| Abstract |
The paper describes a HF equivalent circuit for the stator winding of three-phase AC motors, valid in a wide frequency range. The model fitting is based on winding complex impedance
measurements. Both the phase-to-phase and the phase-to-ground impedances are considered. The proposed model can be utilized in theoretical and numerical HF analysis of inverter-fed AC motors. In this case, the equivalent circuit allows to predict both differential- and common-mode conducted EMI. Furthermore, also transient effects can be predicted when the analysis is performed in the time domain. The numerical results, obtained by means of PSpice, are compared with the corresponding experimental tests in both frequency and time domains. |
