Improving method for power of wind power generator

Abstract

The invention discloses an improving method for power of a wind power generator. According to the improving method for power, the pitch angle of a wind turbine blade is controlled to be optimized and adjusted by an obtained acceleration of a wind turbine, such that the high use rate of the wind energy is realized in a change process of a wind speed by optimizing and adjusting the pitch angle of the blade. According to the improving method, the pitch angle of the wind turbine blade is correspondingly controlled to be optimized and adjusted by obtaining the change of the acceleration of the wind turbine, that is, by adjusting the change of the pitch angle of the wind turbine blade in the change process of the wind speed, an operation track of a Cp value in a Cp-lambda curve is controllably changed, such that the efficient use of the wind energy can be effectively and reliably realized in the change process of the wind speed, the power of the wind power generator is stably, effectively and reliably improved and the operation of the wind power generator is economic, reliable and practical.

Description

technical field [0001] The invention relates to a control method of a wind power generator, in particular to a method for increasing the power of a wind power generator. Background technique [0002] Wind power generators realize energy conversion through the use of natural wind energy, and the utilization rate of wind energy directly determines the economical efficiency of operation. Wind turbines, especially MW-level wind turbines are usually based on tracking the optimal C p The control method of -λ curve can obtain the maximum utilization rate of wind energy, and the optimal C p The main factor of -λ curve control depends on the stable wind speed environment. [0003] However, the speed of wind energy in nature is variable and non-constant, which will cause the rotating speed of the running wind rotor to fail to keep up with the rapid change of wind speed under the action of its own large inertia. In this way, when the wind speed suddenly increases λ The value (tip sp...

AI Technical Summary

Problems solved by technology

Apparently, in wind turbines running C p In the -λ graph, point D and C under the condition that the pitch angle β of the wind rotor blade does not change p The value is obviously low, so that the wind turbine cannot realize high efficiency utilization of wind energy during the wind speed change process, resulting in poor operating economy of the wind turbine

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