Results 21 to 30 of about 26,402,257 (196)
Technologies of Batteries Used in Coal Mine Vehicles
Gong-kuang zidonghua, 2011 The paper introduced characteristics of various batteries used in trackless auxiliary haulage vehicles of coal mine including special type lead-acid battery of coal mine, flame-proof and start lead-acid battery, flame-proof and fixed lead-acid battery ...
YUAN Xiao-ming
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Design of a Soft-start Circuit for Mine-used Intrinsic Safety Device
Gong-kuang zidonghua, 2011 For problems that instantaneous large current in start of mine-used devices could lead to power supply cutting-off and abnormal start of the devices, the paper introduced design of a kind of soft-start circuit for mine-used intrinsic safety devices which
FANG Bin, SHEN Xiao-qiang, QIU Yu
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Simulation of the power supply system of the coal mine section [PDF]
E3S Web of Conferences, 2021 At present, the designing of a power supply system for mine sections is performed in accordance with obsolete regulatory documents made in the early 90s of the 20th century. This slows down the implementation of the ‘digital mining operation’ concept and
Nepsha Fedor +3 more
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Research on Safety of Mine Power Supply System [PDF]
, 2021 Electric power is one of the main supplies of mine energy. The safety of electric power is of great significance to the safety of mines. The probability of blackout is relatively small. But once it happens, the harm is great.
Shan Renzhong +7 more
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Design analysis of mine-used intrinsic safety power supply
Gong-kuang zidonghua, 2014 In view of requirements that intrinsic safety power supply must has multi-protection of over-current and over-voltage, the paper introduced working principle of a circuit of mine-used intrinsic safety power supply based on LM317 regulator, analyzed ...
LIU Qi
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Setting strategy of instantaneous current quick-breaking protection for mine power grid
Gong-kuang zidonghua, 2023 The mine power grid operating environment is poor. When a short circuit fault occurs in the underground power supply system, the use of complex anti-skip trip protection device will reduce the reliability of the entire power grid and increase the cost ...
YU Qun, CUI Guoliang, GU Feng, LIU Tao
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A mine-used adaptive power supply with super wide input voltage range
Gong-kuang zidonghua, 2020 For problems of existing mine-used power supply such as inconvenient access, large volume, poor anti-fluctuation ability, complex circuit and high cost, a mine-used adaptive power supply with super wide input voltage range was designed.
LIN Yin, MENG Xiaohong, LIU Yahui
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Design of mine cascade converter with wide input voltage range
Gong-kuang zidonghua, 2022 The converter used in the power supply has problems of low voltage gain, high voltage stress of power tube, non-electrical isolation and complex control.
LIU Yangqing, ZHOU Yuan
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Application of FACTS Devices in Power Supply Systems of Coal Mines [PDF]
E3S Web of Conferences, 2020 In this article, the authors discuss the use of FACTS devices in coal mine power systems. The problems of reactive power compensation and the disadvantages of regulatory and technical documentation regarding the use of modern reactive power compensation ...
Nepsha Fedor +4 more
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Knowledge acquisition in supply chain partnerships: the role of power [PDF]
, 2012 Knowledge is recognised as an important source of competitive advantage and hence there has been increasing academic and practitioner interest in understanding and isolating the factors that contribute to effective knowledge transfer between supply chain
Ghobadian, A +8 more
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