Unit1 Transformer What is transformer Transformers are electrical

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Unit-1 Transformer

Unit-1 Transformer

What is transformer? • Transformers are electrical devices used to convert or "transform" AC

What is transformer? • Transformers are electrical devices used to convert or "transform" AC voltage from one level to another. (high to low or low to high) • Input and output are AC • They do this by the principle of electromagnetic induction

Symbol of Transformer

Symbol of Transformer

Transformer Operation • An electrical transformer normally consists of a ferromagnetic core and two

Transformer Operation • An electrical transformer normally consists of a ferromagnetic core and two coils called "windings". • A transformer uses the principle of mutual inductance to create an AC voltage in the secondary coil from the alternating electric current flowing through the primary coil. • The voltage induced in the secondary can be used to drive a load.

Transformer Structure

Transformer Structure

Transformer Operation • The working principle of transformer is very simple. It depends upon

Transformer Operation • The working principle of transformer is very simple. It depends upon Faraday's law of electromagnetic induction. Mutual induction between two or more winding is responsible for transformation action in an electrical transformer. Faraday's Laws of Electromagnetic Induction • According to these Faraday's laws, "Rate of change of flux linkage with respect to time is directly proportional to the induced EMF in a conductor or coil".

EMF Equation of transformer Consider AC Sinusoidal flux

EMF Equation of transformer Consider AC Sinusoidal flux

Transformation Ratio “K” • The transformation ratio is defined as the ratio of the

Transformation Ratio “K” • The transformation ratio is defined as the ratio of the secondary voltage to primary voltage. It is denoted by the letter K.

Types of losses in Transformer 1) Copper loss 2) Iron loss : a) Hysteresis

Types of losses in Transformer 1) Copper loss 2) Iron loss : a) Hysteresis loss b) Eddy current loss

Transformer Efficiency • The power loss is converted to heat. The heat produced can

Transformer Efficiency • The power loss is converted to heat. The heat produced can be found by calculating the transformer efficiency.

Voltage Regulation of Transformer The voltage regulation is the percentage of voltage difference between

Voltage Regulation of Transformer The voltage regulation is the percentage of voltage difference between no load and full load terminal voltages of a transformer with respect to its full load voltage.

Problems 1. A transformer has a primary voltage of 230 v and turns ratio

Problems 1. A transformer has a primary voltage of 230 v and turns ratio of 5: 1. Calculate the secondary voltage 2. A transformer has 200 turns in the primary, 50 turns in the secondary, and 120 volts applied to the primary (Vp). What is the voltage across the secondary (V s)?

Equivalent circuit of Transformer

Equivalent circuit of Transformer

Phasor Diagram

Phasor Diagram

Transformer Transformer What is transformer Types of transformerTransformer Transformer What is transformer Types of transformer
Transformers Transformer can Transformer is an Static ElectricalTransformers Transformer can Transformer is an Static Electrical
Transformers Transformers The simple transformer law relates outputTransformers Transformers The simple transformer law relates output
Transformer Standards IEC 60076 Power transformers Transformer MainTransformer Standards IEC 60076 Power transformers Transformer Main
Types of transformers Transformer Construction The transformer hasTypes of transformers Transformer Construction The transformer has
Types of transformers Transformer Construction The transformer hasTypes of transformers Transformer Construction The transformer has
UNIT 3 Transformers 1 Linear Transformer A transformerUNIT 3 Transformers 1 Linear Transformer A transformer
Lecture 10 TRANSFORMERS 1 TRANSFORMER A transformer canLecture 10 TRANSFORMERS 1 TRANSFORMER A transformer can
TRANSFORMER Objectives of Transformer Definition Of Transformer ConstructionTRANSFORMER Objectives of Transformer Definition Of Transformer Construction
Transformer Efficiency VG PATEL TRANSFORMER ENCYCLOPAEDIA TRANSFORMER EFFICIENCYTransformer Efficiency VG PATEL TRANSFORMER ENCYCLOPAEDIA TRANSFORMER EFFICIENCY
Rectifier Transformer VG PATEL TRANSFORMER ENCYCLOPAEDIA RECTIFIER TRANSFORMERRectifier Transformer VG PATEL TRANSFORMER ENCYCLOPAEDIA RECTIFIER TRANSFORMER
NIFPS For Transformer VG PATEL TRANSFORMER ENCYCLOPAEDIA TRANSFORMERNIFPS For Transformer VG PATEL TRANSFORMER ENCYCLOPAEDIA TRANSFORMER
Transformer Main Parts VG PATEL TRANSFORMER ENCYCLOPAEDIA TRANSFORMERTransformer Main Parts VG PATEL TRANSFORMER ENCYCLOPAEDIA TRANSFORMER
Distribution Transformer VG PATEL TRANSFORMER ENCYCLOPAEDIA Distribution TransformerDistribution Transformer VG PATEL TRANSFORMER ENCYCLOPAEDIA Distribution Transformer