Dynamic investigation of 650 W roof-top horizontal wind turbine rotor system supported by radial permanent magnet bearings

IF 2.1 Q2 ENGINEERING, MULTIDISCIPLINARY Cogent Engineering Pub Date : 2023-12-08 DOI:10.1080/23311916.2023.2288436

G. Chalageri, S. Bekinal, M. Doddamani

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Abstract

Abstract The present work focuses on the rotor dynamic properties of a 650 W roof-top horizontal axis windturbine (HAWT) rotor supported by radial permanent magnet bearings (PMBs). Radial PMBs were designed and optimized concerning the rotor of a wind turbine for maximum stiffness. Initially, a generalized design and optimization process for multi-ring radial PMBs (MrRPMBs) with a radial air gap is presented to get the maximized force and stiffness per magnet volume. The proposed mathematical model is validated using the Finite Element (FE) analysis tool Ansys for chosen rotor dimensions. Then, the same optimization technique was extended for HAWT rotor bearings to extract the optimized multi-ring radial bearing parameters. The dynamic investigation is performed to study the effect of bearing parameters on the rotor-bearing modal frequency and dynamic amplitude of a rotor. Firstly, the dynamic investigation was performed for the conventional deep groove ball bearings (DGBs) supported rotor, considering the effect of bearing span length. Secondly, the dynamic response was analyzed for the rotor system through a hybrid bearing set (HBS) by replacing DGB with PMB. Finally, DGBs are completely replaced by radial PMBs. FEanalysis was performed using the Ansys workbench rotor dynamic tool for all the bearing combinations.

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由径向永磁轴承支撑的 650 W 屋顶水平风力涡轮机转子系统的动态研究

摘要本文研究了径向永磁轴承支撑的650 W屋顶水平轴风力发电机(HAWT)转子的动力学特性。针对某型风力机转子，以最大刚度为目标，对径向PMBs进行了优化设计。首先，提出了具有径向气隙的多环径向永磁磁体的广义设计与优化过程，以获得最大的单位磁体体积的力和刚度。采用有限元分析工具Ansys对所选转子尺寸进行了验证。然后，将同样的优化技术扩展到HAWT转子轴承，提取优化后的多环径向轴承参数。通过动力学研究，研究了轴承参数对转子的模态频率和动幅值的影响。首先，考虑轴承跨长的影响，对传统深沟球轴承(DGBs)支承转子进行了动力学研究。其次，分析了以PMB代替DGB的混合轴承组(HBS)转子系统的动态响应。最后，dgb完全被径向pmb所取代。利用Ansys workbench转子动力学工具对所有轴承组合进行有限元分析。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Cogent Engineering ENGINEERING, MULTIDISCIPLINARY-

CiteScore

4.00

自引率

5.30%

发文量

213

审稿时长

13 weeks

期刊介绍： One of the largest, multidisciplinary open access engineering journals of peer-reviewed research, Cogent Engineering, part of the Taylor & Francis Group, covers all areas of engineering and technology, from chemical engineering to computer science, and mechanical to materials engineering. Cogent Engineering encourages interdisciplinary research and also accepts negative results, software article, replication studies and reviews.