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动态参考电流控制三态Boost变换器的性能分析

周国华 曾绍桓 周述晗 毛桂华

周国华, 曾绍桓, 周述晗, 毛桂华. 动态参考电流控制三态Boost变换器的性能分析[J]. 西南交通大学学报, 2020, 55(2): 435-441, 458. doi: 10.3969/j.issn.0258-2724.20180005
引用本文: 周国华, 曾绍桓, 周述晗, 毛桂华. 动态参考电流控制三态Boost变换器的性能分析[J]. 西南交通大学学报, 2020, 55(2): 435-441, 458. doi: 10.3969/j.issn.0258-2724.20180005
ZHOU Guohua, ZENG Shaohuan, ZHOU Shuhan, MAO Guihua. Performance Analysis of Tri-state Boost Converter with Dynamic Reference Current Control[J]. Journal of Southwest Jiaotong University, 2020, 55(2): 435-441, 458. doi: 10.3969/j.issn.0258-2724.20180005
Citation: ZHOU Guohua, ZENG Shaohuan, ZHOU Shuhan, MAO Guihua. Performance Analysis of Tri-state Boost Converter with Dynamic Reference Current Control[J]. Journal of Southwest Jiaotong University, 2020, 55(2): 435-441, 458. doi: 10.3969/j.issn.0258-2724.20180005

动态参考电流控制三态Boost变换器的性能分析

doi: 10.3969/j.issn.0258-2724.20180005
基金项目: 国家自然科学基金项目(61771405,61371033);全国优秀博士学位论文作者专项资金(201442)
详细信息
    作者简介:

    周国华(1983—),男,教授,博士生导师,研究方向为开关变换器调制与控制技术、数字控制技术、动力学建模与分析,E-mail:ghzhou-swjtu@163.com

  • 中图分类号: TM461

Performance Analysis of Tri-state Boost Converter with Dynamic Reference Current Control

  • 摘要: 为了提高工作于伪连续导电模式(pseudo continuous conduction mode,PCCM)的三态Boost变换器的效率、负载范围和瞬态响应性能,研究了一种动态参考电流(dynamic reference current,DRC)控制策略. 详细分析了DRC控制三态Boost变换器的工作原理,并比较了采用恒定参考电流(constant reference current,CRC)控制和DRC控制的三态Boost变换器的效率和负载瞬态响应性能,分别推导了它们的负载范围表达式,最后,通过实验对理论分析进行验证. 研究结果表明:与CRC控制相比,DRC控制三态Boost变换器的轻载效率提高了14%;在全负载范围内均能工作于PCCM模式,负载范围宽;负载减轻和增加时,调节时间分别减少了37.5%和32.0%,电压超调量分别减小了69.7%和61.9%,瞬态响应性能好.

     

  • 图 1  DRC控制三态Boost变换器

    Figure 1.  DRC controlled tri-state Boost converter

    图 2  负载减轻后电感电流的稳态波形示意

    Figure 2.  Steady-state waveforms of inductor current after the load decreases

    图 3  负载增加后电感电流的稳态波形示意

    Figure 3.  Steady-state waveforms of inductor current after the load increases

    图 4  CRC控制三态Boost变换器的稳态实验波形

    Figure 4.  Experimental steady-state waveforms of CRC controlled tri-state Boost converter

    图 5  DRC控制三态Boost变换器的稳态实验波形

    Figure 5.  Experimental steady-state waveforms of DRC controlled tri-state Boost converter

    图 6  CRC控制和DRC控制三态Boost变换器的效率曲线

    Figure 6.  Efficiency curves of CRC controlled and DRC controlled tri-state Boost converters

    图 7  R = 12 Ω的稳态实验波形

    Figure 7.  Experimental steady-state waveforms with R = 12 Ω

    图 8  CRC控制三态Boost变换器的负载瞬态实验波形

    Figure 8.  Experimental load transient waveforms of CRC controlled tri-state Boost converter

    图 9  DRC控制三态Boost变换器的负载瞬态实验波形

    Figure 9.  Experimental load transient waveforms of DRC controlled tri-state Boost converter

    表  1  三态Boost变换器参数

    Table  1.   Parameters of the tri-state Boost converter

    参数物理量取值
    Vg 输入电压/ V 10
    Vo 输出电压/ V 25
    L 电感/μH 270
    C 电容/μF 470
    R 负载电阻/Ω 12.5~25.0
    T 开关周期/μs 20
    Idc 谷值参考电流/ A 5
    k1 iL增益系数 0.5
    k2 io增益系数 0.5 × 2.5
    下载: 导出CSV

    表  2  三态Boost变换器负载瞬态性能

    Table  2.   Load transient performance of tri-state boost converter

    控制方法调节时间/ms超调量/V
    减载加载减载加载
    电压型CRC13.610.03.32.1
    电压型DRC 8.5 6.81.00.8
    下载: 导出CSV
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出版历程
  • 收稿日期:  2018-01-03
  • 修回日期:  2018-06-01
  • 网络出版日期:  2018-06-06
  • 刊出日期:  2020-04-01

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