Suppressing the side effect of the grid background harmonics on grid inverter with selective harmonic elimination PWM

Author

Shenjian Zou ; Cheng Yan ; Yangfan Zhang ; Wenjie Chen ; Dehong Xu

Author_Institution

Coll. of Electr. Eng., Zhejiang Univ., Hangzhou, China

fYear

2014

fDate

5-8 Nov. 2014

Firstpage

508

Lastpage

513

Abstract

Due to the presence of the low-order background voltage harmonics in the grid, it will cause higher current harmonics in the AC side of the grid inverter with Selective Harmonic Elimination PWM (SHEPWM). Therefore the grid inverter with traditional SHEPWM has not prevailed since it is unable to overcome the background harmonics of the utility and satisfy the power quality requirement. In this paper, the effect of the background harmonics is analyzed. Then a control scheme to suppress the grid background harmonics effect on grid inverter with SHEPWM is presented. Finally the feasibility of this method is verified by experiment.

Keywords

PWM invertors; power grids; power system control; power system harmonics; AC side; SHEPWM; control scheme; grid inverter; higher current harmonics; low-order grid background voltage harmonics; power quality requirement; selective harmonic elimination PWM; side effect suppression; Bridge circuits; Equations; Harmonic analysis; Inverters; Power harmonic filters; Pulse width modulation; Switches; SHEPWM; current harmonic; grid background harmonics; grid inverter;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics and Application Conference and Exposition (PEAC), 2014 International

Conference_Location

Shanghai

Type

conf

DOI

10.1109/PEAC.2014.7037908

Filename

7037908