Electrostatic discharge impacts on the main shaft bearings of wind turbines
| Autor: | J. Zhao, X. Xu, O. Carlson |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Wind Energy Science, Vol 8, Pp 1809-1819 (2023) |
| Druh dokumentu: | article |
| ISSN: | 2366-7443 2366-7451 |
| DOI: | 10.5194/wes-8-1809-2023 |
| Popis: | This paper studies the electrostatic discharge effect in wind turbines, a possible trigger source of the main bearing current. A lab setup with a charge generator and downsized wind turbine was built to verify the impact of electrostatic discharge on the main bearing current. In the test, a fatal amplitude for the bearing current was found at only −93 mV driven voltage on the shaft. Compared with the bearing current driven by the common-mode voltage, the electrostatic discharge effect triggers the bearing breakdown at a lower shaft voltage but much higher bearing current amplitude. The results demonstrate that the electrostatic discharge effect is a pattern of the bearing current in wind turbines and is much more dangerous to the bearing. |
| Databáze: | Directory of Open Access Journals |
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