Abstract: This paper presents the Park model of a solid-rotor induction motor. In this model, the
dynamic state of the motor is described by integer and noninteger order differential equations. The
skin effect in the solid rotor was represented by resistance and inductance with lumped constants, and
the fractional inductance was dependent on the frequency of the eddy current induced in the rotor.
The parameters of the equivalent circuit were determined by the standstill frequency response test
with the stationary machine on the basis of the finite element method analysis of the electromagnetic
field. A simulation of the dynamic states of the induction motor with a solid rotor was carried out
based on the calculated parameters. The simulation was carried out using a program written in
the Matlab environment. The simulations show that the electromagnetic moment during the motor
start-up is about 2 times greater than the initial torque in the steady state. On the other hand, the
maximum value of the stator current during the start-up is about 1.5 times greater than the effective
value of the inrush current in the steady state. A good agreement was obtained between the results
calculated from the distribution of the magnetic field by the finite element method and the results
obtained on the basis of the equivalent circuit and, in the case of the electromagnetic torque, with the
results obtained from the transient state during motor reversal.
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