Design of output filter device of mine-used high-voltage inverter for long-distance power supply
Journal of Physics: Conference Series, 2022 Abstract During the long-distance transmission of the Pulse width modulation ( PWM ) signal of the mine-used inverter, the voltage reflection phenomenon leads to a higher peak voltage at the motor end, which accelerates the insulation aging of the motor and reduces the overall reliability of the system.
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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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Study of large capacity power supply used for coal mine emergency facilities
Gong-kuang zidonghua, 2014 In view of problem that common accumulators used in underground coal mine have obvious constraints, the paper analyzed electricity demands of coal mine emergency facilities and characteristics of dry-charged lead-acid battery, developed large capacity ...
LI Meixiang, ZHOU Zhong, ZHANG Yong
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ГІДРОАКУМУЛЮЮЧІ ЕЛЕКТРОСТАНЦІЇ ЯК ДЖЕРЕЛА РОЗПОДІЛЕНОЇ ГЕНЕРАЦІЇ У СКЛАДІ ПРОМИСЛОВИХ ЕНЕРГОСИСТЕМ
Праці Інституту електродинаміки Національної академії наук України, 2023 The article examines the economic aspects of the efficiency of power systems for mine loads, which include peak pumped-storage hydroelectric power plants that use reservoirs of the mine underground water drainage.
О.Ю. Михайленко +2 more
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Design of current sharing system for mine explosion-proof lithium power supply
Gong-kuang zidonghua, 2021 In order to solve the problem of uneven discharge current when multiple mine explosion-proof lithium power supplies are used in parallel, a current sharing system for mine explosion-proof lithium power supply is designed.
LI Qiwei1,2,3 +3 more
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Power Supply Technology of 5G Equipment in Underground Coal Mine
, 2020 This paper focuses on the study of power supply technology of 5G equipment in coal mine. Combined with the comparison of existing power supply modes and the existing problems, this paper comprehensively analyzes the design scheme of power supply in ...
MA Long
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New technologies and new equipments of coal mine monitoring
Gong-kuang zidonghua, 2015 The paper analyzed the national coal production，the total number of accidents, the death rate per million tons and the changes of serious accidents. On average per year, the coal production had increased by 194 million tons, the number of accidents had ...
SUN Jiping
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Research on Key Factors Affecting Power Supply and Demand Trend Based on Complex Correlation [PDF]
E3S Web of Conferences, 2020 The market behaviors of the supply and demand sides in the power market are the issues that market participants, operators and regulators are most concerned about. This article starts from the two dimensions of power generation market behavior and demand
Liu Dunnan +6 more
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