华南理工大学学报(自然科学版) ›› 2013, Vol. 41 ›› Issue (4): 33-38.doi: 10.3969/j.issn.1000-565X.2013.04.006

• 动力与电气工程 • 上一篇    下一篇

并联谐振变换器的电路特性分析

张治国1 谢运祥1 袁兆梅2   

  1. 1.华南理工大学 电力学院,广东 广州 510640; 2.福建龙净环保股份有限公司,福建 龙岩 364000
  • 收稿日期:2011-09-23 修回日期:2012-09-11 出版日期:2013-04-25 发布日期:2013-03-01
  • 通信作者: 张治国(1977-),男,博士,主要从事高频谐振变换器的建模与控制研究. E-mail:zhang1569@126.com
  • 作者简介:张治国(1977-),男,博士,主要从事高频谐振变换器的建模与控制研究.
  • 基金资助:

    国家火炬计划项目( 2007GH060026)

Analysis of Circuit Characteristics of Parallel Resonant Converter

Zhang Zhi-guo1 Xie Yun-xiang1 Yuan Zhao-mei2   

  1. 1.School of Electric Power,South China University of Technology,Guangzhou 510640,Guangdong,China;2.Fujian Longking Co.,Ltd.,Longyan 364000,Fujian,China
  • Received:2011-09-23 Revised:2012-09-11 Online:2013-04-25 Published:2013-03-01
  • Contact: 张治国(1977-),男,博士,主要从事高频谐振变换器的建模与控制研究. E-mail:zhang1569@126.com
  • About author:张治国(1977-),男,博士,主要从事高频谐振变换器的建模与控制研究.
  • Supported by:

    国家火炬计划项目( 2007GH060026)

摘要: 为全面揭示具有电容型滤波器的并联谐振变换器的电路特性,首先,对并联谐振变换器的两种工作模式进行了原理分析,建立了相应的数学模型.然后,讨论了两种工作模式下并联谐振变换器的电路特性,指出在电路等效输出电压小于输入电压时,输入电流线性变化.最后,推导了可用于电路元件参数设计的表达式,提出了满足设计需求的并联谐振变换器谐振元件参数的设计方法.仿真结果表明,文中分析与设计方法是正确的.

关键词: 并联谐振, 电路特性, 工作模式, 电容型输出滤波器, 数学建模

Abstract:

In order to fully reveal the circuit characteristics of the parallel resonant converter with capacitive outputfilter,the principle of the two operational modes of the converter is analyzed and the corresponding mathematicalmodels are constructed.Then,the circuit characteristics of the converter in the two operating modes are discussedand a linear variation of the input current is revealed when the equivalent output voltage is less than the input one.Finally,some expressions are deduced to design circuit component parameters,and a design method is proposed toobtain component parameters meeting the application requirements of the parallel resonant converter.Simulated resultsindicate that the above analysis and the proposed design method are both correct.

Key words: parallel resonance, circuit characteristic, operating mode, capacitive output filter, mathematical model-ing