Title :
Hybrid PWM scheme for the grid inverter
Author :
Yangfan Zhang ; Cheng Yan ; Shenjian Zou ; Dehong Xu
Author_Institution :
Coll. of Electr. Eng., Zhejiang Univ., Hangzhou, China
Abstract :
A hybrid PWM scheme for the grid inverter is investigated, which combines the merits of space-vector PWM (SVM) and Selected Harmonic Elimination PWM (SHEPWM). SHEPWM is adopted at steady state while SVM is adopted to achieve better dynamic performance at grid fault. A transition strategy between these two PWM schemes is proposed, which achieves smooth and quick transition by optimizing the switching state during transition. Finally the proposed transition strategy for the hybrid PWM scheme is validated by the experiment.
Keywords :
PWM invertors; power grids; power system faults; power system harmonics; grid fault; grid inverter; hybrid PWM scheme; selected harmonic elimination PWM; space-vector PWM; Harmonic analysis; Integrated circuits; Inverters; Pulse width modulation; Support vector machines; Selected Harmonic Elimination PWM; hybrid PWM scheme; space-vector PWM; transition strategy;
Conference_Titel :
Power Electronics for Distributed Generation Systems (PEDG), 2014 IEEE 5th International Symposium on
Conference_Location :
Galway
DOI :
10.1109/PEDG.2014.6878635
