THREE-PHASE INDUCTION MOTOR

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INDUCTION Machines - 1 THREE-PHASE INDUCTION MOTOR March 2007 A. PREPARATION 1. Introduction 2. The Rotating Field 3. Rotor Currents 4. INDUCTION MOTOR Equivalent Circuit 5. Torque and Power Characteristics 6. Operation Beyond the Range 0 < s < 1 7. Determination of MOTOR Constants 8. Bibliography B. EXPERIMENT 1 . Equipment List 2. Speed and Direction of Rotation 3. Starting Current 4. No Load Test 5. Locked Rotor Test C. REPORT INDUCTION Machines - 2 INDUCTION Machines - 3 INDUCTION Machines - 4 INDUCTION Machines - 5 INDUCTION Machines - 6 INDUCTION Machines - 7 INDUCTION Machines - 8 INDUCTION Machines - 9 INDUCTION Machines - 10 INDUCTION Machines - 11 INDUCTION Machines - 12 INDUCTION Machines - 13 INDUCTION Machines - 14 Rather than the equivalent circuit of Fig.

overheating. Note that the torque exerted upon the motor by the dynamometer is indicated by the appropriate scale on the dynamometer circumference. In using the dynamometer, care should be taken (i) to avoid sudden substantial variations of control current and (ii) to avoid sudden motor starts with the control current on.

  Control, Motor