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Browsing by Author "Yazıcı, İrfan"

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A FPGA Based Remote Accessible Digital System Laboratory Prototype

M. Serdar Bascil; Yazıcı, İrfan; Temurtaş, Feyzullah (IEEE COMPUTER SOC, 2012)

In this work, a FPGA based remote accessible digital system laboratory prototype is created for Electrical & Electronics Engineering undergraduate students. The system consists of an Altera DE2 development and education ...
Design of Model-reference Discrete-time Sliding-mode Power System Stabilizer

Yazıcı, İrfan; Özdemir, Ayhan (TAYLOR & FRANCIS INC, 2009)

Power system stabilizers improve the dynamic stability of power systems by increasing the damping torque of the synchronous machines in the system. Over the last four decades,various approaches for the design of power ...
Discrete-time integral terminal sliding mode based maximum power point controller for the PMSG-based wind energy system

Yazıcı, İrfan; Ersagun Kursat Yaylaci (INST ENGINEERING TECHNOLOGY-IET, 2019)

This study proposes a discrete-time integral terminal sliding mode controller (DITSMC) integrated with a sensorless maximum power point tracking (MPPT) method for a permanent magnet synchronous generator (PMSG)-based wind ...
Fast and robust software-based digital phase-locked loop for power electronics applications

Özdemir, Ayhan; Yazıcı, İrfan; Vural, Cabir (INST ENGINEERING TECHNOLOGY-IET, 2013)

In this study, a fast and fully software-based algorithm for digital phase-locked loop (PLL) is proposed via a new hybrid approach in software and hardware by using an advanced digital signal processor architecture. The ...
Fast and robust voltage control of DC-DC boost converter by using fast terminal sliding mode controller

Yazıcı, İrfan; Ersagun Kursat Yaylaci (INST ENGINEERING TECHNOLOGY-IET, 2016)

In this study, a fast terminal sliding-mode control scheme is proposed as a new approach for the voltage tracking control of the DC-DC boost converter affected by disturbances, such as the variations in the input voltage ...
Hardware-based simple, fast and accurate measurement of power system frequency using a hybrid system

Yazıcı, İrfan; Özdemir, Ayhan (SAGE PUBLICATIONS LTD, 2011)

All digital methods developed for frequency measurement suffer from one or more factors such as superimposed noise, non-linear static characteristics, high-order harmonics and slow response because of complex computations. ...
Improving Efficiency of the Tip Speed Ratio-MPPT Method for Wind Energy Systems by Using an Integral Sliding Mode Voltage Regulator

Yazıcı, İrfan; Ersagun Kursat Yaylaci (ASME, 2018)

This paper aims to increase the efficiency of the maximum power point tracking (MPPT) methods by using an integral sliding mode voltage regulator (ISMVR). The ISMVR is applied to one of the frequently used MPPT methods ...
Kendinden ayarlamalı sayısal PID tasarımı

Yazıcı, İrfan (Sakarya Üniversitesi, 2002)

ÖZET Anahtar Kelimeler: Nichols-Ziegler, PID, Eğri uydurma Bu çalışmada kendinden ayarlamalı PID kontrolörleri ele alınmış ve açık çevrim Nichols-Ziegler metodu kullanarak bu şekilde çalışan bir PID kontrolörü, 8051 tabanlı ...
Maximum power point tracking for the permanent magnet synchronous generator-based WECS by using the discrete-time integral sliding mode controller with a chattering-free reaching law

Yazıcı, İrfan; Yaylacı, Ersagun Kürşat (INST ENGINEERING TECHNOLOGY-IET, 2017)

In this study, a single sensor-based maximum power point tracking (MPPT) algorithm is presented for permanent magnet synchronous generator-based wind energy conversion system (WECS). The MPPT method used in this study uses ...
Model referans kayan kipli kontrolör tabanlı güç sistem kararlayıcı tasarımı

Yazıcı, İrfan (Sakarya Üniversitesi, 2008)

Güç sistemlerinin doğası gereği sıklıkla ve rastgele meydana gelen yük değişimleri sistemde küçük genlikli ve düşük frekanslı, 0.2-3 Hz, salınımların oluşmasına neden olur. Güç sistemlerinin kararlı çalışmayı sürdürebilmesi ...
Model-reference sliding mode control of a three-phase four-leg voltage source inverter for stand-alone distributed generation systems

Özdemir, Ayhan; Yazıcı, İrfan; Erdem, Zekiye (TUBITAK SCIENTIFIC & TECHNICAL RESEARCH COUNCIL TURKEY, 2015)

This paper proposes a discrete-time model-reference sliding mode control of three-phase four-leg voltage source inverters for stand-alone distributed generation systems. Three-phase four-leg voltage source inverters (VSIs) ...
Observer-based model following discrete sliding mode PSS for single machine system

Özdemir, Ayhan; Yazıcı, İrfan (WILEY-BLACKWELL, 2012)

Power system stabilisers (PSSs) are added to excitation systems of a synchronous generator as a supplementary controller to improve the dynamic stability of a power system by damping the electromechanical oscillations ...
Performance Comparison of Discrete Time Sliding Mode Control Techniques for Magnetic Levitation System

Dincer Maden; Yazıcı, İrfan (IEEE, 2017)

In this study, the control of magnetic levitation system in discrete time domain is considered. Magnetic ball levitation system model is identified, linearized near the equilibrium point and discretized in convenient ...