EE6703 SPECIAL ELECTRICAL MACHINES syllabus-subject-notes-pevious-year-questions-papers-bank
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.
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.
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.
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.
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