ANNA University Design Of Electrical Mechines Notes
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Syllabus:
UNIT II DC MACHINES 9
Output Equations – Main Dimensions - Magnetic circuit calculations – Carter’s Coefficient - Net length of Iron –Real & Apparent flux densities – Selection of number of poles – Design of Armature –Design of commutator and brushes – performance prediction using design values.
UNIT III TRANSFORMERS 9
Output Equations – Main Dimensions - KVA output for single and three phase transformers –Window space factor – Overall dimensions – Operating characteristics – Regulation – No load current – Temperature rise in Transformers – Design of Tank - Methods of cooling of Transformers.
UNIT IV INDUCTION MOTORS 9
Output equation of Induction motor – Main dimensions – Length of air gap- Rules for selecting rotor slots of squirrel cage machines – Design of rotor bars & slots – Design of end rings – Design of wound rotor -– Magnetic leakage calculations – Leakage reactance of polyphase machines-Magnetizing current - Short circuit current – Circle diagram - Operating characteristics.
UNIT V SYNCHRONOUS MACHINES 9
Output equations – choice of loadings – Design of salient pole machines – Short circuit ratio – shape of pole face – Armature design – Armature parameters – Estimation of air gap length – Design of rotor –Design of damper winding – Determination of full load field mmf – Design of field winding –
Design of turbo alternators – Rotor design.
Syllabus:
UNIT I INTRODUCTION 9
Major considerations in Electrical Machine Design - Electrical Engineering Materials – Space factor –Choice of Specific Electrical and Magnetic loadings - Thermal considerations - Heat flow –Temperature rise - Rating of machines – Standard specifications.
Major considerations in Electrical Machine Design - Electrical Engineering Materials – Space factor –Choice of Specific Electrical and Magnetic loadings - Thermal considerations - Heat flow –Temperature rise - Rating of machines – Standard specifications.
UNIT II DC MACHINES 9
Output Equations – Main Dimensions - Magnetic circuit calculations – Carter’s Coefficient - Net length of Iron –Real & Apparent flux densities – Selection of number of poles – Design of Armature –Design of commutator and brushes – performance prediction using design values.
UNIT III TRANSFORMERS 9
Output Equations – Main Dimensions - KVA output for single and three phase transformers –Window space factor – Overall dimensions – Operating characteristics – Regulation – No load current – Temperature rise in Transformers – Design of Tank - Methods of cooling of Transformers.
UNIT IV INDUCTION MOTORS 9
Output equation of Induction motor – Main dimensions – Length of air gap- Rules for selecting rotor slots of squirrel cage machines – Design of rotor bars & slots – Design of end rings – Design of wound rotor -– Magnetic leakage calculations – Leakage reactance of polyphase machines-Magnetizing current - Short circuit current – Circle diagram - Operating characteristics.
UNIT V SYNCHRONOUS MACHINES 9
Output equations – choice of loadings – Design of salient pole machines – Short circuit ratio – shape of pole face – Armature design – Armature parameters – Estimation of air gap length – Design of rotor –Design of damper winding – Determination of full load field mmf – Design of field winding –
Design of turbo alternators – Rotor design.
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