Analysis of current harmonics in 3kV DC catenary caused by specific current harmonics of an asynchronous motor

Mirosław Lewandowski

doi:10.2478/v10174-010-0017-y

Authors

Mirosław Lewandowski Politechnika Warszawska, Zakład Trakcji Elektrycznej Author

DOI:

https://doi.org/10.2478/v10174-010-0017-y

Keywords:

electric traction system, asynchronous motor, current harmonics

Abstract

The mathematical model of vehicle supply system as welI as the mathematical model of main circuit of locomotive with asynchronous motors have been described in this article. The necessity of analysis of disturbances caused by distorted current run of drive motors emerged together with the introduction of high power vehicles with power eIectronic converters. Analysis of the compatibility of traction high current circuits with circuits of the signal and traffic controI systems requires the knowledge of current spectrum in a catenary, which has been taken by a vehicle. The author has described the algebraic method of calculating of the spectrum amplitudes in a catenary. It does not require laborious and time-consuming simulations of a system, which considerably decreases preliminary costs of designation and dimensioning of a vehicle drive system.

References

Lewandowski M.: Metoda obliczenia harmonicznych napięcia wyjściowego falownika za pomocą funkcji Bessela. Wyd. Politechniki Krakowskiej, Elektrotechnika z.1E/2007, zeszyt 5 (104).

Skarpetowski G.: Uogólniona teoria przekształtników statycznych WPW Warszawa 1997.

Szabatin J.: Przetwarzanie sygnałów. PWN 2005.

Szeląg A., Steczek M.: Impedancja wejściowa pojazdu trakcyjnego jako kryterium spełnienia wymagań kompatybilności. 9th International Conference "Modern Electric Traction". MET 2009, Gdańsk, s. 208-211.