, called R-125), which is used as a refrigerant in air conditioning applications. It has excellent properties including environmentally friendly, no-ozone depletion, low greenhouse effect, non-explosive and non-flammable, First, the breakdown voltage of the selected gas was determined. The electrostatic and thermal properties of the R410A gas insulated transformer were investigated in the COMSOL environment. The simulation results for the performance of oil and SF6 gas insulated transformers using the same model were compared. The gas-insulated transformer is believed to have equivalent performance and is an environmentally friendly alternative to current oil-based transformers.
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    Öğe
    Artificial Neural Network Based Real Time Speed Control of a Linear Tubular Permanent Magnet Direct Current Motor
    (Ieee, 2017) Guney, Ezgi; Dursun, Mahir; Demir, Memnun
    This paper presents a real-time speed control for a linear tubular permanent magnet direct current motor (LTPMDCM) by using artificial neural network (ANN). Firstly, a novel form of LTPMDCM prototype has been developed for linear motions. Then, a low cost motor drive has designed for expected rapid response and precise position control. Software developed in MATLAB environment is used for speed control. Through this software, real-time speed control of the motor with ANN has been performed. The effectiveness of the proposed control system is verified by experimental results and presented.