EE1211--ELECTRICAL MACHINES - Regulation 2004 - Anna University Chennai Syllabus

EE1211--ELECTRICAL MACHINES

D.C. MACHINES

Constructional details - emf equation - Methods of excitation - Self and separately excited generators - Characteristics of series, shunt and compound generators - Principle of operation of D.C. motor - Back emf and torque equation - Characteristics of series, shunt and compound motors - Starting of D.C. motors - Types of starters - Testing, brake test and Swinburne-s test - Speed control of D.C. shunt motors.

TRANSFORMERS

Constructional details - Principle of operation - emf equation - Transformation ratio - Transformer on no load - Parameters referred to HV/LV windings - Equivalent circuit - Transformer on load - Regulation - Testing - Load test, open circuit and short circuit tests.

INDUCTION MOTORS

Construction - Types - Principle of operation of three-phase induction motors - Equivalent circuit - Performance calculation - Starting and speed control - Single-phase induction motors (only qualitative treatment).

SYNCHRONOUS AND SPECIAL MACHINES

Construction of synchronous machines-types - Induced emf - Voltage regulation; emf and mmf methods - Brushless alternators - Reluctance motor - Hysteresis motor - Stepper motor.

TRANSMISSION AND DISTRIBUTION

Structure of electric power systems - Generation, transmission, sub-transmission and distribution systems - EHVAC and EHVDC transmission systems - Substation layout - Insulators - cables.

Reference

Text Books

1. D.P.Kothari and I.J.Nagrath, -Basic Electrical Engineering Tata McGraw Hill publishing company ltd, second edition, 2002. 2. C.L. Wadhwa, -Electrical Power Systems Wiley eastern ltd India, 1985.

Reference Books

1. S.K.Bhattacharya, -Electrical Machines Tata McGraw Hill Publishing company ltd, second edition, 1998. 2. V.K.Mehta and Rohit Mehta, -Principles of Power System S.Chand and Company Ltd, third edition, 2003.