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Wind Power Generation

Optimal Control of Wind Turbines

Optimal Control of Wind Turbines

If looked at from a distance, wind turbines appear to be driven solely by the wind. Wind turbines used for power generation, however, are actually rotated using a range of technologies for optimum performance. Although wind strength and direction constantly changes, wind turbines must be rotated at a specific speed. Also, because wind strength and wind pressure differ between higher and lower altitudes, the position of the wind turbine blades has a tremendous impact on rotation speed. Nabtesco provides drive units for wind turbines that respond quickly to changes in wind conditions to control turbine rotation. Specifically, we provide yaw drives, which are rotating drives installed behind the wind turbine blades. These drives keep the turbine facing the wind as the wind changes direction and are designed to rotate to catch as much wind as possible even on days when wind speed is low. We also provide pitch drives, which adjust the angles of the wind turbine blades according to changes in wind velocity for optimal power generation. We have developed these products based on our technologies accumulated in the design of reduction gears used in industrial robots. Wind turbines need to be as light as possible but also have to be strong enough to withstand storms, to which they are prone. Thanks to the use of the gear mechanism developed independently by Nabtesco, our wind turbine drive units provide excellent rigidity and low backlash while also being light and compact, making them highly evaluated in the domestic and global markets.

Products

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Solar Thermal Power Generation

Products

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Yaw Drive

Yaw Drive

This drive unit has high rigidity and high load performance based on the Rotor Vector (RV) reduction gear technology. It can be used under severe natural conditions, for example, in both low- and high-temperature areas as well as areas prone to salt damage. The low backlash feature helps prolong the field life of wind turbines.

Pitch Drive (Control System for Wind Turbines)

Pitch Drive
(Control System for Wind Turbines)

The pitch drive controls the orientation of the wind turbine blades with high precision. Because it is compact, it provides high maintenance performance and allows easy oil replacement. As the wind turbine control system, it also helps increase power generation efficiency.

Solar Tracking Equipment

Solar Tracking Equipment

Highly resistant to shocks, including gusty winds, this highprecision drive unit ensures that the heliostat tracks the sun in a precise manner. It uses only a small amount of electricity and is maintenance-free, helping to reduce the life cycle cost of solar thermal power generation.