DOI: https://doi.org/10.15802/etr.v0i11.83589

Analysis of the electromagnetic processes in the step-down pulse width converter with accounting of the temperature mode

Р. А. Баранюк, В. А. Тодоренко

Abstract


The problem of overheating of semiconductor conversion devices used in railway transport, is quite relevant. Of particular significance is the problem of converting devices operating in the key non-static mode operating range. The operation of such devices is held in the permanent starting transient electromagnetic processes. Nature of the transitional process and the heating elements converters in this case depends not only on the current load, but also from the previous modes. For these devices the calculations necessary to analyze both static and transient electromagnetic processes and transient thermal processes, which can lead to accidental modes of semiconductor converters.

In this article, based on the analysis down PWM described calculations transient and steady modes of electromagnetic pulse converters based on the temperature mode of passive components. The analysis of the roots of the characteristic equation allows to predict the type of transition and quickly carry out the correction form characteristics, taking into account changes in temperature.

The results of this analysis allow the development of conversion devices to consider the possibility of emergency transient operating conditions due to the heat of passive components.


Keywords


buck converter; difference equations; nonlinear systems; characteristic root; matrix exponential; transients

References


Tonkal V.E., Rudenko V.S., Zhujkov V.Y. and oth. Ventilnye preobrazovateli peremennoj struktury [Valve converters with variable structure]. Kyiv, Nauk. Dumka, 1989. 336p.

Styheletski R., Koroteev I.E., Zhujkov V.Ya. Haoticheskie process v sistemah silovoj elektroniki [Chaotic processes in power electronic systems]. Kyiv, Avers, 2001. 197p.

Soft Ferrites. Data Handbook MA01, Philips Components. Netherlands, Philips Electronics, 1996. 887p.

Aluminium Electrolytic Capacitors, TDK. Germany, Epcos AG, 2014. 40p.


GOST Style Citations


Вентильные преобразователи переменной структуры / Тонкаль В. Е., Руденко В.С., Жуйков В. Я. и др. – Киев: Наук. думка, 1989. – 336 с.

Стжелецки Р. Хаотические процессы в системах силовой электроники / Р. Стржелецки, И. Е. Коротеев, В. Я. Жуйков. – Киев: Аверс, 2001. – 197 с.

Soft Ferrites. Data Handbook MA01, Philips Components. Netherlands, Philips Electronics, 1996. 887 p.

Aluminium Electrolytic Capacitors, TDK. Germany, Epcos AG, 2014. 40 p.