EE6604 - DESIGN OF ELECTRICAL MACHINES (Syllabus) 2013-regulation Anna University

EE6604 - DESIGN OF ELECTRICAL MACHINES (Syllabus) 2013-regulation Anna University

EE6604	DESIGN OF ELECTRICAL MACHINES	LPTC

3003

OBJECTIVES:

• To study mmf calculation and thermal rating of various types of electrical machines.
• To design armature and field systems for D.C. machines.
• To design core, yoke, windings and cooling systems of transformers.
• To design stator and rotor of induction machines.
• To design stator and rotor of synchronous machines and study their thermal behaviour.

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 and Insulating Materials - Rating of machines – Standard specifications.

UNIT II	DC MACHINES	9

Output Equations – Main Dimensions – Choice of Specific Electric and Magnetic Loading - Maganetic Circuits 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 – Design of core and winding – Overall dimensions – Operating characteristics – 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 – Choice of Average flux density – 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 – Operating characteristics- Losses and Efficiency.

UNIT V	SYNCHRONOUS MACHINES	9

Output equations – choice of Electrical and Magnetic Loading – 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.

TOTAL : 45 PERIODS

OUTCOMES:

• Ability to model and analyze electrical apparatus and their application to power system

TEXT BOOKS:

1. Sawhney, A.K., ’A Course in Electrical Machine Design’, Dhanpat Rai & Sons, New Delhi, 1984.
2. M.V.Deshpande “Design and Testing of Electrical Machine Design” Wheeler Publications, 2010.

REFERENCES:

1. A.Shanmuga Sundaram, G.Gangadharan, R.Palani ’Electrical Machine Design Data Book’, New Age International Pvt. Ltd., Reprint, 2007.
2. R.K.Agarwal “ Principles of Electrical Machine Design” Esskay Publications, Delhi, 2002.
3. Sen, S.K., ’Principles of Electrical Machine Designs with Computer Programmes’, Oxford and IBH Publishing Co. Pvt. Ltd., New Delhi, 1987.