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N. V. Nefedova
N. V. Nefedova

Articles

Electric drive, power supply, automation and control of mining and oil and gas production
  • Date submitted
    2003-07-08
  • Date accepted
    2003-08-04
  • Date published
    2004-09-17

Methodology for forming the control action of the complete drive of drilling rigs

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Long-term work of a number of geological and exploration industry teams on improvement of exploration drilling machines showed the necessity of systematization of accumulated experience in the field of electrical equipment development, combining such components as electric drive, remote control system and system of acquisition and analysis of technological drilling parameters. Until now each of these components was considered as a separate element, solving separate tasks. Complex approach in creation of unified structure allowed to develop a model of control system considering a number of technological process parameters and a technique of forming control action of complete electric drive.

How to cite: Nefedova N.V. Methodology for forming the control action of the complete drive of drilling rigs // Journal of Mining Institute. 2004. Vol. 157. p. 122-125.
Without section
  • Date submitted
    1990-11-09
  • Date accepted
    1991-01-28
  • Date published
    1991-12-29

Experimental studies of adjustable asynchronous electric drive for exploration drilling machines

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The development of theory and practice of adjustable AC electric drives on the basis of valve frequency converters contributes in recent years to the wide implementation of such drives in various industries.

How to cite: Emelyanov A.P., Sleptsova Z.B., Nefedova N.V., Agamirzov S.S. Experimental studies of adjustable asynchronous electric drive for exploration drilling machines // Journal of Mining Institute. 1991. Vol. 128. p. 114-120.
Without section
  • Date submitted
    1981-10-11
  • Date accepted
    1981-12-02
  • Date published
    1982-07-13

Modeling on the electrodynamic modem of the devices of the combined compensation of the network supplying the powerful drives

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Sustainable and highly productive operation of mining machines is largely determined by the quality of electrical energy in the underground distribution network. The main means of improving the quality of voltage at the terminals of electrical receptors are compensating devices that change the mode of operation of the distribution network, which directly affects the operation of the electric drive of combines ...

How to cite: Nefedova N.V. Modeling on the electrodynamic modem of the devices of the combined compensation of the network supplying the powerful drives // Journal of Mining Institute. 1982. Vol. 94. p. 99.
Without section
  • Date submitted
    1978-08-28
  • Date accepted
    1978-10-18
  • Date published
    1979-02-01

Анализ рудничных распределительных сетей с продольно-поперечной компенсацией

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Имея в виду целесообразность применения продольно-поперечной компенса­ции в подземных сетях калийных рудников, произведем анализ режимов рабо­ты рудничной распределительной сети, характерный для производственного объединения «Белорускалий» ...

How to cite: Kvyatkovskii V.M., Nefedova N.V., Shklyarskii Y.E. // Journal of Mining Institute. 1979. Vol. 84. p. 34.
Without section
  • Date submitted
    1978-08-07
  • Date accepted
    1978-10-04
  • Date published
    1979-02-01

Лабораторная установка для регулирования реактивной мощности

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Уменьшить потери напряжения и активной мощности в рудничной распреде­лительной сети можно одновременным включением установок продольной ем­костной компенсации потерь напряжения и нерегулируемых источников реак­тивной мощности ...

How to cite: Nefedova N.V. // Journal of Mining Institute. 1979. Vol. 84. p. 57.
Without section
  • Date submitted
    1978-08-19
  • Date accepted
    1978-10-08
  • Date published
    1979-02-01

Электрооптическое устройство гальванической развязки в цепях регуляторов напряжения

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Существующие в настоящее время тиристорные схемы, имеющие гальваниче­скую связь с силовой частью, имеют ряд недостатков: возможность нежела­тельного отпирания тиристоров, появление обратной связи, связь низковольт­ной и высоковольтной цепей ..

How to cite: Ananev K.A., Konovalova S.A., Nefedova N.V. // Journal of Mining Institute. 1979. Vol. 84. p. 60.