Overview
NVH is the one of most critical issues in the drivelines development of EV/ HEV. There are several points to be considered for the NVH analysis of the driveline. To evaluate the NVH of the driveline properly, it is necessary to consider not only electric machines but also other components such as the housing, bearings and the gear box. It is also essential to evaluate not only one single operating condition, but a wide range of them.
The solution is to use JMAG together with Romax. Using JMAG and Romax makes the NVH analysis of drivelines easy and accurate.
Fig. 1 NVH analysis using JMAG and Romax
JMAG calculates the torque ripples and forces on the stator tooth for different operating speeds. Romax imports the forces and apply the transmission error. The peaks due to different sources can be observed.
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