文献类型：期刊文献

中文题名：一种船用感应电机的电磁-机械激励分离实验装置

英文题名：A Shipboard Induction Motor Electromagnetic-mechanical Excitation Separation Experimental Device

作者：孔德峰[1];贾宝柱[1];廖志强[1];邓帮林[1]

机构：[1]广东海洋大学船舶与海运学院,广东湛江524088

年份：2023

卷号：52

期号：9

起止页码：17

中文期刊名：机电工程技术

外文期刊名：Mechanical & Electrical Engineering Technology

基金：国家自然科学基金资助项目(52201355);广东海洋大学科研启动经费资助项目。

语种：中文

中文关键词：感应电机;电磁激励;机械激励;激励分离

外文关键词：induction motor;electromagnetic excitation;mechanical excitation;excitation separation

中文摘要：为分离船用感应电机振动的电磁和机械激励,设计一种能够有效分离两者的测试系统。该系统在基础平板上安装电机运转及测量相关设备,其与传统电机测试系统的关键区别在于巧妙地分离了电机机座与端盖,并通过大刚度的底板连接。因为端盖远离电机本体,几乎不受电磁力的作用,通过测量端盖和机座的振动并对比两者数值以达到“电磁”激励和“机械”激励的解耦,并通过断电进一步验证分离效果。结果表明:断电前机座测点振动幅值是端盖振动幅值的3倍多,且断电后机座振动幅值随电磁力的消失而瞬间降至±1.5 m/s^(2),而端盖的振动加速度缓慢减小,说明端盖上主要承受转子旋转导致的轴承振动等机械激励的影响,并随转速的降低而缓慢下降,这表明电磁-机械激励分离试验装置可以有效地将二者分离开。

外文摘要：In order to separate the electromagnetic and mechanical excitations of the induction motor vibration,a testing system capable of effectively isolating both factors is designed.In the system,the motor and its related measurement equipment are installed on a baseplate.The key difference between this system and a conventional motor testing system lies in cleverly separating the motor frame from the end cover and connecting them through a highly rigid bottom plate.As the end cover is physically distant from the motor body and is barely affected by electromagnetic forces,the vibrations of the end cover and the motor frame are measured and their values are compared to achieve the decoupling of"electromagnetic"and"mechanical"excitations.Further verification of the separation effect is performed by powering off the motor during testing.The results show that the vibration amplitude at the motor frame measuring point is over three times higher than that at the end cover before powering off;after powering off,the vibration amplitude at the motor frame instantaneously reduces to±1.5 m/s^(2) with the disappearance of electromagnetic forces,while the vibration acceleration at the end cover slowly decreases.This indicates that the end cover mainly experiences mechanical excitations,such as bearing vibration caused by rotor rotation,and it decreases gradually with the decrease in rotational speed.These results show that by using the electromagnetic-mechanical excitation separation test device,the two types of excitations can be effectively isolated.