Üç Fazlı Gerilim Kaynaklı Evirici için SDGM, ÜHDGM ve HDGM Tekniklerinin MATLAB/SİMULİNK ile Karşılaştırmalı Analizi

Bazı güç elektroniği devrelerinin kontrolünde darbe genişlik modülasyon (DGM) teknikleri büyük önem taşımaktadır. Mikroişlemci teknolojilerinin gelişmesi darbe genişlik modülasyon tekniklerinin çeşitlilik kazanmasına yol açmıştır. En yaygın kullanılan teknikleri sinüs DGM (SDGM), uzay vektör DGM (UVDGM), üçüncü harmonik DGM (ÜHDGM) ve histerisiz DGM (HDGM) olarak sıralayabiliriz. Bu tekniklerin bir birlerine olan avantaj ve dezavantajları bulunmaktadır. Bu çalışmada SDGM, ÜHDGM ve HDGM teknikleri MATLAB/SIMULINK ortamında üç fazlı gerilim kaynaklı bir eviriciye uygulanmıştır. 1 kW’lık bir omik yük üzerinde oluşan akım, gerilim grafikleri ile gerilimde meydana gelen toplam harmonik bozulumların(THB) karşılaştırılması yapılmıştır. Simülasyon sonuçlarından, HDGM yönteminde oluşan harmonik seviyenin IEEE 519 standartlarına en uygun olduğu görülmüştür.

Anahtar Kelimeler:

SDGM, UVDGM, ÜHDGM, HDGM, Matlab/Simulink, THB

A Comparative Analysis of SPWM, THIPWM and HPWM Techniques with MATLAB / SIMULINK for Three-Phase Voltage Source Inverter

Pulse width modulation (DGM) techniques are very important in the control of some power electronic circuits. The development of microprocessor technologies has led to the diversity of pulse width modulation techniques (PWM). We can list the most commonly used techniques as sinus PWM (SPWM), space vector PWM (SVPWM), third harmonic PWM (THIPWM) and hysteresis PWM (HPWM). These techniques have advantages and disadvantages. In this study, a three phase voltage source inverter was applied in the MATLAB / SIMULINK environment of SPWM, THIPWM and HPWM techniques. The current, voltage graphs on a 1 kW resistive load and the total harmonic distortion (THD) in the voltage are compared. Simulation results show that the level of harmonics generated by HPWM method is best suited to IEEE 519 standards.

Keywords:

SPWM, SVPWM, THIPWM, HPWM, Matlab/Simulink, THD,

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