摘要
针对特定消谐式逆变器开关角度难于求解的问题,提出了一种基于约束条件下n维极值复形调优法的开关角度求解方法,分析了目标函数和约束条件的设计方法.该算法对开关角度初值的选取只需考虑约束条件,大大增加了开关角度初值的取值范围;求解过程中不存在解发散或奇异无解问题,与迭代法解非线性超越方程组相比可靠性更高;通过约束条件的限制,使求解过程自动消除了可能出现的窄脉冲;通过目标函数和加权因子可灵活的进行开关角度优化.算例和实验结果验证了方法的正确性和有效性.
Since method of solution to the solution to switching angles for selective harmonic elimination inverter is difficult, a switching angles based on complex optimal method with constrain conditions was presented,and the design method of objective function and constrain conditions was analyzed. This method enlarges the range of initial switching angles, only considering constrain conditions. It is more reliable compared with solving nonlinear transcendental equations, there is no divergence or singular problem. The narrow pulse is eliminated through restricting constrain conditions in the process of solving switching angles. The optimization for switching angles is available though designing objective function and weighted factor. The results of calculation and experiment show that the method of solving switching angles proposed is correctness and validity.
出处
《北京航空航天大学学报》
EI
CAS
CSCD
北大核心
2008年第9期1028-1031,共4页
Journal of Beijing University of Aeronautics and Astronautics
基金
国家自然科学基金资助项目(50477002)
航空科学基金资助项目(05F51021)
关键词
逆变器
特定消谐
非线性超越方程组
复形调优法
开关角度
inverter
selective harmonic elimination
nonlinear transcendental equations
complex optimal method
switching angle
