Wind magnetic suspension cabin suspension control method

Abstract

The invention provides a wind magnetic suspension cabin suspension control method which aims at a nolinear wind cabin suspension system with strong interference and heavy suspended matter and can reasonably divide a control task from interference suppression. The method includes the steps that cabin suspension is divided into two parts including suspension mechanical dynamics and converter currenttracking, the suspension mechanical dynamics completes suspension air gap control and sets converter suspension current reference, and the converter current tracking completes suspension current reference tracking; the suspension mechanical dynamics adopts a suspension steady-state controller and an interference compensator to complete suspension current reference setting in a coordinated manner;and the converter current tracking adopts a current tracking steady-state controller and a self-adaption counter electromotive force compensator to cope with influences of counter electromotive forcechanges caused by suspension air gap fluctuation and converter parameter changes caused by suspension temperature rise on current tracking in a coordinated manner. The wind magnetic suspension cabinsuspension control method improves the steady state performance and the interference suppression capability of the cabin suspension system, and lays a foundation for wind alignment of wind turbine cabin yaw.

Description

technical field [0001] The invention discloses a suspension control method of a wind-force magnetic suspension nacelle, which is an effective control method applied to a suspension system with heavy suspended matter, many internal and external disturbances and strong nonlinear suspension, and belongs to the field of electrical engineering control. Background technique [0002] The wind turbine yaw device is a key component of large and medium-sized wind power generation systems, which can realize the windward facing of the wind turbine blades and increase the wind energy capture power. However, the heavy nacelle and the fan yaw mechanism composed of multiple motors and multi-gears make the fan yaw power consumption large and the failure rate high. The magnetic levitation technology is introduced into the yaw system, but the levitation winding has a large inductance, and the inductance value varies with the air flow. In addition, the temperature rise of the winding also often...

AI Technical Summary

Problems solved by technology

However, due to the relatively light weight of the suspended matter and the relatively small inductance value of the levitation winding, the hysteresis of the levitation electromagnetic force caused by the levitation winding voltage is often ignored. The suspension system with a relatively low dynamic response speed of electromagnetic force is not suitable for the control of the suspension system of the wind power magnetic levitation nacelle

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