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INDUCTION MOTOR steady-state model squirrel cage

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INDUCTION MOTOR steady-state model squirrel cage

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    1. INDUCTION MOTOR steady-state model (squirrel cage) MEP 1422 ELECTRIC DRIVES

    2. Construction

    3. Construction

    4. Construction

    5. Construction

    6. Phase a sinusoidal distributed winding

    7. Sinusoidal winding for each phase produces space sinusoidal MMF and flux Sinusoidal current excitation (with frequency ?s) in a phase produces space sinusoidal standing wave MMF Combination of 3 standing waves resulted in MMF wave rotating at:

    9. Rotating flux induced: emf in stator winding (known as back emf) Emf in rotor winding Rotor flux rotating at synchronous frequency

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