摘要
分析了带微分环节的电压滞环的变环宽的原理,指出带微分滞环控制的脉宽调制(PWM)变换器可作为理想的可控电压源。针对动态电压恢复器(DVR)与串联有源电力滤波器(SAPF)2种不同的电压型补偿,提出分别采用基于Park变换的常规电压检测和基于Park变换的改进型电压检测算法,并都取得了良好的效果。通过对SAPF及DVR控制的仿真,证明带微分环节的电压滞环应用于电压型补偿具有控制简单及跟踪精度高等优点。
The paper analyzed the voltage hysteresis with differentiation elements,and pointed out that the PWM converter with differentiation hysteresis controls can be used as the ideal voltage source. According to the two different kinds of voltage compensation, dynamic voltage restorer （DVR） and series active power factors （SAPF）, the paper presents general and improved voltage detection methods based on Park transformation. Simulations of SAPF and DVR control show that the voltage hysteresis control with differentiation element has merits of simple control and high tracking accuracy.
出处
《江苏电机工程》
2007年第1期21-24,共4页
Jiangsu Electrical Engineering
关键词
电压滞环
电压型补偿
微分环节
PARK变换
voltage hysteresis
voltage compensation
differentiation element
Park transform
