Identification of the Stator Inductance of Synchronous Reluctance Motors by “Voltage Stepping Method”

To design and optimize the controller of an electric drive system, the model and parameters of an electrical machine must be well known. In this paper, a new experimental method for identifying a stator inductance of a synchronous reluctance motor, called “Voltage Stepping Method” is presented. The first part of the paper briefly presents the model of a reluctance synchronous motor in state space. After that, we conduct an experiment to identify the inductance parameters of a 15 kW, 8.000 rpm synchronous reluctance motor. The identified parameters are used to simulate the motor performance. The simulation results are compared with the measurements from experimentation. The similarity between the simulation results (stator current and its components id,iq) and experimental measurement indicates the reliability of the new identification method