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Simulating multi-connection, three-phase, squirrel-cage, induction motors by means of changing the per-phase equivalent circuit parameters

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 and, additionally, evidencing the advantages associated with the stator winding connection change as a function of the motor actual load.