Sensitivity Analysis of a Numerical High-Frequency Impedance Model for Rotating Electrical Machines

The prediction of the high-frequency impedance
response in rotating electrical machines is utilized to forecast
undesired phenomena such as electromagnetic interference and
leakage currents. This can be achieved in pre-prototyping
design stages by building an equivalent circuit of the machine
winding and estimating its parameters numerically. The main
objective of this type of model is to predict the trends that
the impedance curves will follow if changes on the machine
design take place. This article analyzes the effect of the model
input parameters on the impedance curves in the two main
propagation modes. In addition, the impact of the slot geometry,
material characteristics and the winding connection is studied.