Axial flux interior PM synchronous motor: parameters identification and steady-state performance measurements

The paper presents the different measurement and identification approaches applied to a nonconventional PM synchronous machine: the novel axial flux interior permanent magnet (AFIPM) synchronous motor. The nonconventional geometry of the AFIPM motors requires a dedicated discussion on the parameters identification subject. In this paper, the standstill frequency response test and the standstill time response test on a AFIPM prototype are presented. On the basis of these tests, the d- and q-axis circuit parameters are chosen. To confirm the validity of the standstill tests, load tests have also been performed. Furthermore, the load tests provide some preliminary AFIPM machine performance results and additional information on the saturation phenomena. The d- and q-axis equivalent circuit parameters obtained by the performed measurements are analyzed and compared. Finally, the most appropriate AFIPM machine model is selected.

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