PowerbyProxi’s Proxi-Ring contactless slip ring provides wireless power and data to pitch control systems in wind turbines, improving wind turbine efficiency by reducing the cost of maintaining and replacing existing mechanical slip rings and their carbon brushes.
Operation and maintenance costs are a sizable portion of wind turbine annual expenditures. By replacing traditional slip rings with the Proxi-Ring, PowerbyProxi aims to eliminate a major source of turbine downtime due to mechanical slip ring failure.
PowerbyProxi’s Proxi-Wave technology is unique in its ability to cater to the demands of variable load operating environments and overcomes the limitations of earlier generations of Inductive Power solutions that suffered from excessive heat generation.
Two solutions exist to provide wireless electricity to wind turbines across rotary joints.
The Proxi-Ring 240 and 750 products are completely wireless alternatives to mechanical slip rings for hydraulically controlled systems. Both of these solutions have been designed to make it easy for Wind Turbine vendors to incorporate in new turbines or for wind farm operators and maintenance service providers to retrofit to existing wind turbines.
The Proxi-Ring 750 is also available as a hybrid solution developed in conjunction with UEA Inc. to deliver a new high performance solution for electric pitch control systems. In the hybrid solution the Proxi-Ring is used to provide wireless electricity to the critical low power and data channels.