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Methods of Speed Control of Induction motors

Methods of Speed Control of Induction motors. Stator voltage Control Stator Frequency Control Stator Current Control V/F Control Slip power recovery Control ( Wound Rotor Induction Machine).

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Methods of Speed Control of Induction motors

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  1. Methods of Speed Control of Induction motors • Stator voltage Control • Stator Frequency Control • Stator Current Control • V/F Control • Slip power recovery Control ( Wound Rotor Induction Machine)

  2. Scalar control of ac drives produces good steady state performance but poor dynamic response. This manifests itself in the deviation of air gap flux linkages from their set values. This variation occurs in both magnitude and phase. Vector control (or field oriented control) offers more precise control of ac motors compared to scalar control. They are therefore used in high performance drives where oscillations in air gap flux linkages are intolerable, e.g. robotic actuators, centrifuges, servos, etc.

  3. Stator Voltage Control Applications : Fans & Pump Drives

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