基于遗传算法提高超声波电源功率因数的研究  

Improved Power Factor in the Ultrasonic Source Using Genetic Algorithms

作　　者：屈百达 裴玖玲 

机构地区：[1]江南大学系统工程研究所,江苏无锡214122

出　　处：《电气传动》2009年第7期32-35,共4页Electric Drive

基　　金：国家自然科学基金项目(No.60574051)

摘　　要：在SPWM的超声波电源中,输出电压常出现畸变,提出了一种使用遗传运算规则提高超声波电源功率因数(消除高次谐波)的方法。为了获得最佳开关角,叙述了计算方法步骤,通过离线计算,可以得到消除超声波电源中输出电压的3次、5次、7次谐波的最优开关角。运用Matlab软件的仿真波形和实用电源实验波形,都表明了遗传运算规则提高功率因数有缩减计算量,快速收敛和保证最优等优点。The method for voltage harmonic elimination in a pulse width modulated（PWM）uitrasonic source by using genetic algorithms（GAs）was proposed. Explained the resolution method procedure of the non-linear equation system in order to achieve the appropriate switching angle. The best switching angles are calculated off-line to eliminate the third, fifth and seventh harmonics. The results of experiment and simulation all verifiy that the genetic algorithm method has some advantages such as a reduced computational burden, faster convergence and guarantee global optima in most cases.

关 键 词：遗传算法 超声波电源 选择性谐波消除 

分 类 号：TM714[电气工程—电力系统及自动化]