System and method for protection of a wind turbine battery backup pitch control system
US9726145B2 · kind B2 · utility
0Cited by
48References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 28, 2014 |
| Grant date | Aug 8, 2017 |
| Priority date | — |
| Expiry date | Oct 23, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/72
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A pitch control system for a wind turbine includes a backup battery bank assigned to each pitch drive motor, with each battery bank having a plurality of individual batteries connected in series. A battery charger is connected in parallel across each battery in the battery bank. A protective circuit is configured with each battery charger and includes a voltage comparator circuit that detects a reverse voltage applied to the battery charger above a threshold value to isolate the battery charger from the reverse voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.