一种航空三相中频PWM整流器SAPWM实现方法  

A Method for Realizing SAPWM of Three-phase Middle-frequency PWM Rectifier

作　　者：邓翔[1] 韦徵[1] 李臣松[1] 龚春英[1] 

机构地区：[1]南京航空航天大学,自动化学院,江苏南京210016

出　　处：《电力电子技术》2012年第9期27-29,共3页Power Electronics

摘　　要：与传统无源滤波和多脉冲整流技术相比,脉宽调制(PWM)整流可实现输入电流和输出电压的闭环控制,代表了高性能AC/DC变换器的发展方向。近年来,PWM整流技术有了很大进展,已得到广泛应用。结合航空整流技术要求,提出了一种新颖的航空三相中频PWM整流器鞍形波脉宽调制(SAPWM)的实现方法,使该变换器能在中频下很好地工作。采用一种新颖的3次谐波注入法实现SAPWM,达到与空间矢量脉宽调制(SVPWM)一样的效果,能够提高直流电压利用率并减少电流谐波含量。实验结果证明了所提出方法的正确性。Compared with the technique of passive filter and multi-pulse rectifier, PWM rectifier achieves closed-loop control of the input current and output voltage, and leads the development trend of high performance AC/DC converter. Now, great progresses are made in the research of PWM rectifier, and PWM rectifiers are used widely.The systematic study is carried out on a novel method for realizing saddle pulse width modulation （SAPWM） of three-phase mid,tiefrequency PWM rectifier for aviation applications.Using SAPWM can achieve the aim of improving the utilities of DC bus voltage and decreasing the harmonic current by using the third harmonic injection.Experiment is presented to verify the proposed theories.

关 键 词：整流器 鞍形波脉宽调制 谐波注入法 

分 类 号：TM461[电气工程—电器]