Hybrid PWM Scheme for the Grid Inverter

作者：Zhang, Yangfan^*; Xu, Dehong; Yan, Cheng; Zou, Shenjian

来源：IEEE Journal of Emerging and Selected Topics in Power Electronics, 2015, 3(4): 1151-1159.

DOI：10.1109/JESTPE.2015.2451159

• Hybrid pulsewidth modulation (PWM) scheme
• selected harmonic elimination PWM (SHEPWM)
• space-vector PWM (SVM)
• switching state
• transition strategy

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.

• 出版日期2015-12
• 单位浙江大学