Page 59 - REC :: B.E. EEE CURRICULUM & SYLLABUS - R2017

Dept of EEE, REC

EE17503 ELECTRICAL MACHINES – II L T P C
2 2 0 3

OBJECTIVES:
 To impart knowledge on construction and performance of salient and non – salient types of
synchronous generators.
 To impart knowledge on principle of operation and performance of synchronous motors.
 To impart knowledge on construction, principle of operation and performance of induction
machines.
 To impart knowledge on starting and speed control of three-phase induction motors.
 To impart knowledge on construction, principle of operation and performance of single phase
induction motors and special machines.

UNIT I SYNCHRONOUS GENERATORS 9
Constructional details – Types of rotors – EMF equation – Synchronous reactance – Armature reaction –
Voltage regulation – EMF, MMF, ZPF and ASA methods.

UNIT II SYNCHRONIZING AND PARALLEL OPERATION OF SYNCHRONOUS
GENERATORS 9
Synchronizing and parallel operation – Synchronizing torque - Change of excitation and mechanical input
– Two reaction theory – Determination of direct and quadrature axis synchronous reactance using slip test
– Operating characteristics - Capability curves.

UNIT III SYNCHRONOUS MOTORS 8
Principle of operation – Torque equation – Operation on infinite bus bars - V-curves – Power input and
power developed equations – Starting methods – Current loci for constant power input, constant
excitation and constant power developed.

UNIT IV INDUCTION MOTORS 12
Constructional details – Types of rotors – Principle of operation – Slip – Equivalent circuit – Slip-torque
characteristics - Condition for maximum torque -No load and blocked rotor tests- Load test – Losses and
efficiency –Circle diagram – Separation of no load losses –– Induction generators – Self-excited and Grid
connected. Constructional details of single phase induction motor – Double revolving field theory and
operation – Equivalent circuit – No load and blocked rotor test – Performance analysis

UNIT V STARTING AND SPEED CONTROL OF INDUCTION MOTORS 7
Need for starting – Types of starters in three phase induction motors – autotransformer star-delta and
rotor resistance starters – Methods of speed control – Change of voltage, frequency - number of poles
and slip – Slip power recovery scheme. Starting methods of single-phase induction motors.
TOTAL (L:45+T:15): 60 PERIODS
OUTCOMES:
On completion of the course, the students will be able to

Curriculum and Syllabus | B.E. Electrical and Electronics Engineering | R2017 Page 59