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The mathematical models of the induction machine (IM) developed on the basis of the experimental frequency-response characteristics at standstill condition (SSFR) are proposed in this paper. At zero speed the transfer function of (IM) is used to obtain an exact linear parametric model. The latter ones are recommended for investigating the transient processes occurring at connections of (IM) to the...
This paper deals with the fault diagnosis of rotor asymmetries in induction motors controlled by a field oriented technique. A detection algorithm reveals the possibility to identify even just one broken rotor bar using mathematical models with and without an encoder input. Experimental results show the successful operation of the proposed scheme.
The goal of this paper is a method for the simulation of an induction motor driven with a pulse width modulation (PWM) three-phase bridge. The approach taken here decouples the circuit simulation from the electromagnetic field simulation by first constructing a performance model of the machine using 2D finite element (FE) analysis. The model consists of the complete matrix of the self- and mutual...
This paper presents the use of the coupled electric circuit with two-dimensional finite element electromagnetic field analysis (FEA) for determining the parameters of two-axis model of a three-phase cage induction motor. The designed geometric dimension of induction motor is modelled in the finite element domain. Each rotor conductor is connected in parallel and a resistance and an inductance are...
Mutual saturation between the main flux and the rotor leakage flux appears in induction machines, especially if the rotor slots are skewed or closed. Conventional saturation models used in connection with dynamic equivalent-circuit models do not take this phenomenon into account. In this paper, explicit functions for modeling the mutual saturation are proposed. The proposed functions are physically...
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