Comparison of two magnetic saturation models of induction machines

Comparison of Two Magnetic Saturation Models of Induction Machines and Experimental Validation

“…Self-excited operation requires capacitors connected in parallel with the loads applied to the stator windings. Based on (1), the model of SEIG with resistive loads in the rotating reference frame F-G can be put into the following form [24] EX FX…”

“…It does not contradict the general conclusions of [11], [19]- [22] but it adds new insights to the dynamic crosssaturation validation through experiments that avoid inaccuracies of the previous investigations. The paper includes the theoretical results of [24], updated based on the recent methodology from [25] that explains the similarity of the models at the beginning of the transients. Compared to [24], improvements were made by testing a different SEIG and the accuracy of the results was enhanced through the following:…”

“…The paper includes the theoretical results of [24], updated based on the recent methodology from [25] that explains the similarity of the models at the beginning of the transients. Compared to [24], improvements were made by testing a different SEIG and the accuracy of the results was enhanced through the following:…”

“… Measurements of all three line-to-line voltages instead of a single one, which enables the reconstruction of an instantaneous voltage magnitude estimate and a clearer representation of voltage magnitude perturbations.  Investigation of the voltage deviations caused by the velocity, capacitance and load perturbations instead of only a load change in [24], including the determination of conditions maximizing the difference.  Additional tests using periodic voltage perturbations caused by periodic capacitance and velocity changes.…”

Linearized State-Space Model of a Self-Excited Induction Generator Suitable for the Design of Voltage Controllers

“…However, the model is obtained from the simplified nonlinear SEIG model neglecting the time derivative of the magnetizing inductance (crosssaturation effect) and ignoring additional terms in the linearized model. Such an approach is only correct for analyzing the system behavior around the zero steady state (self-excitation onset), but is questionable otherwise [15], [16]. In [17], a linearized SEIG model is developed for the case of the SEIG feeding an induction motor and provides useful insights into the dynamics of the system.…”