Transcription of CHAPTER 3 INDUCTION MOTOR AND DIFFERENT SPEED …
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CHAPTER 3 INDUCTION MOTOR AND DIFFERENT SPEED …
57 CHAPTER 3 INDUCTION MOTOR AND DIFFERENT SPEED CONTROL METHODS Page No Introduction 58 Three Phase INDUCTION MOTOR 58 Stator 60 Rotor 60 Working principle of three phase INDUCTION MOTOR 62 Equivalent Circuit 63 Slip 65 DIFFERENT SPEED Control Methods 66 Stator voltage control method 66 Frequency control method 68 Volts Hertz (V/F) control method 68 Conclusion 71 58 CHAPTER 3 INDUCTION MOTOR AND DIFFERENT SPEED CONTROL METHODS Introduction This CHAPTER describes the construction, principal of operation, start up consideration and the basic SPEED control methods for INDUCTION MOTOR . Three Phase INDUCTION MOTOR (IM) The three-phase INDUCTION motors are also called as asynchronous motors, which are most commonly used type of MOTOR in industrial applications. In particular, the squirrel-Cage INDUCTION motors are widely used electric MOTOR in home and industrial applications, because these machines are very economical, rugged and reliable.
are available in single-phase as well as poly-phase (three-phase).The three phase machines are used most often in variable-speed drives where the torque requirement is more. An induction motor or asynchronous motor is a type of alternating current motor
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