Wind turbine and method for determining at least one rotation parameter of a wind turbine rotor
US8092174B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 3, 2007 |
| Grant date | Jan 10, 2012 |
| Priority date | — |
| Expiry date | Dec 9, 2028 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05B2270/807
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of determining at least one rotation parameter of a wind turbine rotor rotating with a rotation speed and a phase is provided. The method comprises the steps of: measuring an effective centrifugal force acting in a first pre-determined direction, which is defined in a co-ordinate system rotating synchronously with the rotor, on at least one reference object located in or at the rotor, establishing a first angular frequency representing the rotation speed of the rotor on the basis of variations in the measured effective centrifugal force due to gravitational force, establishing a second angular frequency representing the rotation speed of the rotor by use of at least one yaw rate gyro, and establishing the value of the rotation speed as the rotational parameter by correcting the second angular frequency by comparing it to the first angular frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.