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Improved linear model of self oscillating systems such as relay feedback current controllers

机译:自激系统的改进线性模型,例如继电器反馈电流控制器

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摘要

In this paper, some analytical tools for the study of self-oscillating systems such as current-controlled static converters using pulse-width modulators are presented. These tools, based on the Tsypkin locus, concern the prediction of the switching frequency of the power stage and the characterization of its input-output behavior by an equivalent linear model. These first results, that can be used for any value of the duty cycle, are extended to the construction of the frequency response of the closed-loop system, where the power stage is replaced by a constant gain, associated with a constant time delay. This study is validated by experiments using a classical hysteresis current controller and a recent current controller without hysteresis. The obtained results are particularly useful for applications such as active filtering or high precision power supplies, where the frequency of the signal to follow can be close to one fifth of the switching frequency.
机译:本文提出了一些用于研究自激振荡系统的分析工具,例如使用脉宽调制器的电流控制静态转换器。这些基于Tsypkin轨迹的工具涉及功率级开关频率的预测及其等效线性模型的输入输出行为特征。这些可以用于任何占空比值的第一结果扩展到闭环系统的频率响应的构造,在该系统中,功率级由恒定增益代替,并具有恒定的时间延迟。通过使用经典磁滞电流控制器和最新的无磁滞电流控制器的实验验证了此研究。所获得的结果对于诸如有源滤波或高精度电源之类的应用特别有用,在这些应用中,要跟随的信号的频率可以接近开关频率的五分之一。

著录项

  • 来源
    《Control Engineering Practice》 |2010年第8期|P.927-935|共9页
  • 作者单位

    IREENA (Institut de Recherche en Electrotechnique et Electronique de Nantes Atlantique), CRTT, 37 Bd de I'Universite, BP 406, 44602 Saint-Nazaire cedex, France;

    rnIREENA (Institut de Recherche en Electrotechnique et Electronique de Nantes Atlantique), CRTT, 37 Bd de I'Universite, BP 406, 44602 Saint-Nazaire cedex, France;

    rnIREENA (Institut de Recherche en Electrotechnique et Electronique de Nantes Atlantique), CRTT, 37 Bd de I'Universite, BP 406, 44602 Saint-Nazaire cedex, France;

    rnIREENA (Institut de Recherche en Electrotechnique et Electronique de Nantes Atlantique), CRTT, 37 Bd de I'Universite, BP 406, 44602 Saint-Nazaire cedex, France;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    continuous-time control; self-oscillation; current regulators; pulse-width modulation; feedback linearization; dynamic modeling;

    机译:连续时间控制;自激振荡现行监管机构;脉冲宽度调制;反馈线性化;动态建模;
  • 入库时间 2022-08-18 02:04:40

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