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.
出处
《电力电子技术》
CSCD
北大核心
2010年第10期51-53,共3页
Power Electronics
关键词
整流器
稳态矢量
脉宽调制
直接电流控制
rectifier
steady state vector
pulse width modulation
direct current control
