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

fYear

2010

fDate

6-8 Sept. 2010

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);

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Motion Control Conference (EPE/PEMC), 2010 14th International

Conference_Location

Ohrid

Print_ISBN

978-1-4244-7856-9

Type

conf

DOI

10.1109/EPEPEMC.2010.5606607

Filename

5606607