Title :
Hybrid PWM Scheme for the Grid Inverter
Author :
Yangfan Zhang ; Dehong Xu ; Cheng Yan ; Shenjian Zou
Author_Institution :
Coll. of Electr. Eng., Zhejiang Univ., Hangzhou, China
Abstract :
A hybrid pulsewidth modulation (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 simulation and the experiment.
Keywords :
PWM invertors; SHEPWM; SVM; grid fault; grid inverter; hybrid PWM scheme; hybrid pulsewidth modulation scheme; selected harmonic elimination PWM; space-vector PWM; transition strategy; Harmonic analysis; Inverters; Pulse width modulation; Steady-state; Support vector machines; Switches; Hybrid PWM scheme; Hybrid pulsewidth modulation (PWM) scheme; Selected Harmonic Elimination PWM; Switching state; Transition strategy; selected harmonic elimination PWM (SHEPWM); space-vector PWM; space-vector PWM (SVM); switching state; transition strategy;
Journal_Title :
Emerging and Selected Topics in Power Electronics, IEEE Journal of
DOI :
10.1109/JESTPE.2015.2451159
