Wind turbine diagnostic device for generator components

US9874107B2 · kind B2 · utility

Assignee

• SENVION SE · DE

Inventors

• Martin Falb · Kiel, DE
• Lars Nietmann · Hanerau-Hademarschen, DE

Key dates

• Filing date: Apr 23, 2015
• Grant date: Jan 23, 2018
• Expiry date: Dec 7, 2035

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E10/72
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A wind turbine diagnostic device for diagnosing mechanical damage to generator components of at least one wind turbine, comprising at least one speed sensor for determining a variation over time of the rotational speed of a generator of a wind turbine, the speed sensor having at least one speed signal output for outputting the determined variation over time of the rotational speed, a frequency analysis module and a frequency spectrum signal output for outputting a frequency spectrum, the frequency analysis module determining a frequency spectrum from the determined variation over time of the rotational speed, and a comparator element for comparing a frequency spectrum with a prescribed standard frequency spectrum and for diagnosing mechanical damage to generator components on the basis of the comparison. This increases the possibility of predicting mechanical damage to generator components caused by vibrations.