Correlating Power Measurements with Electromotor Vibration Data

The rapid evolution of electric vehicles has created new design, testing, and measuring challenges for engineers. One of the most pressing needs is vibration analysis. Engineers have struggled to separate the harmonics coming from the slotting effect (i.e., air gap permeance fluctuations due to rotor and stator slots) and harmonics coming from the inverter. This application note breaks down the approach used to evaluate and reduce the emissions from an inverter.