Title :
A modified harmonic mitigation analysis using Third Harmonic Injection PWM in a multilevel inverter control
Author :
Colak, Ilhami ; Bayindir, Ramazan ; Kabalci, Ersan
Author_Institution :
Dept. of Electr.-Electron. Eng., Gazi Univ., Ankara, Turkey
Abstract :
A modified Third Harmonic Injection PWM (THI-PWM) modulator that reduces output harmonics has been presented in this paper. The modulator is combined with harmonic injection and phase shifting parts in Simulink design. The harmonic injection ratios have been analysed according to harmonic amplitude ratio of third harmonic to fundamental amplitude. The designed modulator is capable to minimize the injected harmonic ratio in order to increase the modulation index over 1.15 limit of regular THI-PWM control scheme. The proposed VSI in this paper supplies 7-level line voltages and 0.25% THDi ratio at 5 kHz while the modulation index is 1.2.
Keywords :
PWM invertors; harmonic analysis; Simulink design; modified harmonic mitigation analysis; modified third harmonic injection PWM modulator; multilevel inverter control; pulse width modulation; voltage source inverters; Harmonic analysis; Inverters; Phase modulation; Pulse width modulation; Switches; Switching frequency; Harmonics; Multilevel converters; Pulse Width Modulation (PWM); Third Harmonic Injection PWM (THI-PWM); Voltage Source Inverters (VSI);
Conference_Titel :
Power Electronics and Motion Control Conference (EPE/PEMC), 2010 14th International
Conference_Location :
Ohrid
Print_ISBN :
978-1-4244-7856-9
DOI :
10.1109/EPEPEMC.2010.5606607
