Analyzing of Surplus Harmonics in Selective Harmonic Elimination Technology

作者:Zhang Wenyi*; Zhang Qiang; Jiang Liao
来源:3rd World Congress in Applied Computing, Computer Science, and Computer Engineering (ACC 2011), China,Sichuan,Aba Zang and Qiang Autonomous Prefecture,Aba, 2011-07-16 to 2011-07-17.

摘要

Selective harmonic elimination technique can theoretically remove arbitrary time harmonics, but be subjected to switching angles beginning value regulation selection and the switch speed of the power spare part of restriction, inevitable existence surplus high time harmonics. The surplus harmonics exist with the form of harmonics group, between close harmonics groups window of the harmonics value close zero exist. The surplus harmonics will influence to use electric equipments stability and pass analysis surplus harmonics distribute regulation can understand surplus harmonics get disadvantageous influence to electric equipments. Factors Influencing surplus harmonics distribute regulation in selective harmonic elimination technique mainly have the selections of initial value of witching angles, number of switching angles, fundamental wave amplitude etc. By a theory calculation and simulation, surplus harmonics are analyzed in selective harmonic elimination technique, thus established theory foundation for practical application of selective harmonic elimination technique.