A Study on the Dynamics of an AC Induction Motor Rotor Based on the Analysis of Free Response at Impulse Excitation

Bulletin of the Polytechnic Institute of Iași. Machine constructions Section Pub Date : 2022-09-01 DOI:10.2478/bipcm-2022-0025

N. Bumbu, M. Horodinca

{"title":"A Study on the Dynamics of an AC Induction Motor Rotor Based on the Analysis of Free Response at Impulse Excitation","authors":"N. Bumbu, M. Horodinca","doi":"10.2478/bipcm-2022-0025","DOIUrl":null,"url":null,"abstract":"Abstract This paper focuses on a topic frequently involved in the dynamics of transient phenomena on rotary machines driven by an AC induction motor supplied by a three-phase four-wire electrical system: the free response of the dynamic system mirrored in the torsional vibrations of its rotor. This dynamic system is reducible at a single degree of freedom system, equivalent of a spring-mass-damper but as a torsional vibratory system composed of the motor rotor (having a moment of inertia) the rotating magnetic field (having a torsional stiffness) and a hypothetical damper (generating a viscous damping mainly due to the air friction). This free response is useful mostly to characterize the transmissibility related to the conversion of information from mechanical to electrical power through this dynamic system. A simple computer-assisted setup is used to describe indirectly and to analyze the free response (generated when the motor is switched-on or after star to delta commutation sequence), using the active electrical power absorbed by the motor.","PeriodicalId":244525,"journal":{"name":"Bulletin of the Polytechnic Institute of Iași. Machine constructions Section","volume":"24 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bulletin of the Polytechnic Institute of Iași. Machine constructions Section","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.2478/bipcm-2022-0025","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 0

Abstract

Abstract This paper focuses on a topic frequently involved in the dynamics of transient phenomena on rotary machines driven by an AC induction motor supplied by a three-phase four-wire electrical system: the free response of the dynamic system mirrored in the torsional vibrations of its rotor. This dynamic system is reducible at a single degree of freedom system, equivalent of a spring-mass-damper but as a torsional vibratory system composed of the motor rotor (having a moment of inertia) the rotating magnetic field (having a torsional stiffness) and a hypothetical damper (generating a viscous damping mainly due to the air friction). This free response is useful mostly to characterize the transmissibility related to the conversion of information from mechanical to electrical power through this dynamic system. A simple computer-assisted setup is used to describe indirectly and to analyze the free response (generated when the motor is switched-on or after star to delta commutation sequence), using the active electrical power absorbed by the motor.

查看原文本刊更多论文

基于脉冲激励下自由响应分析的交流感应电机转子动力学研究

摘要本文主要研究三相四线制电力系统中交流感应电机驱动的旋转机械瞬态动力学中经常涉及的一个问题:动态系统的自由响应反映在转子的扭转振动上。该动力系统可约为单自由度系统，相当于弹簧-质量-阻尼器，但作为由电机转子(具有转动惯量)，旋转磁场(具有扭转刚度)和假设阻尼器(主要由于空气摩擦产生粘性阻尼)组成的扭转振动系统。这种自由响应主要用于表征与通过该动态系统从机械到电力的信息转换有关的传递率。一个简单的计算机辅助设置用于间接描述和分析自由响应(当电机接通或在星形到三角形换向顺序之后产生)，利用电机吸收的有功功率。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Bulletin of the Polytechnic Institute of Iași. Machine constructions Section

自引率

0.00%

发文量