EE3406 Electrical Machines Syllabus:
EE3406 Electrical Machines Syllabus – Anna University Regulation 2021
COURSE OBJECTIVE:
To educate students on the construction and operation of DC and AC machines, including generators, motors, and transformers. This course also aims to impart knowledge of testing methods and performance analysis.
UNIT I DC GENERATOR
Constructional details, armature windings and types – Principle and EMF equation – Armature reaction – Commutation – OCC and load characteristics of various DC generators – Applications.
UNIT II DC MOTORS
Principle of operation – Back EMF significance – Torque and power equations – Speed control, starting methods and Load characteristics of various DC motors – Swinburne’s test – Applications.
UNIT III SINGLE-PHASE TRANSFORMERS
Construction and principle – Equivalent circuit – Phasor diagrams – Open and short circuit tests – Voltage regulation – Losses and efficiency – All-day efficiency – Applications. Auto And Three-Phase Transformers: Working principle – Comparison with two-winding transformers– Three-phase transformer connections (Vector group).
UNIT IV INDUCTION MOTOR
Three Phase: Construction – Principle of operation – Slip and torque-slip characteristics – Equivalent circuit – Losses and efficiency – Cogging and crawling – Load, no-load and blocked rotor tests – Starters and speed control.
Single Phase: Construction – Double-field revolving theory – Equivalent circuit – Starting methods – Applications.
UNIT V SYNCHRONOUS GENERATOR
Construction – Winding factors – EMF equation – Armature reaction – Voltage regulation (EMF method) – Synchronization and parallel operation. Synchronous Motor – Principle of operation – Torque equation – V and Inverted V curves – Starting methods – Hunting – Applications.
TOTAL:60 PERIODS
REFERENCES:
1. Kothari, D.P., & Nagrath, I.L., Electric Machines, Tata McGraw Hill, 5th Edition, 2017 & Fully Revised 2021
2. Bimbhra, P.S., Electrical Machinery, Khanna Publishers, 2nd Edition, 2021
3. Fitzgerald, A.E., & Kingsley, C., Electric Machinery, McGraw Hill, 6th Edition, 2017
4. Clayton, A.E., & Hancock, N.N., Performance and Design of DC Machines, CBS Publishers, 2018
5. Say, M.G., Performance and Design of AC Machines, CBS Publishers, 2008
E-Resource:
• NPTEL: Electrical Machines – I
COURSE OUTCOMES:
Upon completion of the course, students will be able to:
CO1: Explain the construction and performance of DC generators and motors.
CO2: Apply testing methods and analyze characteristics of DC machines.
CO3: Analyze and evaluate transformer operation, testing, and efficiency.
CO4: Explain working and testing of synchronous machines.
CO5: Analyze the characteristics and performance of induction motors (three-phase and single-phase).