Hydraulic Cylinders wind turbine

As one of the leading manufacturers of Hydraulic cylinders and components, Seahydrosystems has been supplying its products for wind turbines. Wind turbines that swap traditional mechanical drivetrains for hydraulics are potentially lighter, more reliable, and less expensive than those fielded today. Our Hydraulic cylinders and products make their best fit in wind turbines, with our technological advantages of hydraulics in terms of high power density in limited low space, low maintenance, rugged design, outstanding reliability and accuracy.

How hydraulic system works in wind turbine?

Hydraulic systems are used extensively in wind turbines, notably in the pitch, yaw and brake control systems.

The process of turning wind into electricity involves a drivetrain turned by a rotor of two or three blades and related equipment. While small turbines often have fixed rotor blades – they do not pitch – larger turbines require blades that pitch and so are mounted on bearings. To drive each blade to its best pitch position requires a hydraulic cylinder, motor, reservoir and associated equipment. 

Hydraulic cylinders are being used in pitch control systems, allowing the angle of the rotor blades to be varied quickly and precisely through a cam action. The blades are either turned into the wind to increase the rotational speed if the wind speed falls or out of the wind if wind speed increases. This is typically achieved by installing three pitch control systems in the hub of the turbine, one for each blade. Efficiency is likewise enhanced by enabling continual adjustment of the yaw, or rotational position of the nacelle. In the same way that output is optimised by tilting the angle of the blades so that they are facing into the wind, the nacelle too must be rotated about its vertical axis in response to the changing wind direction.

A hydraulic control system controls the pitch angle of the turbine blades, hence controlling the speed and power production.

 What will be the Advantages of Using Hydraulic cylinders and components in wind turbine?

• A hydraulic system will be thousands of pounds lighter than the mechanical gearboxes used today. Also, Hydraulics gets rid of troublesome gearboxes that have failed too easily even in relatively benign locations on land.
• Today’s off-the-shelf hydraulic components are practical for wind turbines with outputs up to about 500 kW.
• Hydraulic drivetrains would decouple torsional vibrations generated in the rotor hub from the generator and boost reliability in the bargain.

So this gives you a clear idea that Hydraulic systems are more reliable and sustainable when compared to other mechanical systems in this field of the wind turbine. Our Hydraulic cylinders and components are highly eco-friendly, safer, efficient and long-lasting to face the variations in wind power even at high extremes. Our customer’s satisfaction and their constant support with our products drive our success in this wind turbine secto