摘要
PWM整流器是一种高功率因数、低噪音静止变流器。采用类似于交流电机磁链观测的方法构造出虚拟的电网磁链矢量,作为PWM整流器矢量控制中的定向矢量,可以达到取消交流侧电网电压传感器、降低PWM整流器硬件成本的目的。提出了准确观测虚拟电网磁链的方法,解决了PWM整流器无电压传感器运行的关键问题。
PWM rectifier is a kind of converter with high power factor and low noises. A virtual line-fluxlinkage vector can be constructed similarly to the observation of AC motor flux linkage, which may serve as the oriented vector in the vector control of the PWM rectifier instead of the line voltage vector. As a result, the line voltage sensors will be eliminated and the costs of PWM rectifier can be reduced. The key problem of the virtual line-flux-linkage vector oriented control of the PWM rectifier without line voltage sensors was resolved through observing the virtual line-flux-linkage accurately.
出处
《电气传动》
北大核心
2009年第10期27-30,共4页
Electric Drive
