The article shows the voltage curve in the DC contact network, specifies the features of the operation of the power circuit of DC electric locomotives with an asynchronous traction drive. The advantages and disadvantages of single-link and multi-link passive filters based on the construction of the amplitude-frequency characteristic are stated, the advantages of active filters based on an operational amplifier are presented. The diagram of an operational amplifier based on a classical transistor differential amplifier is presented. The recommended scheme of the active low-frequency filter of the 2ES10 electric locomotive is constructed, its mathematical description is presented. In the MATLAB/Simulink environment, the degree of smoothing of the input ripple voltage of the catenary by an active and passive filter was simulated, and graphs of the input and output voltages were plotted using these filters. A numerical comparison of noise smoothing by an active and passive filter is made.

Topics
Operational amplifier, Transistors, MATLAB
1.
A. I.
 
Kuznetsov
 and
N. O.
 
Frolov
,
Volga Transport Bulletin
 
3
(
81
), pp.
33
–
40
(
2020
).
Google Scholar
 
2.
S. G.
 
Paula
 and
C. S.
 
Ravichandranb
,
Microprocessors and Microsystems
 
77
, p.
103162
(
2020
).
https://doi.org/10.1016/j.micpro.2020.103162
Google Scholar
Crossref
Search ADS
 
3.
A. I.
 
Kuznetsov
 and
N. O.
 
Frolov
,
Transport of the Urals
 
2
(
61
), pp.
76
–
9
(
2019
).
https://doi.org/10.20291/1815-9400-2019-2-76-79
Google Scholar
Crossref
Search ADS
 
4.
A. I.
 
Kuznetsov
,
Transport of the Urals
 
3
(
66
), pp.
100
–
3
(
2020
).
https://doi.org/10.20291/1815-9400-2020-3-100-103
Google Scholar
Crossref
Search ADS
 
5.
A. N.
 
Popov
,
I. A.
 
Radionov
 and
A. S.
 
Mushenko
,
IFAC-PapersOnLine
 
48
(
11
), pp.
457
–
62
(
2015
).
https://doi.org/10.1016/j.ifacol.2015.09.228
Google Scholar
Crossref
Search ADS
 
6.
D. A.
 
Sychev
,
N. I.
 
Naumovich
 and
E. S.
 
Khayatov
,
Procedia Engineering
 
129
pp.
987
–
91
(
2015
).
https://doi.org/10.1016/j.proeng.2015.12.158
Google Scholar
Crossref
Search ADS
 
7.
P.
 
Khorovits
 and
U.
 
Hill
,
The art of circuitry
 
2
, p.
704
(
2014
).
Google Scholar
 
8.
S.
 
Shantarenko
,
V.
 
Kuznetsov
,
E.
 
Ponomarev
,
A.
 
Vaganov
 and
A.
 
Evseeva
,
Transportation Research Procedia
 
54
, pp.
961
–
71
(
2021
).
https://doi.org/10.1016/j.trpro.2021.02.151
Google Scholar
Crossref
Search ADS
 
9.
A.
 
Buynosov
,
V.
 
Lapshin
,
A.
 
Smolyaninov
 and
A.
 
Dinislamov
,
Polytransport Systems-2018 MATEC Web of Conf.
 
216
, p.
02020
(
2020
).
Google Scholar
 
10.
A. P.
 
Buynosov
 and
S. N.
 
Antropov
,
Transport of the Urals
 
4
(
63
), pp.
43
–
8
(
2020
).
Google Scholar
 
This content is only available via PDF.
© 2021 Author(s).
2021
Author(s)
You do not currently have access to this content.