Emergency adjustment device for blade pitch adjustment systems for wind energy installations
US8941351B2 · kind B2 · utility
1Cited by
7References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 6, 2010 |
| Grant date | Jan 27, 2015 |
| Priority date | — |
| Expiry date | Jun 11, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/72
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An adjusting device for rotor blades of a wind power plant is disclosed. An AC motor is provided for adjusting the angle setting of the rotor blades. An input serves for receiving an input alternating current. A frequency converter is provided for generating a second alternating current having a second frequency, wherein the second alternating current drives the AC motor. Additionally, a DC voltage source and an inverter are provided for converting the voltage provided by the DC voltage source into an alternating current for the AC motor. The inverter is thereby separated from the frequency inverter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.