Upgrade for Existing Wind and Hydro Brush Generators

The installed base of generation applications that use brush motor technology is extensive.  For instance, 95% of the power generated in Norway originates from hydro-electric sources, many of which were installed decades ago and continue to be maintained rather than replaced.  In these traditional brush generators, high current transfer to the rotor creates heating at the brush which exacerbates wear and requires ongoing cleaning and replacement.  

Roll-RingsR represent the next-generation in rotary contact technology. Invented by Honeywell and installed on the International Space Station, Roll-Rings pass current across the rotary interface using a rolling, instead of slipping contact.  Low contact resistance at the rolling interface affords high power handling without heating and wear to result in longer life, smaller size, and lower life-cycle costs.  Very low wear at the rotary contact means that field maintenance is not required and the high reliability of Roll-Rings allows operators to avoid down time and unscheduled interruptions. 

Coupler-based Roll-Ring contacts are now available for high power applications.  This broad wall design has 10x more power handling capability when compared to traditional flexure designs.  This results in units capable of passing standard power signals in excess of 200 amps per inch of axial pitch in small diameter prototypes.  This exciting technology is now available for joint development with partners to bring new and upgrade opportunities to brush motor markets.

Jeffrey Gilling, CEO

Diamond-Roltran, LLC

Diamond Antenna and Microwave Corporation

59 Porter Road, Littleton, MA, USA 01460

Ph 001.978.486.0039 x105