Slip Ring Solutions

There are a number of reasons for transferring power and signals across the rotating hub of a wind turbine. The most common purpose is for power and control of the blade pitch mechanism.

• Hydraulic Systems: Slip ring and fluid rotary union combinations offer multiple signals, electric and hydraulic power transmission for the hydraulic blade pitch actuation
• Electric Systems: Slip rings with higher power circuits transmit signals and electric power for the electric blade pitch actuation
• Direct Drive Systems: High power slip rings allow the transmission of high current for energizing the rotor coils

In addition, many blade designers are considering systems of embedded sensors in rotor blades that will provide real time feedback of blade conditions. These sensors require a method for de-rotating the signals.

In the harsh conditions found in a wind turbine, Moog Slip Rings, Alternators, Fluid Rotary Unions (FRU), Fiber Optic Rotary Joints (FORJ), and Multiplexers provide reliable power and data transmission that has become standard in the industry.

As the worldwide market leader in slip rings, Moog has developed superior fiber brush technology that has an extensive lifetime of over 100 million revolutions. This technology does not require lubricants and is characterized by low wear generation for minimal maintenance. The temperature range and the packaging of this product also matches the harsh conditions required by this industry. Our solutions are designed to help you to increase availability of your wind turbine and reduce your maintenance costs, while ensuring high performance.

Moog also offers fiber optic, multiplexing and contactless solutions.