EE6703 - SPECIAL ELECTRICAL MACHINES (Syllabus) 2013-regulation Anna University

EE6703 - SPECIAL ELECTRICAL MACHINES (Syllabus) 2013-regulation Anna University

EE6703	SPECIAL ELECTRICAL MACHINES	LPTC

3003

OBJECTIVES:

• To impart knowledge on Construction, principle of operation and performance of synchronous reluctance motors.
• To impart knowledge on the Construction, principle of operation, control and performance of stepping motors.
• To impart knowledge on the Construction, principle of operation, control and performance of switched reluctance motors.
• To impart knowledge on the Construction, principle of operation, control and performance of permanent magnet brushless D.C. motors.
• To impart knowledge on the Construction, principle of operation and performance of permanent magnet synchronous motors.

UNIT I	SYNCHRONOUS RELUCTANCE MOTORS	9

Constructional features – Types – Axial and Radial flux motors – Operating principles – Variable Reluctance Motors – Voltage and Torque Equations - Phasor diagram - performance characteristics – Applications.

UNIT II	STEPPER MOTORS	9

Constructional features – Principle of operation – Variable reluctance motor – Hybrid motor – Single and multi stack configurations – Torque equations – Modes of excitation – Characteristics – Drive circuits – Microprocessor control of stepper motors – Closed loop control-Concept of lead angle– Applications.

UNIT III	SWITCHED RELUCTANCE MOTORS (SRM)	9

Constructional features – Rotary and Linear SRM - Principle of operation – Torque production – Steady state performance prediction- Analytical method -Power Converters and their controllers – Methods of Rotor position sensing – Sensor less operation – Characteristics and Closed loop control – Applications.

UNIT IV	PERMANENT MAGNET BRUSHLESS D.C. MOTORS	9

Permanent Magnet materials – Minor hysteresis loop and recoil line-Magnetic Characteristics – Permeance coefficient -Principle of operation – Types – Magnetic circuit analysis – EMF and torque equations –Commutation - Power Converter Circuits and their controllers – Motor characteristics and control– Applications.

UNIT V	PERMANENT MAGNET SYNCHRONOUS MOTORS (PMSM)	9

Principle of operation – Ideal PMSM – EMF and Torque equations – Armature MMF – Synchronous Reactance – Sine wave motor with practical windings - Phasor diagram – Torque/speed characteristics - Power controllers - Converter Volt-ampere requirements– Applications.

TOTAL : 45 PERIODS

OUTCOMES:

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

TEXT BOOKS:

1. K.Venkataratnam, ‘Special Electrical Machines’, Universities Press (India) Private Limited, 2008.
2. T.J.E. Miller, ‘Brushless Permanent Magnet and Reluctance Motor Drives’, Clarendon Press, Oxford, 1989.
3. T. Kenjo, ‘Stepping Motors and Their Microprocessor Controls’, Clarendon Press London, 1984.\

REFERENCES:

1. R.Krishnan, ‘Switched Reluctance Motor Drives – Modeling, Simulation, Analysis, Design and Application’, CRC Press, New York, 2001.
2. P.P. Aearnley, ‘Stepping Motors – A Guide to Motor Theory and Practice’, Peter Perengrinus London, 1982.
3. T. Kenjo and S. Nagamori, ‘Permanent Magnet and Brushless DC Motors’, Clarendon Press, London, 1988.
4. E.G. Janardanan, ‘Special electrical machines’, PHI learning Private Limited, Delhi, 2014.