Browsing by Author "Altinay M."

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Control of LCL filter based Voltage source converter
(2010-12-27) Şehirli E.; Altinay M.
In this paper, the control of Voltage source converter which consists of six IGBT power switches is realized. Grid connection of VSC is provided through LCL filter and sinusoidal pulse width modulation (SPWM) technique which has 9 kHz switching frequency, is used for switching. Three different way of control including a - b - c, d - q and input - output linearization nonlinear control, are analyzed and achieved with simulations in Matlab/Simulink. The effects of control methods to the grid and dc - link are examined. © 2010 IEEE.
Input - Output linearization control of three - Phase voltage source PWM rectifier using L and LCL filter
(2010-12-01) Şehirli E.; Altinay M.
In this paper, simulations of three - phase voltage source rectifier using L and LCL filter under input - output linearization nonlinear control, are realized. The control algorithm requires transformations between a-b-c and d-q frames. A bridge rectifier having six IGBT power switches has been employed. For switching, compared triangular wave sinusoidal pulse width modulation (SPWM) technique has been utilized and switching frequency is adjusted to 9 kHz. Simulations are carried out with Matlab/Simulink. A major advantage of using LCL filter compared with the L filter which is the attenuation of harmonics caused by the PWM rectifier, is showed by the simulations. The feature of attenuation can be achieved only if the LCL filter properly damped, in this paper the damping process is carried out with a resistor connected series to filter capacitor. The effects of using L and LCL filter on unity power factor, line currents harmonic distortions and dc - link voltage are presented by the simulations.
Input-output linearization control of single-phase buck-boost power factor corrector
(2012-12-01) Sehirli E.; Altinay M.
In this paper, simulations of single - phase power factor corrector (PFC) that has buck-boost circuit topology under input - output linearization nonlinear control with current and voltage control are realized. Buck-boost converter is connected to ac grid by single phase diode bridge rectifier and it works in boundary conduction mode (BCM). For switching of single switched buck-boost converter, compared saw tooth with dc control signal (PWM) technique has been utilized and switching frequency adjusted to 100 kHz. Simulations are carried out with Matlab/Simulink. By the simulations, the effect of PFC buck-boost rectifier on unity power factor, line current harmonic distortion, the sinusoidality of line current and dc - link voltage are presented. © 2012 IEEE.
Simulation of three-phase voltage source pulse width modulated (PWM) LCL filtered rectifier based on input-output linearization nonlinear control
(2010-08-24) Şehirli E.; Altinay M.
Control of three - phase voltage source pulse width modulation (PWM) LCL filtered rectifier based on input - output linearization nonlinear control is realized. This control algorithm needs to transformation between a - b - c and d - q coordinates. In this paper, grid connection of rectifier which consists of six IGBT power switches, is provided through LCL filter and sinusoidal pulse width modulation (SPWM) technique which has 9 kHz switching frequency, is used for switching. All simulations are carried out with Matlab/Simulink. By the simulation results, line currents' harmonic distortions, and dc - link voltage and the obtaining of unity power factor are shown under load and reference changes. ©2010 IEEE.