Abstract
The objective of the study presented in the article is to improve the mathematical model for calculating power losses in a pantograph slide, in particular, taking into consideration the enhanced values of a contact wire zigzag during the motion of an electric rolling stock. The subject of the study is a pantograph slide. The article provides an example for calculating the slide of a pantograph equipped with carbon inserts, illustrating that the heating of the entire structure of the slide is performed stronger when a contact wire is in the extreme position of the enhanced zigzag, while the distribution of heating along the slide is uneven and the greatest power of resistive heating is observed over the shunts. The obtained results of heating power distribution of the slide allow us to supplement the complex model of a thermal state of the pantograph developed at Omsk State Transport University. The versatility of the model allows to investigate various zigzags of the contact wire and to assess the impact on distribution of traction current along the slide, depending on the installation locations of shunts and their quantity.
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