一种新的SHEPWM三电平逆变系统的仿真和实验研究  

Simulation and Experimental Research on SHEPWM Technique Applied to Three-Level Inverter

作　　者：胡存刚[1] 王群京[2] 李国丽[1] 夏秋实[1] 

机构地区：[1]合肥工业大学电气与自动化工程学院,合肥230009 [2]安徽大学电子科学与技术学院,合肥230039

出　　处：《系统仿真学报》2008年第16期4425-4428,共4页Journal of System Simulation

基　　金：安徽省“十一五”科技攻关资助项目(06012143H)

摘　　要：针对中点钳位型三电平逆变系统SHEPWM开关角度的求解问题,提出了基于混沌蚁群算法的三电平中点钳位型逆变系统的SHEPWM优化方法。蚁群算法在求解SHEPWM非线性超越方程组时不需要求解方程特定的初值,而变尺度混沌算子融合到蚁群算法之中,可以有效防止算法陷入局部最优解,提高计算精度。仿真和实验结果证明了基于混沌蚁群算法的三电平NPC逆变系统消谐模型的有效性。An optimization method of generating SHEPWM switching patterns using chaotic ant colony algorithm applied to three-level NPC inverter was introduced. This method needed not to determine the initial values when solving the SHEPWM nonlinear and transcendental equations. A scaleable chaotic search algorithm was embedded into a modified version of a special ant colony optimization algorithm. This scaleable search technology helped ant colony algorithm avoiding dropping into local optima, and improving the accuracy of solution. Simulated and experimental results are given to validate the method.

关 键 词：三电平逆变器 特定谐波消除 脉冲宽度调制 混沌蚁群算法 

分 类 号：TM464[电气工程—电器]