单相全桥PWM整流器的直接电流控制技术研究  

The Research of Single-phase Full-bridge PWM Rectifier Based on Direct Current Control Technology

作　　者：李涛丰[1] 欧阳晖[1] 熊健[1] 张凯[1] 

机构地区：[1]华中科技大学,电气与电子工程学院,湖北武汉430074

出　　处：《电力电子技术》2010年第10期51-53,共3页Power Electronics

摘　　要：分析了采用IGBT全控型开关管的单相全桥整流电路及其相应的数学模型,根据稳态矢量关系,指出要实现整流器的单位功率因数控制,关键在于控制网侧电流。给出了PI调节器的控制结构框图,分别对电压外环和电流内环的PI调节器参数进行了设计,并采用Matlab/Simulink对整个控制系统进行建模和仿真验证。最后制作了3 kW的小样机进行实验,实验结果表明双闭环PI调节器能很好地满足整流器控制系统的稳定性和动态性要求。The circuit and corresponding mathematic model of single-phase PWM rectifier using IGBT as switches are analyzed,under steady state vector relationship,the key which achieve unity power factor is to control grid-side cur-rent.The controllable structural chart is derived,and the PI adjustor of the current and voltage loops is designed re-spectively.Adopting the method based on the Matlab/Simulink blocks to carry out modeling and simulation for the control system.A 3 kW prototype is produced,the simulation and experimental results educe that both the PI adjustors can well satisfy the steady and dynamic demands of the control system for the rectifier.

关 键 词：整流器 稳态矢量 脉宽调制 直接电流控制 

分 类 号：TM461[电气工程—电器]