Learn · Electrical Machines - I
Lecture 49 of 94Week 6
Lecture 49 : Parallel Operation of Transformers - II
Prof. Tapas Kumar Bhattacharya · IIT Kharagpur
Credits and licence
- From
- Electrical Machines - I, IIT Kharagpur (at NPTEL)
- Licence
- CC BY-NC-SA, as NPTEL states it. Non-commercial use only.
- Attribution
- NPTEL states: "Distributed under Creative Commons Attribution-ShareAlike / CC BY - NC - SA", beside a BY-NC-SA badge.
- Who can watch
- Tweens profiles and older. How courses are placed
All the lectures
- Lecture 01 : Magnetic Circuit and Transformer
- Lecture 02 : Magnetising Current from B-H Curve
- Lecture 03 : Ideal Transformer, Dot Convention and Phasor Diagram
- Lecture 04 : Operation of Ideal Operation with Load Connected
- Lecture 05 : Equivalent Circuit of Ideal Transformer
- Lecture 06 : Rating of Single Phase Transformer: Rated Current and Rated Voltage with Example
- Lecture 07 : Transformer with Multiple Coils
- Lecture 08 : Modelling of Practical Transformer - I
- Lecture 09 : Modelling of Practical Transformer - II
- Lecture 10 : Modelling of Practical Transformer - III
- Lecture 11 : Core Loss - Eddy Current Loss
- Lecture 12 : Factors on Eddy Current Loss Depends
- Lecture 13 : Hysteresis Loss
- Lecture 14 : Exact Equivalent Circuit
- Lecture 15 : Approximate Equivalent Circuit
- Lecture 16 : Determination of Equivalent Circuit Parameters - No Load Test
- Lecture 17 : Short Circuit Test
- Lecture 18 : Choosing Sides to Carry Out O.C / S.C Test
- Lecture 19 : Efficiency of Transformer - Losses
- Lecture 20 : Efficiency (Contd.)
- Lecture 21 : Condition for Maximum Efficiency When Load Power Factor Constant
- Lecture 22 : Family of Efficiency Curve at Various Power Factor and Energy Efficiency
- Lecture 23 : Load Description and Energy Efficiency
- Lecture 24 : Regulation: its Expression
- Lecture 25 : Regulation: its Expression (Contd.)
- Lecture 26 : Auto Transformer - Introduction
- Lecture 27 : Auto Transformer versus Two Winding Transformer
- Lecture 28 : Auto Transformer versus Two Winding Transformer (Contd.)
- Lecture 29 : Numerical Problems on Ideal Auto Transformer
- Lecture 30 : Two Winding Transformer Connected as Auto Transformer
- Lecture 31 : Practical Auto Transformer
- Lecture 32 : Equivalent Circuit of an Auto Transformer
- Lecture 33 : Polarity Test and Sumpner Test
- Lecture 34 : 3 Phase Transformer Using 3 Single Phase Transformer
- Lecture 35 : Various Connections of 3-Phase Transformer - I
- Lecture 36 : Various Connections of 3-Phase Transformer - II
- Lecture 37: Vector Group of 3-Phase Transformer
- Lecture 38 : Vector Group (Contd.)
- Lecture 39 : Open Delta Connection
- Lecture 40 : 3-Phase Core Type and Shell Type Transformer
- Lecture 41 : Zig Zag Connection
- Lecture 42 : Effect of 3rd Harmonic Exciting Current and Flux
- Lecture 43 : Choosing Transformer Connection
- Lecture 44 : Choosing Transformer Connection (Contd.)
- Lecture 45 : Phase Conversion using Transformer : Scott Connection
- Lecture 46 : Scott Connection (Contd.)
- Lecture 47 : 3 Phase to 6 Phase Conversion and O.C / S.C Test on 3 Phase Transformer
- Lecture 48 : Parallel Operation of Transformers - I
- Lecture 49 : Parallel Operation of Transformers - II
- Lecture 50 : Parallel Operation of Transformers - III
- Lecture 51 : Specific Magnetic and Electric Loadings
- Lecture 52 : Cooling of Transformer and Fillings of Transformer
- Lecture 53 : Output Equation of 3- Phase Transformer
- Lecture 54 : Introduction to D.C Machine
- Lecture 55 : Single Conductor D.C Generator / Motor Operation
- Lecture 56 : Homopolar D.C Generator
- Lecture 57 : Homopolar D.C Motor
- Lecture 58 : Introduction to Rotating D.C Machines
- Lecture 59 : Armature Winding of D.C Machine - I
- Lecture 60 : Armature Winding of D.C Machine - II
- Lecture 61 : Armature Winding of D.C Machine - III
- Lecture 62 : Generated Voltage Across the Armature
- Lecture 63 : Electromagnetic Torque in D.C Machine
- Lecture 64 : Generator and Motor Operation - Basics
- Lecture 65 : O.C.C and Load Characteristic of Separately Excited Generators
- Lecture 66 : Voltage Build Up in Shunt Generator
- Lecture 67 : Load Characteristic of Shunt Generator
- Lecture 68 : Qualitative Discussion on Armature Reaction
- Lecture 69 : ILL Effects of Armature Reaction
- Lecture 70 : Compensating and Interpoles
- Lecture 71 : Armature Reaction (Contd.)
- Lecture 72 : Field Flux Density, Armature Flux Density and Resultant Field Distribution
- Lecture 73 : Field Patterns for Both Motor and Generators
- Lecture 74 : Demagnetising and Cross Magnetising mmf for Brush Shifted Machine
- Lecture 75 : Calculation of Compensating, Interpole and Series Field Turns
- Lecture 76 : Estimating Armature and Field Resistance from its Rating
- Lecture 77 : Power Flow Diagram, Rotational Loss
- Lecture 78 : Shunt Motor: Basic Equation
- Lecture 79 : Starting of D.C Motor - 3- Point Starter
- Lecture 80 : Speed Control of Shunt Motor - I
- Lecture 81 : Speed Control of Shunt Motor - II
- Lecture 82 : Speed Control of Shunt Motor - III
- Lecture 83 : Field Control (Contd.)
- Lecture 84 : D.C Motor Braking
- Lecture 85 : Introduction to Series Motor
- Lecture 86 : Series Motor Characteristics
- Lecture 87 : Series Motor Speed Control
- Lecture 88 : Universal Motor
- Lecture 89 : Swinburne Test
- Lecture 90 : Hopkinson Test
- Lecture 91 : Efficiency Calculation
- Lecture 92 : Field Test on D.C Series Motor
- Lecture 93 : Simplex Wave winding
- Lecture 94 : Wave Winding (Contd.)