摘要
比较了国内外现有三相四桥臂逆变器控制方法的优缺点,分析了三相四桥臂逆变器的调制信号与输入直流电压之间的关系。在此基础上提出了一种基于三次谐波注入的新型PWM控制方法。仿真结果表明该谐波的注入不会影响输出电流,且该PWM控制方案使三相逆变器输出特性可满足任意要求,验证了该方案的正确性和有效性。
The control methods from domestic to overseas are compared,and then the relationship between modulating signal and input DC voltage is analyzed.Based on the research above,a method of PWM control with 3th harmonic is presented in addition for the four-legged three-phase inverter.Simulation and experiment results show that the output current could not be affected by the injection of harmonic,besides with the PWM control method promoted,the output characteristic of three-phase inverter is much better under arbitrary load.The result of experiment successfully verify the correctness and effectiveness of PWM control strategy promoted.
出处
《战术导弹技术》
2012年第5期103-107,共5页
Tactical Missile Technology
