Learn · Electrical Machines - II
Lecture 60 of 91WEEK 10
Lecture 60 : Introduction to Speed Control
Prof. Tapas Kumar Bhattacharya · IIT Kharagpur
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All the lectures
- Lecture 01 : Inductance, Self and Mutual
- Lecture 02 : Relationship of Inductances in Transformer
- Lecture 03 : Equivalent Circuit from Circuit KVL Equations
- Lecture 04 : Co-efficient of Coupling , Energy Stored in Coupled Coils
- Lecture 05 : A Single Conductor Generator and Motor
- Lecture 06: Analysis of Single Conductor Generator and Motor
- Lecture 07: Analysis of Single Conductor Generator and Motor (Contd.)
- Lecture 08: Flux Density Distribution in Space and Nature emf
- Lecture 09: Flux Density Distribution in Space and Nature emf (Contd.)
- Lecture 10: From Linear to Rotating Machine
- Lecture 11 : From Linear to Rotating Machine (Contd.)
- Lecture 12 : Basic Underlying Principle of Operation of Rotating Machine
- Lecture 13 : Basic Underlying Principle of Operation of Rotating Machine (Contd.)
- Lecture 14 : Flux Density Distribution along the Air Gap
- Lecture 15 :Flux Density Distribution along the Air Gap (Contd.)
- Lecture 16 : Induced Voltage in a Coil in a Rotating Machine
- Lecture 17 : Induced Voltage in a Coil in a Rotating Machine (Contd.)
- Lecture 18 : Induced Voltage in a Coil in a Rotating Machine (Contd.)
- Lecture 19 : Induced Voltage due to Fundamental and Harmonic Components of Flux Density Distribution
- Lecture 20 : Distributed Coils Connected in Series Resultant Voltage
- Lecture 21: Distribution Factor
- Lecture 22: Pitch Factor and Winding Factor
- Lecture 23: How to decide about Short Pitch Angle ϵ
- Lecture 24 : Double Layer 3-phase Winding - An Introduction
- Lecture 25 : Winding Table for 3-phase Distributed Winding
- Lecture 26 : Winding Table for 3-phase Distributed Winding with Examples
- Lecture 27 : Winding Table for 3-phase Distributed Winding with Examples (Contd.)
- Lecture 28 : 120 degree Phase Spread Winding with Examples
- Lecture 29 : Winding Table of 120 degree Phase Spread Coils and Group Connection
- Lecture 30 : Introduction to Rotating Magnetic Field
- Lecture 31 : Rotating Magnetic Field (Contd.) , Mechanical and Electrical Speed
- Lecture 32 : Speed and Direction of Rotating Field
- Lecture 33: Synchronous Speed and How to Calculate Induced Voltage in a Coil
- Lecture 34: Introduction to Induction Motor
- Lecture 35: Introduction to Induction Motor (Contd.)
- Lecture 36: General Expression of Torque in Terms of Stator and Rotor Fields
- Lecture 37: Torque Angle and Torque Expression
- Lecture 38 : How to Fix Up Positions of Net Field, Rotor Field and Stator Field
- Lecture 39: Slip: Its Importance and Range for Motor Operation
- Lecture 40: Equivalent Circuit of 3-Phase Induction Motor
- Lecture 41: Equivalent Circuit of 3-Phase Induction Motor(Contd.)
- Lecture 42: Equivalent Circuit of 3-Phase Induction Motor (Contd.)
- Lecture 43: Expression for Electromagnetic Torque in terms of Equivalent Circuit Parameters
- Lecture 44: Maximum Electromagnetic Torque and Slip at Which it Occurs
- Lecture 45 : Typical Torque Slip Characteristic and Operating Point
- Lecture 46: Change in Torque-slip Characteristic as Supply Voltage and Rotor Resistance are Varied
- Lecture 47: Types of Induction Motor - Slip Ring Type
- Lecture 48: Introduction to Cage Induction Motor
- Lecture 49: Cage Motor Can Operate for Different Stator Poles
- Lecture 50: Core Loss in Induction Motor and Simplified Equivalent Circuit
- Lecture 51: Torque Expression from Simplified Equivalent Circuit and Introduction to Circle Diagram
- Lecture 52: Circle Diagram (Contd.)
- Lecture 53: Exact Power Flow Diagram and Circle Diagram
- Lecture 54: Circle Diagram (Contd.)
- Lecture 55: Circle Diagram: Slip Line
- Lecture 56: Circle Diagram from Test Data
- Lecture 57 : Starting of 3 Phase Induction Motor - Introduction
- Lecture 58 : DOL and Reactor Starting
- Lecture 59 : DOL and Auto Transformer Starting
- Lecture 60 : Introduction to Speed Control
- Lecture 61 : Idea of VVVF Speed Control of Induction Motor
- Lecture 62 : Speed Contro Using Two Motors
- Lecture 63 : Electrical Braking of 3 Phase Induction Motor
- Lecture 64 : Braking (Contd.)
- Lecture 65 : Introduction to Single Phase Induction Motor - Sequence Currents
- Lecture 66 : Development of Equivalent Circuit
- Lecture 67 : Development of Equivalent Circuit (Contd.)
- Lecture 68 : Torque-slip Ch. of 1 ph. I-M Running on Single Winding
- Lecture 69 : Introduction to Starting of 1ph. Induction Motor
- Lecture 70 : Expression for Starting Torque and Need for Phase Splitting
- Lecture 71 : Resistor Split 1 ph. Induction Motor
- Lecture 72 : Capacitor Split 1 ph Induction Motor
- Lecture 73 : Starting of 1 ph. Induction Motor (Contd.)
- Lecture 74 : Synchronous Machine Construction
- Lecture 75 : Synchronous Generator - Introduction
- Lecture 76 : Synchronisation
- Lecture 77 : Expression for Induced Voltage and O.C. Phasor Diagram
- Lecture 78 : Loaded Synchronous Generator - Resultant Field
- Lecture 79: Armature Reaction and Synchronous Reactance. Basic Phasor Diagram
- Lecture 80: General Mode of Operation - Rotro Field, Stator Field and Resultant Field
- Lecture 81: Complete Phasor Diagram and Expression for Complex Power
- Lecture 82: Synchronous Motor Operation, Phasor Diagram and Power Expression
- Lecture 83: Effect of Variation of Field Current in Generator
- Lecture 84: Effect of Variation Field Current in Synchronous Motor, Introduction to Salient Pole Machine
- Lecture 85: Analysis of Salient Pole Synchronous Machine
- Lecture 86: Phasor Diagram of Salient Pole Synchronous Machine for Generator and Motor Mode
- Lecture 87: Expression for Load Angle and Expression for Power
- Lecture 88: Phasor Diagrams of Salient Pole Synchronous Generator under Various Conditions
- Lecture 89: Phasor Diagrams of Salient Pole Synchronous Motor under Various Conditions
- Lecture 90: O.C and S.C Test on Synchronous Generator
- Live Session 21-02-2020