Prediction of performance of a wound-field segmented-rotor flux-switching synchronous motor using a dq-equivalent model

The steady-state performance of a type of three-phase flux-switching synchronous motor employing a segmented-rotor and wound-field excitation is investigated using the standard dq model for three phase AC machines. The unconventional topology of the motor presents significant departure from the basic assumptions of the dq theory, even though the motor may be operated from a drive incorporating generic dq control regimes. The equivalent dq inductances and flux linkages are calculated from finite element simulation results and applied in predicting the steady-state performance of the motor. The credibility of the dq model to predict performance of the motor over its operating range is enhanced by accounting for the cross-coupling inductances.