Induction Machine

Inverted Induction Motor

Inverted Induction Machine

Inverted Induction Motor: In a wound rotor induction machine the three-phase supply can be given to the rotor windings through the slip rings and the stator terminals can be shorted (see Fig. 9.68). Such a Rotor Fed Induction Machine is also called an Inverted Induction Motor. The three-phase rotor current will generate a rotating field

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Dynamic Modelling of Induction Motor

Dynamic Modelling of Induction Motor: In general, the mechanical time-constant for any machine is much larger than the electrical time constant. Therefore, the Dynamic Modelling of Induction Motor can be simplified by neglecting the electrical transient without any loss of accuracy of results. The circuit model of Induction motor holds for constant slip but would

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Isolated Induction Generator

Isolated Induction Generator: An Induction Machine can also work as a generator even if external power supply not available and it is called Isolated Induction Generator. An Isolated Induction Generator feeding a load is shown in Fig. 9.61. The delta-connected capacitors across the generator terminals provide the magnetizing current necessary to excite the isolated generator.

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Double Cage Rotor Induction Motor

Double Cage Rotor Induction Motor

Double Cage Rotor Induction Motor: A rotor design, which though more expensive gives still better starting, and running performances than the deep-bar design, is the Double Cage Rotor Induction Motor. The double squirrel cage induction motor winding in this design consists of two layers of bars short-circuited by end rings. The upper bars have a

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Deep Bar Rotor Induction Motor

Deep Bar Rotor Induction Motor

Deep Bar Rotor Induction Motor: In this type of Deep Bar Rotor Induction Motor construction, bars of narrow width are laid down in deep semi-enclosed  slots as shown in Fig. 9.52. The magnetic leakage flux pattern set up by the bar current is indicated in dotted lines in the figure. The rotor bar can be

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