ANNA UNIVERSITY, CHENNAI
AFFILIATED INSTITUTIONS
REGULATIONS – 2017
CHOICE BASED CREDIT SYSTEM
EE8301 Electrical Machines – I

UNIT I MAGNETIC CIRCUITS AND MAGNETIC MATERIALS 

 Flux linkage, Inductance and energy

 AC excitation, introduction to permanent magnets

Transformer as a magnetically coupled circuit.
UNIT II TRANSFORMERS  

Sumpner’s test, per unit representation

Phasing of transformer

tertiary winding.

UNIT III ELECTROMECHANICAL ENERGY CONVERSION AND CONCEPTS
IN ROTATING MACHINES  Energy in magnetic system

mmf of distributed windings

 rotating mmf waves

UNIT IV DC GENERATORS  

Construction and components of DC Machine –

methods of excitation commutation

characteristics of DC generators.

UNIT V DC MOTORS  

Principle and operations types of DC Motors

Retardation test

Permanent Magnet DC (PMDC) motors