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Research on dynamic characteristics of compensation mechanism for large-power wind turbine disc brake

Yu Liu (Dalian Jiaotong University, Dalian, China)
Jie Hao (Shenyang Institute of Engineering, Shenyang, China)
Panli Kang (Dalian Jiaotong University, Dalian, China)
Zhihua Sha (Dalian Jiaotong University, Dalian, China)
Fujian Ma (Dalian Jiaotong University, Dalian, China)
Dapeng Yang (Dalian Jiaotong University, Dalian, China)
Shengfang Zhang (Dalian Jiaotong University, Dalian, China)

Multidiscipline Modeling in Materials and Structures

ISSN: 1573-6105

Article publication date: 13 January 2020

Issue publication date: 17 April 2020

163

Abstract

Purpose

The purpose of this paper is to establish a rigid–flexible coupling model of wind turbine disc brake to simulate the actual working condition of the wind turbine brake and to study the dynamic characteristics of the compensation mechanism under different friction coefficients and braking force. It provides reference for the structure design and optimization of the compensation mechanism (compensation brake wear) in the wind turbine brake.

Design/methodology/approach

Based on multi-body contact dynamics theory, the rigid‒flexible coupling dynamic model of wind turbine brakes with compensation mechanism is established, in which the contact process of the components in the compensation mechanism and the phenomenon of rotation and return are described dynamically, and the rotation angle of the compensation nut and the axial displacement response of the compensation screw are calculated under different parameters.

Findings

The analysis results show that the braking reliability of the brake compensation mechanism can be effectively improved by increasing the friction coefficient of threads or increasing the friction of push rod contact surface; increasing the braking force can also improve the reliability of brake compensation mechanism, but when the braking force comes over a critical value, the effect of braking force on the reliability of the brake is very small. The braking test verifies the effectiveness of the simulation results.

Originality/value

Analyzing the influence of compensation mechanism on braking reliability in the braking process is of great practical significance for improving the braking efficiency and process safety of wind turbine brake.

Keywords

Acknowledgements

The financial support by National Natural Science Foundation of China under Grant No. 51675075 and Innovative Talents Program of Colleges and Universities in Liaoning Province under Grant No. LR2018048 is acknowledged.

Citation

Liu, Y., Hao, J., Kang, P., Sha, Z., Ma, F., Yang, D. and Zhang, S. (2020), "Research on dynamic characteristics of compensation mechanism for large-power wind turbine disc brake", Multidiscipline Modeling in Materials and Structures, Vol. 16 No. 3, pp. 595-605. https://doi.org/10.1108/MMMS-03-2019-0056

Publisher

:

Emerald Publishing Limited

Copyright © 2020, Emerald Publishing Limited

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