Calculation and analysis of vehicle vibration and noise of permanent magnet synchronous motor applied in electric vehicle
To define the characteristics of NVH(noise,vibration,and harshness) in the process of electric vehicle motor designing,the principle and feature of the space radial force wave of the motor were analyzed based on the motor electromagnetic field theory.According to its features,a method to analyze the NVH of the motor with modal superposition was proposed.The NVH characteristics of a permanent magnet synchronous motor were calculated with this method.Harmonic responses of main radial force waves at different frequencies were first calculated separately with finite element software electromagnetic and structural coupling analysis method,and then superposed to produce the estimates of the vibration and noise of the motor within its operating range.Finally,the accuracy of the calculation method and the correctness of the theoretical analysis are verified by the comparison between the calculation and the experimental results.
permanent magnet synchronous motorvibration and noiseelectromechanical couplingmodal superpositionhammer modal experiments
NETL
NSTL
万方数据
维普
