Wind energy power conversion system reducing gearbox stress and improving power stability
US8860236B2 · kind B2 · utility
24Cited by
4References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 19, 2010 |
| Grant date | Oct 14, 2014 |
| Priority date | — |
| Expiry date | Nov 2, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/72
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A wind energy power conversion system includes a gearbox, a generator, an AC to DC power converter, a DC link, and a DC to AC power converter, and at least one ultracapacitor module connected in parallel on the DC link. A method of reducing stress on a wind turbine gearbox can be performed by obtaining an unwanted frequency of the wind energy power conversion system gearbox; determining an input torque value on the input shaft of the gearbox as a function of time; determining a frequency of the input torque value; and adjusting a torque on the output shaft of the gearbox based on the unwanted frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.