Method and system for wind turbine blade movement
US7355294B2 · kind B2 · utility
51Cited by
20References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 22, 2006 |
| Grant date | Apr 8, 2008 |
| Priority date | — |
| Expiry date | Oct 5, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/72
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
This document discusses, among other things, a wind turbine blade pitch system for moving the blades to control their pitch in the event of a power failure. The system includes at least one backup that has a non-electrical component that can pitch the blades in the event that the power failure adversely affects the electrical blade pitch actuator system. Embodiments include pitch systems that have a plurality of pitch driving systems including, but not limited to electrical systems, hybrid electrical/mechanical systems and non-electrical systems. The non-electrical systems include mechanical, pneumatic or hydraulic systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.