Title :
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
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;
Conference_Titel :
Electronics and Application Conference and Exposition (PEAC), 2014 International
Conference_Location :
Shanghai
DOI :
10.1109/PEAC.2014.7037908
