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HUANG Hesong, CHEN Xi, TIAN Chengjin, FU Zhen. Design of a high-performance mine-used intrinsically safe power supply[J]. Journal of Mine Automation, 2019, 45(2): 18-23. DOI: 10.13272/j.issn.1671-251x.2018080008
Citation: HUANG Hesong, CHEN Xi, TIAN Chengjin, FU Zhen. Design of a high-performance mine-used intrinsically safe power supply[J]. Journal of Mine Automation, 2019, 45(2): 18-23. DOI: 10.13272/j.issn.1671-251x.2018080008
shu

Design of a high-performance mine-used intrinsically safe power supply

  • 1.

    College of Electrical Engineering and Automation, Shandong University of Science and Technology, Qingdao 266590, China

  • 2.

    Beijing Tiandi-Marco Electronic-Hydraulic Control System Company Ltd., Beijing 100013, China

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  • For problems of poor electromagnetic immunity and weak load capacity of current intrinsically safe power supply, a high-performance mine-used intrinsically safe power supply was designed. The power supply is based on quasi-resonant flyback switching power supply and dual overvoltage and overcurrent protection, which can convert AC85-250 V wide input voltage into stable DC12 V/2 A output. The test results show that the power supply has small ripple, high efficiency and strong electromagnetic immunity, which meets intrinsic safety performance requirements of GB 3836.4-2010 Explosive Atmospheres Part 4: Equipment Protection by Intrinsic Safety "i".
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