Wind turbine slip rings are a critical part of the control and communications between the hub and nacelle.
Slip rings allow power and signal to be passed through rotating parts. In wind turbines slip rings are used to supply power and signal to the pitch system through the main shaft. They are also used to carry power off the generator from the 1500 rpm rotating part to the bus bars and then down-tower for power conditioning. A critical component for wind turbines as failure results in loss of communication to the turbine in the event of pitch slip ring failure. Or the event of generator slip ring failure this can result in thermal events (fires). Quality manufacture of slip rings and proper maintenance practices are key to good operating practices.
BGB offer OEM approved designs combined with feedback from the field to improve performance, circularity and reduce downtime.
Vestas Slip Ring Repair
NEG Micon
V80
V90 3MW
V90 2MW mk7
Siemens Slip Ring Repair
Bonus 1.3
SWT-2.3
SWT-3.0DD
SWT-3.6
Enercon Slip Ring Repair
E48
E70
E82
GE Slip Ring Repair
1.5 ESS
2.X
3.X
FORJ upgrades
Slip ring repair service
- Replace worn parts or remanufacture
- Save cost
- Reduce wind farm waste
- Extended warranties (24 months)
Senvion, Vestas, GE, Suzlon, Siemens, Bonus, Enercon and Nordex slip ring repairs
Slip Rings with circularity
Circular design takes into consideration the entire component life cycle and is optimised for longevity, repair and environmental impact rather than cost. This is closer to the philosophy of wind where wind turbines are design to last 30-35 years and make a positive contribution to the planet. By designing components that use environmental friendly materials in a modular way, this allows structural elements to be reused and consumable parts (brushes, rings, seals) to be changed. This design approach keeps the maximum amount of materials in circulation for as long as possible and typically components can be disassembled in the opposite order they were assembled.
Our Approach
We understand that repairs need to be reliable as well as economical and that different organisations value these metrics in different proportions. This is factored in before starting a repair and the level of overhaul or upgrade is coordinated in line with customer requirements.
We replace all wearing parts as standard:
Seals
Bearings
Brushes
Where parts are damaged we are able to reverse engineer critical parts and manufacture in equivalence leveraging our design, manufacture and supply chain capabilities.
Cables
Rings
Brushes and holders
Gold wire brushes and PCB holders
Testing
Depending on the slip ring type (generator or pitch control), pitch control method and contact technology we tailor our testing to ensure that the slip ring performs its function before being re-installed up tower. We perform continuity, low ohms and flash testing as required to levels that are either specification or turbine derived. This ensures that all of our repairs are fit for purpose and are dependable.
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