Scientific and Technical Journal


ISSN Print 2221-3937
ISSN Online 2221-3805

The output voltage of the rectifier units DC traction substations is characterized by constant and pulsatile component of harmonics over a wide frequency range. These harmonics cause additional losses of electric energy in the traction network, degrade EMC traction network of electric rolling stock, as well as a source of disturbing noise that can cause unstable operation of devices of railway signaling, interlocking, interlock, automation, remote control and communications, track circuits.

The results of the analysis of dynamic processes of combined serial-type active filter with a voltage feedback load that is applied to improve the quality of electricity in the output DC traction substations. To analyze the dynamic properties of the combined active filter series type considered it a block diagram. In the proposed scheme, the filter compensation ripple at the expense of making the circuit-level passive compensation voltage generated feedback channel automatic control system. Analyzing the equation for determining the ripple voltage across the load, it was concluded that the increase in loop gain reduces the pulsating component of the load, as well as its increase leads to a decrease in the time constant of the filter and the damping coefficient, thereby increasing oscillation of the combined filter, i.e. it worsens speaker. The analysis of the frequency dependence is shown that the frequency properties of the active filter was essentially depend on the type of the load.

Thus, the combined active filter series type of feedback voltage load achieved the required level of EMC Traction Network with adjacent electrical installations, primarily reduced impact of traction current on the track circuits in traction power supply systems of direct current without a significant complication and appreciation of the filtration system of the traction substation. Study the process of the combined filter proposed scheme indicate the feasibility of its use as a filter aid in traction power supply systems, DC.


1. Heydt G.T., and Liu Y., (2006), Second Harmonic Components in Power System Voltages and Currents, IEEE Transactions on Power Delivery, Vol. 20, No. 1, January 2006, pp. 521 – 523(In English), Url:

2. ShcherbakJ.V., andSemenenkoY.A. Aktivnafіl'tratsіyavikhіdnoї naprugityagovoї pіdstantsії postіinogostrumu[TheActiveFilterOutputVoltageDCTractionSubstation], (2011), Coll.Science. Works Ukr. State. Acad. Boxcars. Transp, Kharkov, Ukraine, No. 127, pp. 146 – 151(InUkrainian), Url:

3. Shcherbak Y.V., and Semenenko Y.A. Analіz dinamіchnikh kharakteristik kombіnovanogo fіl'tra tyagovoї pіdstantsії [Analysis of Dynamic Characteristics of Traction Substation Combined Filter], (2011), Coll. Science. Works Ukr. State. Acad. Boxcars. Transp, Kharkov, Ukraine, No. 142, pp. 137 – 143(In Ukrainian), Url: .

4. Semenenko Yu.O.Doslіdzhennya roboti silovogo aktivnogo fіl'tra poslіdovnogo tipu. Rozvitok naukovoї ta іnnovatsіinoї dіyal'nostі na transportі: materіali 76-ї mіzhnarodnoї naukovo-tekhnіchnoї konferentsії [Study of the Power Active Filter Type], (2014), Development of Consistent Research and Innovation in Transport Materials 76 th International Scientific Conference,15- 17 kvіtnya 2014 r. Coll. Science. Works Ukr. State. Acad. Boxcars. Transp, Kharkov, Ukraine, No. 142, 244 p. [InUkrainian], Url:

5. SemenenkoY.A.Doslіdzhennyarobotikombіnovanogoaktivnogofіl'traposlіdovnogotipuz іmpul'snoyusistemoyukeruvannya. Rozvitoknaukovoї ta іnnovatsіinoї dіyal'nostі natransportі: materіali 77-ї mіzhnarodnoї naukovo-tekhnіchnoї konferentsії 21-23 kvіtnya 2015. Zbіrnik naukovikh prats' Ukraїns'koї derzhavnoї akademії zalіznichnogo transportu [The Study of the Combined Active Serial-type Filter with Impulse Control System Development of Scientific], (2015), Innovation in Transport Materials 77 th International Scientific Conference 21-23 kvіtnya 2015, Coll. Science. works Ukr. State. Acad. Boxcars. Transp., Kharkov, Ukraine, No. 151, Vol.1, 87 p. [In Ukrainian],Url:

6. Johan Lundquist, (2001), On Harmonic Distortion in Power Systems, Department of Electric Power Engineering, Chalmers University оf Technology, Technical report no 371L, Göteborg, Sweden, 147 р. (In English), URL:

7. Luo A., Shuai Z., and Shen J., (2006), Design Considerations for Maintaining DC Side Voltage of Hybrid Active Power Filter with Injection Circuit, Power Electronics, IEEE Transactions, Vol. 24, pp. 75 – 84 (In English), url:

8. Dán A., J. Kisvölcsey, and G. Varjú, (1986) Filtering of Harmonics Generated by Thyristor Controlled AC Traction Systems, In Proc. II. International Conference on Harmonics in Power Systems,Winnipeg, 6-7October 1986, – pp. 404– 413 (In English), URL:

9. Ludbork Allan, (1993), Harmonic Filtered for Notch Reduction,IEEE IAS 21-th Annu. Denver, pp. 1043 – 1047 (In English), URL:

10. Williams S.M., and Hoff R.G., (1988), Discrete Controlled Harmonic and Reactive Power Compensator, IEEE IAS 23-th Annu Mact. Pittsburgh (Pennsylvania), Oct. 1988, pp. 881 – 887 (In English), Url:

Last download:
28 Nov 2019

[ © KarelWintersky ] [ All articles ] [ All authors ]
[ © Odessa National Polytechnic University, 2014-2018. Any use of information from the site is possible only under the condition that the source link! ]