广东电力2017，Vol.30Issue(9)：70-74,5.DOI:10.3969/j.issn.1007-290X.2017.09.013
五电平NPC/H桥逆变器的调制策略
Modulating Strategy for Five-level NPC/H Bridge-type Converter
摘要
Abstract
On the basis of analyzing topology structure and working principles of the five-level NPC/H bridge-type converter, this paper designs strategies of carrier overlapping pulse width modulation (PWM)and three-stage space vector pulse width modulation (SVPWM)and introduces principles of these two modulating strategies. By simulation on Simulink software,it compares output characteristics of the converter under different modulation degrees and carrier frequencies. Conclusion indi-cates that level numbers of output voltage wave are related with modulation degrees and it is able to increase frequency of the main higher harmonic and reduce harmonic content by improving carrier frequency. An experimental platform was estab-lished with DSP+FPGA as the controller. Experimental results obtained indicate that this modulating strategy is feasible.关键词
五电平NPC/H桥逆变器/调制策略/载波层叠脉冲宽度调制/三段式空间矢量脉冲宽度调制/调制度Key words
five-level NPC/H bridge-type converter/modulating strategy/carrier overlapping pulse width modulation/three-stage space vector pulse width modulation/modulation degree分类
信息技术与安全科学引用本文复制引用
程隽,刘虎,解光庆,夏晨阳..五电平NPC/H桥逆变器的调制策略[J].广东电力,2017,30(9):70-74,5.基金项目
江苏省自然科学基金资助项目(BK20140204) （BK20140204）
