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
doaj +1 more source
Heat recovery from mineworkings: opportunities in the Glasgow area [PDF]
, 2017 Glasgow is one of many locations within the United Kingdom once dotted with a number of thriving coal mines. Before the suitability of the water stored in mines can be determined for use in ground source heat pump (GSHP) heating applications, it is ...
Aaen, Bjorn +6 more
core +1 more source
Implementation of explosion safety regulations in design of a mobile robot for coal mines [PDF]
, 2018 The article focuses on specific challenges of the design of a reconnaissance mobile robotic system aimed for inspection in underground coal mine areas after a catastrophic event.
Babjak, Ján +5 more
core +2 more sources
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.
openaire +1 more source
Coal industry in the context of Ukraine economic security [PDF]
, 2017 Purpose. To rate the main factors and indicators of the national economic security, in particular the degree of the country’s provision with primary natural resources which determine the global energy consumption trends. Methods.
Horbatova, V +3 more
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A moving baseline for evaluation of advanced coal extraction systems [PDF]
, 1981 Results from the initial effort to establish baseline economic performance comparators for a program whose intent is to define, develop, and demonstrate advanced systems suitable for coal resource extraction beyond the year 2000 are reported.
Bickerton, C. R., Westerfield, M. D.
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LiFeO4 battery power supply system for mine auxiliary transportation vehicle
Gong-kuang zidonghua, 2016 For problems of short cycle life and high maintenance cost of existing power supply of domestic mine auxiliary transportation vehicle which uses lead-acid batteries as power supply, the paper proposed application of LiFeO4 battery to the mine vehicle ...
XIAO Nan +4 more
doaj +1 more source
A concept to use energy of air flows of technogenic area of mining enterprises [PDF]
, 2018 Topical issues concerning the possibilities of effective energy generation on the basis of Ukrainian mining enterprises have been highlighted. Attention is drawn to one of the most challenging tendencies of nontraditional energy sources
Cabana, Edgar +20 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
doaj +1 more source
China and the Spanish Empire [PDF]
, 1996 Editada en la Fundación Empresa PúblicaEn este artículo argumentamos que Ming China desempeñó un papel fundamental en el auge y decadencia del Imperio español. La demanda china de plata permitió elevados beneficios hasta 1640.
Atwell +50 more
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