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This paper presents an analytical method for describing a single-stator axial-flux induction machine with squirrel cage. First, all kinds of axial-flux induction machines are described and their advantages and disadvantages are discussed. Afterwards, the current sheet theory and its application to the single-stator axial-flux induction machine is explained. Based on this, the derivation of the magnetic...
Earlier studies have shown that it is possible to reduce the disturbing effects of space harmonics by making changes to the winding arrangement and stator core design. This paper presents the calculation of these space harmonic effects, including the induced harmonic voltages, currents and conduction losses in the rotor by using a linear equivalent circuit. The calculations were performed for two...
In this paper, stator and rotor failures in squirrel-cage induction machines are modeled using the magnetic equivalent circuit (MEC) approach. Failures associated with stator winding and rotor cage are considered. More specifically, stator inter-turn short circuit and broken rotor bar failures are modeled. When compared to conventional modeling techniques, the MEC modeling approach offers two main...
In this paper, considerations on the simulation of single-speed, multi-connection (or multi-flux level), three-phase, squirrel-cage, induction motors using the per-phase exact equivalent circuit, with fixed voltage, are discussed. The principles discussed also apply to simple star-delta connection change. Simulated and experimental results are presented, validating the proposed simulation strategy...
This paper complements others by the same authors [1], [2], where the general concepts, design calculations and constructional differences of an induction motor with a novel winding arrangement were presented, together with a magnetic analysis. In the present paper, the equivalent circuit for the space harmonics of the mmf is described and the slips and equivalent circuit parameters for each space...
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