Technical analysis of five major causes of investment in large-scale wind turbines (3)

4. The technical analysis of the causes of less function

Large-scale wind turbines should have more functional performance performance to adapt to the very complex application requirements and changing conditions in wind power construction. In particular, wind turbines should have greater amplitude, higher efficiency, and more ways to achieve large-scale construction. The combination of control measures and regulation formation capabilities and their formation effects, such as the use of only propellers to change output control methods, is difficult to satisfy the application needs of predominance and the huge range of wind strength changes, which will reduce the degree of investment returns.

What's more, the accuracy and effectiveness of the regulation through the control method of changing the wind to attack large-scale blade angles are debatable. It has also become one of the causes of instability in current large-scale wind power. (Note: The adoption of blade pitch control is a means of controlling the output of axial-flow turbines. However, compared with the hydraulic pressure and density of hydropower stations controlled by a water-conducting mechanism, the wind power in nature is much more unstable and sparsely used. It is difficult to fully adapt to the constant change of wind strength in nature by adopting blade attack angle change control, and it may happen that the driving force drifts and the driving force changes, resulting in a decrease in wind power stability.

Larger wind turbines must adopt “multi-generator systems” to accommodate large-scale wind turbines' regulation of large changes in wind strength and large-scale wind turbines' large-scale regulation of large-scale changes in output capacity (Note: When the fan design power exceeds 3-5 - With a power capacity of 10 megawatts or more, the applicability requirements for large-scale changes in the output capacity of large-scale wind turbines will become stronger so that they can make full use of various wind strengths to form wind power and achieve a wide range of operating speeds. This is different from the starting point of the “passive” adoption of dual generators in small and medium-sized fixed-pitch wind turbines. The innovative technology is “actively” using multiple generators and forms a regulatory coordination with another efficient control system.) The multi-generator system must be installed on the ground (sea surface); this will also facilitate installation and maintenance, as well as avoid the damaging effects of cold and heat.