Chapter : Machine-converted_
6 Oct 2022
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Document Summary
Three-phase induction motors are the most common and frequently encountered machines in industry simple design, rugged, low-price, easy maintenance. Wide range of power ratings: fractional horsepower to. 10 mw run essentially as constant speed from no-load to full load not easy to have variable speed control. Its speed depends on the frequency of the power source requires a variable-frequency power-electronic drive for optimal speed control. Stator core & stator winding consisting of a iron or steel frame that supports a hollow, cylindrical core core, constructed from stacked laminations, evenly spaced slots, having a number of providing the space for the stator winding. Two types of rotor are employed in 3 phase induction. Motor: squirrel cage rotor, slip ring or phase wound rotor. Squirrel-cage: conducting bars laid into slots and shorted at both ends by shorting rings. Wound-rotor: complete set of three-phase windings exactly as the stator.
