The Influence of Load and Speed on the Initial Breakdown of Rolling Bearings Exposed to Electrical Currents

被引：2

作者：

Puchtler, Steffen ^{[1
]}

Maier, Robert ^{[1
]}

Kuhn, Martin ^{[2
]}

Burkhardt, Yves ^{[3
]}

机构：

[1] Tech Univ Darmstadt, Inst Prod Dev & Machine Elements, Otto Berndt Str 2, D-64287 Darmstadt, Germany

[2] Valeo Powertrain Electrified Mobil, Siemensstr 15, D-97616 Bad Neustadt an der Saale, Germany

[3] Tech Univ Darmstadt, Elect Drive Syst, Landgraf Georg Str 4, D-64283 Darmstadt, Germany

来源：

LUBRICANTS | 2024年 / 12卷 / 01期

关键词：

rolling bearings; electric bearing currents; breakdown voltage; MACHINES;

D O I：

10.3390/lubricants12010001

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The reason for the failure of electric vehicle drives is increasingly current-induced damage to rolling bearings. Studies show that rolling bearings are more susceptible to current pass-through after the first occurrence of unwanted bearing currents. To investigate this effect, a test plan is introduced with variations in axial and radial loads, as well as rotational speeds. A new bearing is mechanically run-in for each test point and then subjected to a realistic voltage signal of gradually increasing amplitude. After the initial breakdown, the different voltage amplitudes are applied again to investigate the behavior after the initial breakdown. During the whole test, the maximum current, the duration and the dissipated energy of each breakdown are measured. The results provide insights into the processes after the initial breakdown and the stochastic nature of the breakdown behavior.

引用

页数：12