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星载开关电源的电磁干扰抑制技术

周莉 马晓勇 武林 阎敬业 安军社

周莉, 马晓勇, 武林, 阎敬业, 安军社. 星载开关电源的电磁干扰抑制技术[J]. 空间科学学报, 2023, 43(1): 183-189. doi: 10.11728/cjss2023.01.210922100
引用本文: 周莉, 马晓勇, 武林, 阎敬业, 安军社. 星载开关电源的电磁干扰抑制技术[J]. 空间科学学报, 2023, 43(1): 183-189. doi: 10.11728/cjss2023.01.210922100
ZHOU Li, MA Xiaoyong, WU Lin, YAN Jingye, AN Junshe. Electromagnetic Interference Suppression Technology for Switching Converters of Onboard Secondary Power Supply (in Chinese). Chinese Journal of Space Science, 2023, 43(1): 183-189 doi: 10.11728/cjss2023.01.210922100
Citation: ZHOU Li, MA Xiaoyong, WU Lin, YAN Jingye, AN Junshe. Electromagnetic Interference Suppression Technology for Switching Converters of Onboard Secondary Power Supply (in Chinese). Chinese Journal of Space Science, 2023, 43(1): 183-189 doi: 10.11728/cjss2023.01.210922100

星载开关电源的电磁干扰抑制技术

doi: 10.11728/cjss2023.01.210922100
基金项目: 中国科学院空间科学战略性先导科技专项资助(XDA15020200)
详细信息
    作者简介:

    周莉:E-mail:zhouli@nssc.ac.cn

  • 中图分类号: TN86,V242.2

Electromagnetic Interference Suppression Technology for Switching Converters of Onboard Secondary Power Supply

  • 摘要: 电磁干扰(EMI)抑制技术是保证航天器各功能单元正常运行互不干扰的重要技术。开关电源是航天器内电磁干扰的主要来源。基于对星载开关电源DC/DC和负载点电源POL电磁干扰特性的测试结果,提出了一种星载二次电源系统的电磁干扰抑制方案,采用高稳晶振+控制器+时钟管理芯片硬件与软件设计结合的方法,利用高稳晶振为电源模块提供稳定时钟,通过控制器实现时钟管理芯片的分频和时钟分配。系统以非同步方式上电,软件控制时钟管理芯片输出电源模块同步时钟,然后软件打开时钟同步的使能,实现星载开关电源(DC/DC和POL)开关频率的外同步,最后通过测量输出电压频谱的方法验证了电磁干扰抑制方案的有效性。

     

  • 图  1  DC/DC变换器电路工作原理

    Figure  1.  DC/DC block diagram

    图  2  DC/DC在25.5~29.5 MHz频段内的频谱

    Figure  2.  Frequency spectrum of one DC/DC in 25.5~29.5 MHz band

    图  3  一片POL在5.76 MHz的频谱特征(a)和两片POL在28~30 MHz的频谱特征(b)

    Figure  3.  Frequency spectrum of one POL in 5.76 MHz (a) and frequency spectrum of two POLs in 28~30 MHz band (b)

    图  4  采用内部开关频率的DC/DC(a)和POL(b)开关频率谱特征

    Figure  4.  Frequency spectrum of a DC/DC in the internal clock mode (a) and frequency spectrum of a POL in the internal clock mode (b)

    图  5  POL内部开关频率随温度的变化曲线

    Figure  5.  Switching frequency curve of one POL with different temperatures

    图  6  低EMI的星载二次电源系统设计

    Figure  6.  Hardware design for the EMI suppression onboard power supply system

    图  7  POL分别在500 kHz(a)和800 kHz(b)开关频率下的常温效率曲线

    Figure  7.  Switching efficiency curves of one POL with different electric currents at 500 kHz (a) or 800 kHz switching frequency (b)

    图  8  低EMI星载二次电源的上电顺序控制流程

    Figure  8.  Power-up control flow chart for the EMI suppression onboard power supply system

    图  9  不同工作模式下DC/DC输出频谱的对比。(a)内部频率源模式,(b)外部同步频率源模式

    Figure  9.  Frequency spectrum of one DC/DC in different modes. (a) In the internal clock mode, (b) in the external synchronization mode

    图  10  一片DC/DC输出频谱对比。蓝色代表内部频率源模式, 红色代表外部同步频率源模式

    Figure  10.  Frequency spectrum of one DC/DC in the internal clock mode (blue curve) versus in the external synchronization mode (red curve)

    图  11  一片POL不同频率源工作模式下的输出频谱对比。内部频率源模式(a),外部同步频率源模式(b)

    Figure  11.  Frequency spectrum of one POL in different modes. (a) In the internal clock mode, (b) in the external synchronization mode

  • [1] ZHOU Chao, LI Chunmao, ZHU Feng, et al. Electromagnetic compatibility study of switching mode power supply[J]. Telecom Power Technologies, 2004, 21(2): 16-19 doi: 10.3969/j.issn.1009-3664.2004.02.005
    [2] MENG Jin, MA Weiming, ZHANG Lei, et al. Method for analysis and modeling of conducted EMI in switching power converters[J]. Proceedings of the CSEE, 2005, 25(5): 49-54 doi: 10.3321/j.issn:0258-8013.2005.05.009
    [3] CHEN Xuelei. Exploring the 21 cm cosmology: the Tianlai and Hongmeng experiments[J]. Chinese Science Bulletin, 2021, 66(11): 1385-1398 doi: 10.1360/TB-2020-1349
    [4] CHEN X L, YAN J Y, DENG L, et al. Discovering the sky at the longest wavelengths with a lunar orbit array[J]. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2021, 379(2188): 20190566 doi: 10.1098/rsta.2019.0566
    [5] ZHANG Jinxiu, CHEN Xuelei, CAO Xibin, et al. Formation flying around lunar for ultra-long wave radio interferometer mission[J]. Journal of Deep Space Exploration, 2017, 4(2): 158-165
    [6] YANG Xiaojing. The Research and Design of High Frequency Switching Power[D]. Wuhan: Wuhan University of Technology, 2011
    [7] WANG Xiaowen, KANG Ting, KANG Duangang, et al. Design of input filter for switching power supply and its conduction interference suppression[J]. Chinese Journal of Power Sources, 2020, 44(12): 1822-1825,1830 doi: 10.3969/j.issn.1002-087X.2020.12.028
    [8] CHEN Baoxiang, ZHU Zhibo, HUANG Junshuo, et al. Research on power conducted EMI analysis and suppression methods[J]. Journal of Nanjing Normal University (Engineering and Technology Edition), 2019, 19(4): 70-74
    [9] CHEN Han. Study on Construction Method and Temperature Characteristics of Broadband EMI Filter Model[D]. Tianjin: Tianjin University of Technology, 2021
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出版历程
  • 收稿日期:  2021-11-12
  • 录用日期:  2022-03-15
  • 修回日期:  2022-04-29
  • 网络出版日期:  2023-02-03

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