Think proportional flow for blade-pitch control
July 7, 2009 by Paul Dvorak
Filed under Hydraulics, Wind Turbine Controls
Excerpt: To provide smooth and consistent power outputs, wind-turbine manufacturers use hydraulics to set the “pitch” of the rotor blade. The Eaton Vickers KB range of proportional flow control valves from Eaton’s Hydraulics Operations, Eden Prairie, Minn., has been the frequently selected valve to …
Hydraulic yaw and pitch drives
July 7, 2009 by Paul Dvorak
Filed under Drives, Hydraulics
Excerpt: For years, Nabtesco says it has been developing hydraulic equipment, engine accessory and fuel systems, and flight control systems for several Japanese Defense Agency programs. Now the company, a manufacturer of hydraulic drives and controls, is expanding into energy-efficiency and environment-f …
Filters for wind-turbine hydraulics
July 7, 2009 by Paul Dvorak
Filed under Hydraulics, Maintenance
Excerpt: Eaton’s Vickers Filters handle flows to 450 gpm and pressures to 6,090 psi. Bypass valves, pressure drop indicators, and media grades facilitate filter installation and provide needed system cleanliness. A closer look at reservoir vent filters shows its useful features. These sport visu …
Hydraulic firm introduces quick-connect couplings
July 3, 2009 by Paul Dvorak
Filed under Hydraulics, Wind Safety
Excerpt: The range of hydraulic couplings has expanded for CEJN Industrial Corp., Gurnee, Ill, with several new series. Several new products meet the ISO 16028 standard and are available in many versions and sizes, including couplings in steel and stainless steel with a working pressure to 500 bar. ISO 7 …
How to protect high-pressure hydraulics
June 20, 2009 by Paul Dvorak
Filed under Hydraulics
Excerpt: A new rupture-disc assembly for wind-turbine hydraulic brakes protects equipment from damage and down time in the event of overpressure. Intended for the hydraulic brakes and yaw brakes of wind turbines, the rupture-disc assembly, model CD31179 provides accurate and leak-free overpressure relief …
Pitch controls: electric, hydraulic, or something new?
June 5, 2009 by Paul Dvorak
Filed under Hydraulics, Mechanical Components, Turbine Design
Excerpt: Dr Sherif El-Henaoui Engineering Director …
Low pressure course on hydraulics for wind turbines
June 1, 2009 by Paul Dvorak
Filed under Hydraulics, Maintenance, Training
Excerpt: A four-and-a-half-day training course is aimed at sales and maintenance personnel who must understand hydraulics systems used in wind turbine operation. Wind Turbine Fundamental Hydraulics will be offered by industrial manufacturer Eaton Corp. "Nearly half of the utility-grade wind turbines in se …
