摘要
基于有限元法进行车用永磁电机的电磁噪声的研究,分析电机的动力学特性参数(振型、固有频率、阻尼)及电机空载和负载工况下关键工作点的电磁噪声,采用锤击法模态试验验证有限元模态分析的正确性。采用有限元法分析车用永磁电机关键工作点的电磁噪声,并通过模态试验获取电机的阻尼参数,提高电机电磁噪声分析的准确度。基于该方法可以在车用电机设计阶段预估车用永磁电机的电磁噪声特性,避免电机产生电磁共振,以振动噪声的抑制为目的进行车用永磁电机的噪声特性研究。
A permanent magnet motor for the electric vehicle electromagnetic noise was analyzed. The dynamic characteristic parameters of the motor （such as shapes, natural frequencies, damping） and the motor in no-load and load key work point electromagnetic noise was obtained based on finite element method. The good agreement between the hammer modal tested data and simulated data verifies the effectiveness and precision of the simulation approach. Structure damping of the motor obtained by experimental methods could improve accuracy of the finite element method in the motor electromagnetic noise analysis. Based on the method could be used to estimate electromagnetic noise characteristics of permanent magnet motor for electric vehicle in the motor design stage and study noise and vibration characteristics of the permanent magnet motor for the electric vehicle, avoiding motor magnetic resonance, in order to suppression motor vibration and noise.
出处
《电机与控制应用》
北大核心
2012年第9期33-37,59,共6页
Electric machines & control application
基金
国家863重大项目(2011AA11A236)
国家自然科学基金项目(51007050)
上海高校创新团队建设项目(2009)
关键词
电动汽车
永磁电机
电磁噪声
模态分析
有限元法
electric vehicle
permanent magnet motor
electromagnetic noise
modal analysis
finite
