Fan Yaw Correction System

Abstract

The embodiment of the invention discloses a fan yaw correction system, and relates to the technical field of wind power generation in order to solve the problem that no anticipation mechanism for theyaw angle error condition exists in the prior art. The fan yaw correction system comprises a controller, a correction cam counter and an electronic switching value sensor. The electronic switching value sensor is used for testing the real-time yaw angle. The controller is connected with the electronic switching value sensor and used for obtaining a first test result of the electronic switching value sensor and determining a first test value of the cable torsion angle according to the first test result. The correction cam counter is used for judging whether the cable torsion angle reaches a preset angle or not, and the preset angle is smaller than the cable torsion limit angle. When the cable torsion angle reaches the preset angle, the controller receives an angle reaching signal sent by the correction cam counter and judges whether a first difference between the first test value of the cable torsion angle and the preset angle exceeds a first preset difference or not, and if yes, cablecombing is conducted to the zero degree with the preset angle as the cable combing angle, and the yaw angle is reset.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to a wind turbine yaw correction system. Background technique [0002] A wind turbine is a device that converts wind energy into electrical energy. In a wind turbine, the yaw system is one of the important components of the wind turbine. It is used to cooperate with the control system of the wind turbine so that the wind turbine is always in the wind State, make full use of wind energy. [0003] The calculation of the yaw angle is a very important part in the yaw system. The high-precision yaw angle calculation is not only beneficial to the yaw control, but also can be used to reduce the failure rate of the yaw safety chain. For example, an accurate yaw angle is conducive to accurate calculation of the twisted cable angle. If the calculation error of the yaw angle is large, it will easily lead to a large calculation error of the twisted cable angle, which will lead to...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a wind turbine yaw correction system, which is used to solve the problem of lack of a pre-judgment mechanism for yaw angle errors in the prior art

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