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基于平均开关模型的变频电源小信号建模

发表时间:2015-08-31  浏览量:1604  下载量:491
全部作者: 乔之勇,彭仁明,胥勋涛,何彦杉
作者单位: 绵阳职业技术学院信息工程系;绵阳师范学院物理与电子工程学院;华南理工大学自动化科学与工程学院
摘 要: 三相数字化变频电源为非线性控制系统,为使三相变频电源控制精度达到指标要求,这里采用平均开关模型法对变频电源进行小信号动态建模,为变频电源系统控制器和补偿网络的设计提供了计算依据。平均开关模型是通过电路变换求得小信号交流模型的一种线性化建模方法,具有直观、使用方便等优点。研究利用该建模方法为三相变频电源的BOOST 变换器和三相PWM 逆变器等部分进行了小信号模型的建立,利用该数学模型较好地达到了控制精度的要求。
关 键 词: 系统建模;变频电源小信号模型;平均开关模型法;BOOST 变换器模型;逆变器模型
Title: Small signal modeling of variable frequency power supply based on averaged switch model
Author: QIAO Zhiyong, PENG Renming, XU Xuntao, HE Yanshan
Organization: Department of Information Engineering, Mianyang Vocational and Technical College; School of Physics & Electronic Engineering, Mianyang Normal University; School of Automation Science & Engineering, South China University of Technology
Abstract: Three phase digital variable frequency power supply is a nonlinear control system. In order to make the three-phase inverter power supply reach the target requirements of precision control. In this paper, we build a small signal dynamic modeling for variable frequency power supply using the averaged switch model, which provides the basis of calculation for the design of variable frequency power supply system controller and the compensation network. The averaged switch model is a modeling method for linear AC small signal model which is obtained through the circuit transformation. It has the advantages of visual and convenient. Small signal model of three-phase BOOST converter and PWM inverter is established by this method. By using the mathematics model and better meet the requirements of control precision.
Key words: system modeling; small signal modeling of variable-frequency-power-supply; averaged switch model; BOOST converter model; inverter model
发表期数: 2015年8月第16期
引用格式: 乔之勇,彭仁明,胥勋涛,等. 基于平均开关模型的变频电源小信号建模[J]. 中国科技论文在线精品论文,2015,8(16):1730-1736.
 
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