车用发电机噪声试验与仿真分析  

Noise Test of Vehicle Generator and Simulation Analysis

作　　者：尚伟 赵忠义[1] 王慎玉 SHANG Wei;ZHAO Zhong-yi;WANG Shen-yu(College of Mechanical Engineering and Automation,Liaoning University of Technology,Jinzhou 121001,China)

机构地区：[1]辽宁工业大学机械工程与自动化学院,辽宁锦州121001

出　　处：《辽宁工业大学学报（自然科学版）》2024年第4期229-233,共5页Journal of Liaoning University of Technology(Natural Science Edition)

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。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 

分 类 号：TB857.3[一般工业技术—摄影技术]