Wind Energy Science
Wind Energy Science
WES
Articles | Volume 8, issue 12
Articles | Volume 8, issue 12
https://doi.org/10.5194/wes-8-1809-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/wes-8-1809-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 8, issue 12
Research article
 | 
05 Dec 2023
Research article |  | 05 Dec 2023

Electrostatic discharge impacts on the main shaft bearings of wind turbines

Jian Zhao, Xiangdong Xu, and Ola Carlson

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Short summary
The wind turbine's main bearing and its replacement are extremely costly. However, the main bearing is found to be electrically burned after a few years of operation. In this paper, a new pattern of the breakdown mechanism, the bearing current induced by electrostatic discharge (ESD), is studied. The analysis and test results prove that the ESD effect in wind turbines is a non-negligible source of the main shaft bearing current in wind turbines.
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