A Synchronous Suspension Control Method for Horizontal Axis Wind Power Nacelle

Abstract

The invention discloses a method for synchronous suspension control of a horizontal axis wind power nacelle, which has changed the traditional nacelle suspension control with the suspension air gap as the goal of independent control on both sides, and proposes a control strategy for the integration of nacelle suspension height and suspension synchronization; at the same time, it aims at the external The disturbance caused by high-frequency or turbulent wind speed to the suspension of the nacelle is fast time-varying interference, which is very easy to damage the suspension performance of the nacelle. The sliding mode item and the adaptive interference compensation item are introduced to jointly reconstruct the axial and pitch interference of the nacelle suspension. A sliding mode adaptive axial and pitch disturbance observer, together with the axial and synchronous controllers, realizes the stable suspension of the 484kg wind turbine nacelle. The invention greatly improves the suspension stability of the nacelle, the fast-changing interference suppression, and the synchronous tracking performance on both sides, effectively improves the two-point suspension synchronization performance of the nacelle and the fast-changing interference suppression ability, and at the same time has better control over the multi-point suspension of heavier suspended objects. Strong guiding significance.

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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