The manufacturer of industrial wireless power devices announced the successful trial of the Proxi-Ring 480, a contactless slip ring that provides wireless power and data to pitch-control systems in wind turbines. The Proxi-Ring 480 is said to make wind-energy generation more cost-effective by increasing uptime and reliability and eliminating costs of maintaining and replacing mechanical slip rings.
“Our contactless slip ring has been working flawlessly ever since installation in a hydraulic wind turbine in Spain eight months ago,” says VP PowerbyProxi Fady Mishriki. “It replaced a mechanical slip ring that was causing problems several times a week and this frequency was increasing as the turbine aged. The faults are hard to diagnose due to their intermittent nature and because turbines are stationary when tested. We set out to prove our wireless device delivers significant benefits over mechanical slip rings and we’ve done that.”
“The plug and play Proxi-Ring 480 was easy for our technicians to get working in the 1.3-MW turbine and it has performed perfectly,” says Jose Rodriguez, Managing Director of IM FutuRe, an O&M company. The slipring passes the required level of power and communication signals wirelessly and without friction. Proxi-Rings allow 360◦ continuous rotation and are corrosion-resistant and waterproof. Unlike mechanical slip rings they require no cleaning or maintenance because contaminants such as oil or brake dust do not affect operation.
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Slip Ring says
Moflon pancake slip rings, with PCB pancake design, thickness can reach up to 6mm, bore size could be designed from 3mm to 70mm , are standard, Color-coded lead wires are used on both the stator and rotor for simplified electrical connections.
More pancake slip ring in Moflon: http://www.moflon.com/mp100.html
It is wonderful! wireless power and data transfer technology must be a new trends in wind turbine industry, but this kind of slip ring will meet all kind of technical problem, for example the distance, the loss etc.
More about slip ring: http://www.arslipring.com
slip ring says
When the slip ring rotates, the contact resistance would change. And when we magnify the contact point between the brush and the conductive ring with the microscope