Eet3082 binod kumar sahu lecture_00
- 1. Electrical Machines-II 6th Semester, EE and EEE By Dr. Binod Kumar Sahu Associate Professor, Electrical Engg. Siksha ‘O’ Anusandhan, Deemed to be University, Bhubaneswar, Odisha, India introduction
- 2. 2 Rotating Electrical Machines ACDC Permanent Magnet Wound Field Separately Excited Self Excited Synchronous Induction Brushless DC Hysteresis Sine wave Reluctance Permanent Magnet Wound Field Salient Pole Non-salient Pole Three Phase Single Phase Wound Rotor Squirrel Cage Split Phase Shaded Pole Universal Resistance Start Capacitor Start Capacitor Start Capacitor Run
- 3. Topics to be covered: - 3 1. Three-Phase Alternator. 2. Three-Phase Synchronous Motor. 3. Starting & Breaking of DC Motor. 4. Starting, Breaking and Speed Control of three-phase Induction Motor. 5. Electronic Motors. 6. Motor Insulation System. 7. Motor Protection.
- 4. 4 Toipc-1 Alternator Learning Outcomes: - Students will be able to: Classify different types of alternators from application and construction point of view. Know various terms related to three-phase AC winding. Analyse the effect of short-pitched and distributed winding. Analyse the effect of armature reaction. Determine voltage regulation of cylindrical pole type alternator using EMF, MMF and ZPF method. Analyse the effect of saliency in salient pole alternator. Determine the voltage regulation in salient pole alternator. Know the process of synchronizing two alternators and one alternator with infinite bus. Analyse the effect of varying excitation and mechanical power input on an alternator operating in synchronism with another alternator or an infinite bus.
- 5. 5 Toipc-2 Synchronous motors Learning Outcomes: - Students will be able to: Know the principle of operation of synchronous motor. Understand the various starting methods employed for starting a synchronous motor. Analyse the power angle equation for both types of synchronous motors. Analyse the effect of varying excitation and mechanical load on a synchronous motor. Design the rating of a suitable synchronous motor for power factor improvement.
- 6. 6 Toipc-3 Starting and Braking of DC Motor Learning Outcomes: - Students will be able to: Know the necessity of starter for a DC motor. Design a suitable starting resistance for a DC motor. Understand the various methods adopted for braking a DC motor and analyse the behaviour of DC motor under various braking modes of operation.
- 7. 7 Toipc-4 Starting, Braking and Speed Control of 3-Phase Induction Motor Learning Outcomes: - Students will be able to: Know the necessity of starter for an induction motor. Analyse the various methods of starting an induction motor. Understand the various methods adopted for braking an induction motor and analyse the behaviour of induction motor under various braking modes of operation. Know the various methods of speed control of an induction motor.
- 8. 8 Toipc-5 Electronic Motors Learning Outcomes: - Students will be able to: Understand the basic concept of electronic motors their types, working principles and applications.
- 9. 9 Toipc-6 Motor insulation systems Learning Outcomes: - Students will be able to: Know the various types of insulations available for motor system. Choose a proper insulation for a particular motor application.
- 10. 10 Toipc-7 Motor Protection Learning Outcomes: - Students will be able to: Know the various types of protection schemes available for electric motors to improve their reliability.
- 11. 11 Thank you