Frequency domain solution method for electromagnetic influence analysis on torsional vibrations

IF 4.3 2区 工程技术 Q1 ACOUSTICS Journal of Sound and Vibration Pub Date : 2024-10-24 DOI:10.1016/j.jsv.2024.118780
Sampo Laine , Urho Hakonen , Hannu Hartikainen , Raine Viitala
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Abstract

In electric motor-driven machines, mechanical torsional dynamics are nonlinearly coupled with the electrical system through the electromagnetic torque and the counter-electromotive force. In this paper, an approach based on small-signal linearization is proposed for modeling the steady-state torsional dynamics of the coupled system. Using the linearized model, resonance interference diagrams, torsional response, and stability can be evaluated rapidly across numerous operating points, while accurately accounting for the electromagnetic effects. The model is validated with conventional time-stepping simulations of two induction machines. An example analysis of a 3 MW motor-driven compressor train displays the modification of torsional properties due to the electromagnetic coupling effect and explains the mechanism of torsional destabilization. Finally, previously published measurements of a 37 kW motor test bench are considered to validate the instability of the elastic torsional mode predicted by the model.
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扭转振动电磁影响分析的频域求解方法
在电机驱动的机器中,机械扭转动力学通过电磁转矩和反电动势与电气系统非线性耦合。本文提出了一种基于小信号线性化的耦合系统稳态扭转动力学建模方法。利用线性化模型,可以快速评估多个工作点的共振干扰图、扭转响应和稳定性,同时准确地考虑电磁效应。该模型通过对两台感应电机进行传统的时间步进仿真进行了验证。对 3 兆瓦电机驱动压缩机组的实例分析显示了电磁耦合效应对扭转特性的影响,并解释了扭转失稳的机理。最后,考虑了之前公布的 37 千瓦电机试验台的测量结果,以验证模型预测的弹性扭转模式的不稳定性。
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来源期刊
Journal of Sound and Vibration
Journal of Sound and Vibration 工程技术-工程:机械
CiteScore
9.10
自引率
10.60%
发文量
551
审稿时长
69 days
期刊介绍: The Journal of Sound and Vibration (JSV) is an independent journal devoted to the prompt publication of original papers, both theoretical and experimental, that provide new information on any aspect of sound or vibration. There is an emphasis on fundamental work that has potential for practical application. JSV was founded and operates on the premise that the subject of sound and vibration requires a journal that publishes papers of a high technical standard across the various subdisciplines, thus facilitating awareness of techniques and discoveries in one area that may be applicable in others.
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