摘要
提出将直流电机的双闭环控制方法应用于三电平PWM整流器上,建立了电压电流解耦框图,对解耦后的d,q轴电流进行了独立的PI控制。仿真和实验研究发现,该整流器不但能够有效地抑制谐波,电磁干扰(EMI)较小,而且可以实现单位功率因数运行,具有良好的动态性能和稳态性能,且自调节能力较强,鲁棒性很好。
A ordinary d,q coordinate decoupling mathematical model of the three-level PWM rectifier is established based on the double-loop control model of DC motor.A decoupling block diagram of voltage and current is set up.And after decoupling process,the current of coordinate is controlled independently.At last,the simulative, and experimental results verify that the rectifier not only can restrain harmonics and reduce EMI,realize unit power factor,but also has favorable dynamic, steady state per-formances and better robustness.
出处
《电力电子技术》
CSCD
北大核心
2008年第7期9-10,13,共3页
Power Electronics
基金
国家自然科学基金项目(50577025)
华东交通大学校立课题(06ZKDQ01)~~
关键词
整流器
仿真
脉宽调制/中点箝位
d
q坐标解耦
rectifier
simunation
pulse width modulation / neutral point clamped
d,q coordinate decoupling
