Vibration and Noise Analysis of The Motor for Electric Vehicles

Takayuki Miyakawa
Vehicle Performance Engineering Department, Nissan Motor Co.,LTD


EVs (Electric Vehicles) are a type of zero emission car. The aim is for them to be accepted favorably across a broad market, and in order to make them into attractive cars we seek superior performance in addition to silence.
Since EVs, unlike conventional internal-combustion engines, are driven by motors, the Vibration and Noise phenomenon resulting from the motor becomes a problem.
A motor’s excitation force shifts to the high frequency side compared to an ICE, so it becomes necessary for the motor’s vibration and noise analysis to be carried out into higher frequencies.
Today we will introduce the motor’s vibration and noise analysis using both magnetic field analysis and vibration and noise analysis.

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