滑模与PI调节三相AC/DC PWM变换器非线性控制  

Nonlinear Control of Three-Phase AC/DC PWM Converter based on Sliding Mode and PI Regulating

作　　者：万军[1] 马彦兵[1] 董昌文[1] 

机构地区：[1]贵州民族学院,贵州贵阳550025

出　　处：《电力电子技术》2007年第7期92-94,共3页Power Electronics

摘　　要：针对三相AC/DC PWM变换器,提出了非线性滑模直流输出电压控制和PI调节方式的输入电流调节方案。基于在同步d,q参考坐标系下的状态坐标变换,设计采用非线性滑模控制调节输出电压动态,使其跟踪线性参考模型;采用PI调节器调节d轴输入电流为零,以得到功率因数λ=1的控制。在提出的控制方案中,输出电压的瞬态动态可通过线性参考模型调节,参考模型具有理想的动态行为。实验结果验证了所提出的控制方案的有效性。In this paper,a nonlinear sliding-mode DC output voltage control and input current regulation using PI regulation for a three-phase AC/DC PWM converter are proposed.Based on the state coordinate transformed model representing the d-axis input current and output voltage dynamics in synchronous d-q reference frame,the nonlinear sliding-mode control was designed for the output voltage dynamics to track a linear reference model,and the PI regulator is designed to regulate the d-axis current to zero for unity power factor control.With the proposed control,the transient dynamics of the output voltage can be regulated through the design of a linear reference model,which has the desired dynamic behaviors.Experimental results demonstrate the validity of the proposed controller.

关 键 词：变换器 脉宽调制 滑模控制/PI调节 状态坐标变换 

分 类 号：TM46[电气工程—电器] TP214[自动化与计算机技术—检测技术与自动化装置]