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

Naučno-Tehničeskij Vestnik Brânskogo Gosudarstvennogo Universiteta

Pustovetov М.Yu.¹  Indylova N.V.¹ 

[1] Don State Technical University;

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

DOI  :  10.22281/2413-9920-2018-04-04-417-423

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown