Synchronous suspension control method for horizontal-axis wind-power cabin

Abstract

The invention discloses a synchronous suspension control method for a horizontal-axis wind-power cabin. Suspension control of a traditional cabin is changed into independent control of the two sides by taking a suspension air gap as a target, and a control strategy integrating cabin suspension height and suspension synchronization is provided; and meanwhile, for the problem that the disturbance ofthe cabin suspension caused by external high-frequency or turbulent wind speed is fast time-varying interference, and the cabin suspension performance is extremely prone to damage, a sliding mode item and an adaptive interference compensation term are introduced to coordinately reconstruct the cabin suspension axial and pitch interference, and a sliding-mode adaptive axial and pitch interferenceobserver is proposed to achieve a steady suspension of the wind cabin with the weight up to 484 kg along with axial and synchronous controllers. According to the method, the suspension stability, fast-change interference suppression and two-side synchronous tracking performance of the cabin are greatly improved, the two-point suspension synchronization performance and the fast-change interferencesuppression capability of the cabin are effectively improved, and meanwhile the method has a strong guiding significance for multi-point suspension control of heavy suspended matters.

Description

technical field [0001] The invention relates to a synchronous suspension control method for a horizontal-axis wind power nacelle, in particular to an effective method for solving the large and stable wind power consumption caused by the yaw of a horizontal-axis MW-level wind machine, and belongs to the field of electromagnetic suspension control for wind power generation. Background technique [0002] The wind turbine yaw device is a key component of large and medium-sized horizontal axis wind power generation systems, which can realize the frontal windward of the wind turbine blades and increase the wind energy capture power. Large, high failure rate, poor wind accuracy and other problems, for this reason, Qufu Normal University New Energy Research Institute proposed a wind-driven maglev yaw system, which greatly reduces the power consumption of the cabin yaw. In response to the above problems, a two-point suspension sliding mode cooperative control of the wind turbine cabi...

AI Technical Summary

Problems solved by technology

[0002] The wind turbine yaw device is a key component of large and medium-sized horizontal axis wind power generation systems, which can realize the wind turbine blades facing the wind and increase the wind energy capture power. Large, high failure rate, poor wind accuracy and other problems, for this reason, the New Energy Research Institute of Qufu Normal University proposed a wind-driven magnetic levitation yaw system, which greatly reduces the power consumption of the cabin yaw

In response to the above problems, a two-point suspension sliding mode cooperative control of the wind turbine cabin was carried out, but the problem of suspension asynchronousness on both sides of the nacelle was not involved, and the asynchronous suspension directly caused the pitching of the nacelle; the invention patent 2019105276364 developed an independent adaptive suspension control strategy on both sides of the nacelle , while introducing adaptive cross-coupling to improve the suspension dynamics and synchronization performance of the wind turbine nacelle, but the above-mentioned controls are based on the difference between the air gaps on both sides and then adjusted, which has certain control hysteresis characteristics, and the ability to suppress external time-varying interference is relatively weak ; Invention patent 2020100239107 proposed the active and passive cooperative suspension control of the wind turbine nacelle, and adopted the RBF neural network to adaptively compensate the influence of the pitch disturbance on the axial suspension. The research is based on the stability of the suspension air gap between the stator and rotor of the nacelle, and the key to the yaw stability of the nacelle is the stability of the nacelle’s suspension height. The stability of the nacelle’s suspension air gap does not ensure the stability of the nacelle’s suspension height. interference, the above problems seriously affect the suspension stability of the wind turbine nacelle

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