Zobrazeno 1 - 10
of 18
pro vyhledávání: '"V V, Litovchenko"'
Autor:
V. V. Litovchenko
Publikováno v:
Public administration and customs administration. :9-13
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b43adc03ec8a34333d5294ca6f6c369b
https://doi.org/10.32836/2310-9653-2021-4.2
https://doi.org/10.32836/2310-9653-2021-4.2
Publikováno v:
Russian Electrical Engineering. 91:69-76
A dc electric locomotive simulation model is considered that makes it possible to study transient and steady processes and may serve as a basis for the notion of a “digital locomotive” being implemented within the “Digital Railway” project. O
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::53d8d5865ccdf60487385f7f50cea655
https://doi.org/10.3103/s1068371220010071
https://doi.org/10.3103/s1068371220010071
Publikováno v:
Russian Electrical Engineering. 90:641-646
A mathematical model of the “traction network–ac electric locomotive with four-quadrant converter” electrical system is proposed. Analysis of electromagnetic processes is carried out. Calculation formulas of the system parameters are derived, a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0f58666f25ae5d980bedc7cda6862aa6
https://doi.org/10.3103/s1068371219090050
https://doi.org/10.3103/s1068371219090050
Publikováno v:
Russian Electrical Engineering. 87:512-517
On the main railways in Russia, two types of current in the contact wire are used: dc voltage of 3 kV and ac voltage of 25 kV with a frequency of 50 Hz. Therefore, prospective electric rolling stock should have double the power. Improving the capacit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c04e902fabbeb79d21403852a8dbf65e
https://doi.org/10.3103/s1068371216090066
https://doi.org/10.3103/s1068371216090066
Publikováno v:
Russian Electrical Engineering. 86:534-539
Questions of energy efficiency of ac electric rolling stock are considered in this paper. Data on the very low power factor in the cargo electric ac locomotives that are in operation on the railways of the Russian Federation on the unmanaged valves,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2ebe44022c908b7b0f4bccac26bf6012
https://doi.org/10.3103/s1068371215090072
https://doi.org/10.3103/s1068371215090072
Publikováno v:
Russian Electrical Engineering. 85:498-504
A mathematical model of a commutator traction motor is considered that allows one to study transient and steady processes. In the model of the electrical part of the motor, the following four components are distinguished: circuits of the armature, co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3184c005bd640edce65bc2eef0676259
https://doi.org/10.3103/s1068371214080082
https://doi.org/10.3103/s1068371214080082
Publikováno v:
Russian Electrical Engineering. 85:176-182
The issue of determining the parameters of a promising two-system of freight electric locomotive is reviewed with consideration of the main directions of improvement of the technical parameters and characteristics of the rolling stock provided by the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ebb44c22aac50d3861081b48b3b062ea
https://doi.org/10.3103/s1068371214030079
https://doi.org/10.3103/s1068371214030079
Publikováno v:
Russian Electrical Engineering. 83:676-680
The operation of auxiliary machines in ac locomotives from a single-phase grid is considered. To obtain a symmetric three-phase voltage from a single-phase voltage, a static phase splitter must be employed, in the form of a single-phase reversible co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::14b0982ca93aa66a76d2c9863ab89fc6
https://doi.org/10.3103/s1068371212120085
https://doi.org/10.3103/s1068371212120085
Publikováno v:
Russian Electrical Engineering. 82:399-404
The peculiarities of using multilevel (three-level) voltage inverters for traction purposes are studied. It is shown that a three-level inverter allows one to achieve economical voltage control in traction motors which reduces losses in both devices
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cb8f9fe51718bdc6158f752b0c3f9508
https://doi.org/10.3103/s1068371211080050
https://doi.org/10.3103/s1068371211080050
Publikováno v:
Voenno-meditsinskii zhurnal. (9)
2584 wounded were evacuated by helicopters during Armenian earthquake, December, 1988--that was 20% of all hospital cases. But, practically, the possibilities of aviation in Spitak and Leninakan regions were far more extensive. The more effective emp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::d9b4563b0e9abeeb48543624408a6d26
https://pubmed.ncbi.nlm.nih.gov/1836908
https://pubmed.ncbi.nlm.nih.gov/1836908