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With the growing use of electronic soft-starters for starting fixed-speed three-phase squirrel-cage induction motors with a rated power higher than 4 kW, the six-terminal star/delta-connection stator windings with delta as the nominal connection, used for the typical contactor-based star-delta starting, are not mandatory. In fact, when a motor is to be started with an electronic soft-starter, it can...
The influence of unbalance and harmonic voltage on the work of induction motors. The influence of fill quality of the rotor winding to the overheating of the machine is studied. There are conclusions about needing to improve the supply of such units in using on the locomotives.
The paper proposes a study of synchronization capability of line-start permanent magnet synchronous motor with small saliency ratio and very high cage resistance. The exemplified method is for a motor with the rated power of 3.5 kW, the synchronous speed of 3000 rpm, and the saliency ratio of 1.08.
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