摘要
为了提高中压大功率PWM整流器出力,需要降低PWM开关频率,但将造成PWM整流器id、iq电流分量耦合严重的现象。为解决这一问题,在对两电平PWM整流器进行复矢量信号建模的基础上,设计新颖的基于复矢量的电流调节器,该调节器能在低开关频率下实现对网侧电流d、q分量的有效解耦。Matlab仿真及DSP实验结果验证了本设计方法的可行性。
High-power PWM rectifiers for medium voltage applications operate at low switching frequency to keep the dynamic losses at permitted level, however, it brings about a heavy cross-coupling between the current components id and iq. To overcome this problem, a novel current controller with complex state variables is proposed. This kind of current controller which is based on the PWM VSR model with complex state variables can realize decoupling between id and iq. The simulation and experimental results verify the availability of the novel current controller at low switching frequency.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2011年第21期25-31,共7页
Proceedings of the CSEE
基金
国家自然科学基金项目(51077124)
江苏省2009年度普通高校研究生科研创新计划(CX09B_113Z)~~
关键词
低开关频率
复矢量
电流调节器
PWM整流器
耦合
low switching frequency
complex statevariables
current controller
PWM rectifier
cross-coupling
