Magnetic Circuits and Transformers

Ön Kapak
Technical Publications, 1 Oca 2008 - 328 sayfa
1 Eleştiri
Electromagnetism
Review of electromagnetism, Magnetic field strength, Magnetic force.Magnetic Circuits
Magnetomotive force, Reluctance, Laws of magnetic circuits, Determination of ampere-turns for series and parallel magnetic circuits, Magnetic leakage and fringing, Hysteresis and eddy current losses.
Electromagnetic Induction
Faraday s laws, Lenz s law, Statically and dynamically induced E.M.F., Energy stored in magnetic field.
Transformers
Introduction, Principle of working, Construction of single phase transformer, E.M.F. equation, Phasor diagram on no load, Leakage reactance, Transformer on load, Equivalent circuit, Voltage regulation, Power and energy efficiency, Open circuit and short circuit tests, Equivalent circuit parameters estimation.
Effect of saturation on exciting current, In-rush current phenomenon.Parallel operation of single phase transformer.
Autotransformer
Principle of operation, Comparison with two winding transformers.Three Phase Transformers
Different winding connections, Voltage and current ratios, Comparative features, Effect of connections on exciting current, Parallel operation.
Three winding transformer-Equivalent circuit, Off-load and on-load tap changing transformer, Scott connections.
 

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İçindekiler

Chapter3 Electromagr
3-1
Examples with Solutions 3 25
3-25
Review Questions 338
3-38
Examples with Solutions 4
4-76
Review Questions 4110
4-110
Review Questions 515
5-15
Chapter7 MMinsformers 71 to 7
7-1
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