ResearchBib Share Your Research, Maximize Your Social Impacts
Sign for Notice Everyday Sign up >> Login

A study of possible reasons of the damage by electric current of traction induction motors bearings onboard of electric trains «Lastochka»

Journal: Nauchno-tekhnicheskiy vestnik Bryanskogo gosudarstvennogo universiteta (Vol.4, No. 4)

Publication Date:

Authors : ;

Page : 417-423

Keywords : bearing; frequency converter; traction induction motor; electric train; high-frequency current; shaft-grounding ring;

Source : Downloadexternal Find it from : Google Scholarexternal


There is a problem of damage of bearings of traction induction motors of electric trains «Lastochka» by electric current. Based on the fact that the bearings have a ceramic insulation coating, and the cases of its electrical breakdown is not fixed, the authors put forward a version that a high-frequency current flows through the bearing as through an electric capacitance. The analysis show that the cause of the current can be a radio standard GSM-R The proposed technical solution against the damage of bearings: the use of grounding shaft rings and replace the bearings on the other with ceramic rolling elements.

Last modified: 2019-01-04 05:35:06