Transient Vibration Analysis of Asynchronous Motor in Soft Startup Process Using Co-Simulation on Control Strategy and Multi-Physical Domain Finite Element Method

doi:10.7652/xjtuxb202007019

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Transient Vibration Analysis of Asynchronous Motor in Soft Startup Process Using Co-Simulation on Control Strategy and Multi-Physical Domain Finite Element Method

更新时间：2025-07-09

- Transient Vibration Analysis of Asynchronous Motor in Soft Startup Process Using Co-Simulation on Control Strategy and Multi-Physical Domain Finite Element Method
- Vol. 54, Issue 7, Pages: 158-167(2020)
- 作者机构：
  
  西安交通大学机械工程学院,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202007019
  CLC： TM343
- Online First：10 July 2020，
  
  Published：2020
- 稿件说明：
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Transient Vibration Analysis of Asynchronous Motor in Soft Startup Process Using Co-Simulation on Control Strategy and Multi-Physical Domain Finite Element Method[J]. 2020, 54(7): 158-167.
DOI：

Transient Vibration Analysis of Asynchronous Motor in Soft Startup Process Using Co-Simulation on Control Strategy and Multi-Physical Domain Finite Element Method[J]. 2020, 54(7): 158-167. DOI： 10.7652/xjtuxb202007019.

摘要

为抑制异步电机软启动过程因电磁力所致的瞬态振动

提出了一种联合控制策略与多物理域有限元仿真的电机瞬态振动分析方法。构建了电机软启动过程的电磁力解析模型

用于定性分析低阶电磁力波频率和幅值在启动过程中的变化规律。以直流换流站的主泵电机为研究对象

考虑电机输入和负载之间的耦合影响

建立其软启动过程的仿真模型

为后续的电磁力分析提供初始条件; 基于准稳态假设将电机软启动过程看作是多个离散的准稳态工况点的集合; 采用二维电磁有限元计算每个准稳态工况点的瞬态磁场

对所有准稳态下的电磁力插值拟合以获取整个启动过程的电磁力

作为振动仿真的激励; 通过三维完全法瞬态动力学计算随时空变化的瞬态电磁力所引起的结构振动响应。仿真结果在时域波形和频域成分两方面均与现场实测振动信号较好地吻合

该方法可为分析各型电机在非稳态工况下产生的瞬态振动提供参考。

Abstract

To reduce the transient vibration induced by electromagnetic force during the soft-startup process of an asynchronous motor

a method for analy-ing the transient vibration using co-simulation on control strategy and multi-physical domain finite element method(FEM)is presented. An electromagnetic force analytical model to qualitatively analy-e the frequency and amplitude of low-order electromagnetic force in the starting process is constructed. Aiming at the coupling effect between the input and the load

a simulation model of main pump motor during soft-startup process is established to provide initial conditions for subsequent electromagnetic analysis. Based on the quasi-steady state assumption

the motor-s soft-startup process is regarded as a set of discrete quasi-steady states. Each transient magnetic field under quasi-steady state is evaluated by the 2D electromagnetic FEM

then all the electromagnetic forces are interpolated to obtain the electromagnetic force in the entire star

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references

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