Parameter Identification of a Synchronous Reluctance Motor by using a Synchronous PI Current Regulator at a Standstill

Abstract

This paper proposes an estimation algorithm for the electrical parameters of synchronous reluctance motors (SynRMs) by using a synchronous PI current regulator at standstill. In reality, the electrical parameters are only measured or estimated in limited conditions without fully considering the effects of the switching devices, connecting wires, and magnetic saturation. As a result, the acquired electrical parameters are different from the real parameters of the motor drive system. In this paper, the effects of switching devices, connecting wires, and the magnetic saturation are considered by simultaneously using the short pulse and closed loop equations of resistance and synchronous inductances. Therefore, the proposed algorithm can be easily and safely implemented with a reduced measuring time. In addition, it does not need any external or additional measurement equipment, information on the motor's dimensions, and material characteristics as in the case of FEM. Several experimental results verify the effectiveness of the proposed algorithm.

An encoderless high-performance synchronous reluctance motor drive

“…while the stator currents are calculated using the equations as a function of currents, as described in [6][7][8]. In this paper, these parameters were obtained using the methodology presented in [8]. The impact of cross-magnetic saturation in the values of and for the motor used in the experimental tests is shown in Fig.…”

“…By definition, the active flux a  of an ac machine is the flux that multiplied by qs i gives the torque developed by the motor [13]. The stator flux of a SynRM and the active flux are given by (8) and (9)…”

Predictive Stator Flux and Load Angle Control of Synchronous Reluctance Motor Drives Operating in a Wide Speed Range

“…The values of the apparent inductances stored in the 2-D lookup tables were obtained offline using the VI method mentioned in [30]. According to this method, one winding is supplied by a controllable dc source, while the other two windings, series connected, are supplied by a variable ac voltage source.…”

Synchronous Reluctance Motor Performance Based on Different Electrical Steel Grades

“…To validate the computed results using the FEM analysis, some measurements for L d (i d ) and L q (i q ) are considered using the conventional VI method given in [10]. Fig.…”