Boost端耦合电感三管交错并联升降压电路研究
DOI:
作者:
作者单位:

1.南通理工学院 电气与能源工程学院;2.江苏海洋大学 电子工程学院 江苏 连云港

作者简介:

通讯作者:

基金项目:

国家自然科学基金资助项目(51707078);南通理工学院科学研究项目(科研ZX202110)


Research on Interleaved Three-Switch Buck-Boost Converter with Co-Directional Coupling Inductor at Boost Side
Author:
Affiliation:

1.School of Energy and Power Engineering,Nantong Institute of Technology;2.School of Electronic Engineering,Jiangsu Ocean University

Fund Project:

Project supported by the financial support of National Natural Science Foundation of China (51707078); Science and Technology Foundation of Nantong Institute of Technology (ZX202110)

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
    摘要:

    双管Buck-Boost变换器在升降压场合被广泛应用,虽然其控制和调制模式较多,但是其通常仍然工作在硬开关管状态,而且交错并联时控制电路较为复杂。本文利用同向耦合电感的特点给出了Boost端同向耦合电感三管交错并联Buck-Boost电路及控制方法。文中首先分析了大耦合系数条件下耦合电感在开关管切换过程中的耦合过程,并据此详细地分析电路基本工作原理,得出在自感电流断续模式下该电路具有利用小占空比获得大占空比功能的占空比扩展和Boost部分功率器件软开关功能,从而避免两相交错并联控制电路中同步电路和均流电路,大大地简化控制电路设计。最后,仿真和实验结果表明文中分析是正确可行的。

    Abstract:

    Two-switch Buck-Boost converter has been widely used in step-down voltage applications; however, its hard switching has a bad effect on the efficiency under existing control or modulate methods. In order to obtain soft switching and simplify the control circuit, a three-switch interleaved Buck-Boost converter is proposed in this paper. The presented converter is derived from a two-switch Buck-Boost converter and a co-directional coupling inductor at boost side. Firstly, coupling process is analyzed under a large coupling coefficient. Then, the converter operating principle is given in detail, and it is concluded that the expended duty cycle and soft switching at boost side power switches can be achieved under DCM of two self-inductance currents. Thus, a very simple control circuit based a single dual-PWM chip maybe accepted, which does not include a synchronous circuit and a current-sharing circuit. Finally, the simulation and experimental results are given to verify the analysis results.

    参考文献
    相似文献
    引证文献
引用本文
分享
文章指标
  • 点击次数:
  • 下载次数:
历史
  • 收稿日期:2021-10-12
  • 最后修改日期:2021-12-09
  • 录用日期:2021-12-20
  • 在线发布日期: