摘要
提出一种内外环相互解耦的控制方法,解决了传统三相电压型脉宽调制(PWM)整流器(TPVSR)基于电压电流双闭环控制所产生的建模复杂、内外环相互耦合、内外环比例积分(PI)参数设计依赖于开关变流器线性化模型的问题。该控制方法在TPVSR的d,q同步坐标模型中引入电压与电流中间变量,使得内外环模型在加入串联补偿之后变得准确易控。不仅实现了电流在d,q坐标系下的解耦,也使得电压外环与电流内环相互解耦,因此内外环可单独设计,大大简化了控制器设计,无需变流器的线性化模型即可准确地设计PI参数。仿真和实验表明,该控制策略能使整流器功率因数接近1,直流侧电压纹波小,交流电流畸变率低,动静态性能很好。
Traditional three-phase voltage source pulse width modulation （PWM） rectifier （TPVSR） based on voltage and current double closed-loop control is complex.The inside loop and outside loop of traditional method are mutual coupling.The proportional integral（PI） parameter of voltage outer loop and current inner loop design are depended on the linear model of the switch converter.To solve these problems, a new control method is proposed.Introducing some intermediate variables for voltage and current in TPVSR d, q synchronous coordinate model, make the inner and outer loop model become accurate and easy to control after joining series compensation link.This control method has realized the current in the d, q system decoupling, makes the voltage outer loop and current inner loop decoupled from each other.Greatly simplify the controller design.Don ＇t need a converter linear model when design PI parameters.Simulation and experiment show that the control strategy can make the power factor close to 1, direct current side voltage ripple small, alternating current distortion rate low, and has a good dynamic and static performance.
作者
许加柱
王涛
崔贵平
XU Jia-zhu;WANG Tao;CUI Gui-ping(Hunan University,Changsha 410082,China)
出处
《电力电子技术》
CSCD
北大核心
2018年第11期88-91,95,共5页
Power Electronics
基金
国家自然科学基金(51477044)~~
关键词
整流器
功率因数
解耦
rectifier
power factor
decoupling
