Study on the Vehicle Cabin Noise Employing the Interfacial Friction in Double Layered Frames Used in Electric Vehicle Traction Motors

Park, Jongchan; Lee, Hyeoun Dong

doi:10.4271/2013-01-2590

Cited by 3 publications

(1 citation statement)

References 16 publications

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“…In [14], in order to weaken the electromagnetic force harmonics caused by tooth harmonics and thus effectively suppress the electromagnetic noise of the motor, the analytical equation of radial electromagnetic force waves of the rotor's segmented diagonal poles is derived, the suppression mechanism of segmented diagonal poles on electromagnetic noise of permanent magnet synchronous motor is analyzed, and the relationship between the number of different diagonal pole segments and the weakened tooth harmonic order is discussed. For the V-rotor permanent magnet motor for 30 kW electric vehicle drive, an optimization scheme using a new magnetic isolation bridge is proposed in the literature [15] and simulated under several characteristics, and then the feasibility and validity are verified through prototype experiments In [16], the authors used an experimental method to analyze the effect of the friction damping coefficient between the water jacket and the casing on the radiated noise of the motor, and the results showed that changing the friction coefficient between the water jacket and the casing can effectively improve the motor noise problem. In [17], the authors proposed a method for fractional-slot permanent magnet synchronous motors to inject a certain compensation current into the stator winding to cancel the radial force harmonics with the lowest modulus and thus suppress the electromagnetic vibration of fractional-slot motors.…”

Section: Introductionmentioning

confidence: 99%

Simulation, Verification and Optimization Design of Electromagnetic Vibration and Noise of Permanent Magnet Synchronous Motor for Vehicle

Zhang

Meng

et al. 2022

Energies

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Aiming at the electromagnetic vibration and noise problem of an 8-pole 48-slot permanent magnet synchronous motor for a vehicle, the multi-physics coupling simulation model of the motor is introduced to optimize the rotor structure of the motor to reduce the vibration and noise of the permanent magnet synchronous motor. The effectiveness of the research method is verified by the bench test in the anechoic chamber. Finite element software was used to establish the stator core and system model considering the anisotropy of materials, and the simulation model was verified by modal experiment. For the 2in1 electric drive system, the electromagnetic-structure-acoustic multi-physics coupling noise prediction model is established. Based on the three-dimensional distributed electromagnetic force excitation, the electromagnetic radiation noise of the motor under full load acceleration is calculated, and the characteristics of electromagnetic noise are analyzed. The accuracy of the electromagnetic-structure-acoustic multi-physics coupling model of permanent magnet synchronous motor is verified by the bench test results of the anechoic chamber. By changing the angle and shape of the motor rotor, the cogging torque ripple between the stator and the rotor is reduced, and the 48th order harmonic amplitude is reduced. Finally, the optimized sample is tested on the vehicle, and the 48th order electromagnetic noise can be reduced by 5–15 dB(A). The accuracy of the electromagnetic-structure-acoustic multi-physics coupling model of permanent magnet synchronous motor is verified by the bench test results of the anechoic chamber. Therefore, the research results can be further used for the design and development of a vehicle permanent magnet synchronous motor and the research on the mechanism of electromagnetic vibration and noise.

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Section: Introductionmentioning

confidence: 99%