车用发电机噪声试验与仿真分析
Noise Test of Vehicle Generator and Simulation Analysis
尚伟 1赵忠义 1王慎玉1
作者信息
- 1. 辽宁工业大学 机械工程与自动化学院,辽宁 锦州 121001
- 折叠
摘要
针对车用爪极发电机噪声来源问题,基于噪声试验及仿真对噪声来源进行识别.首先,对爪极发电机进行空、负载噪声试验,利用阶次分析法对发电机在空、负载工况下进行阶次分析;然后,对发电机结构部件在自由状态下进行模态仿真,通过对模型结构进行等效假设,得到前、后端盖与定子的前 3 阶振型和固有频率;最后,结合噪声试验与仿真结果进行对比分析.结果表明:发电机在中低转速下为电磁噪声,高转速下主要为空气噪声,前、后端盖和定子与发电机在运行工况下产生结构共振并辐射出噪声.
Abstract
In view of the noise source problem of the vehicle claw pole generator,the noise source is identified based on noise test and simulation.Firstly,the claw pole generator is tested with empty and load noise,and the order analysis method is used to analyze the generator in empty and load conditions.Then,the modal simulation of the generator structural components in the free state is carried out,and the first 3 mode shapes and natural frequencies of the front and rear end covers and stators are obtained by making equivalent assumptions about the model structure.Finally,a comparative analysis is conducted based on the noise test and simulation results.The results show that the generator produces electromagnetic noise at low and medium speeds,mainly air noise at high speeds,and the front and rear covers,as well as the stator and generator,generate structural resonance and emit noise during operation.
关键词
爪极发电机/阶次分析/有限元仿真/结构共振Key words
claw pole generator/order analysis/finite element simulation/structural resonance引用本文复制引用
出版年
2024
NETL
NSTL
万方数据