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Monday, August 12, 2019

SPECIAL ELECTRICAL MACHINES


Unit 1 | Synchronous Reluctance Motor (SyRM) 

Unit 2 | Stepper Motors 

Click Here to Download the Handwritten Notes

Unit 3 | Switched Reluctance Motor (SRM) 

Unit 4 | Permanent Magnet Brush-less DC motor 

Click Here to Download the Handwritten Notes

Unit 5 | PERMANENT MAGNET SYNCHRONOUS MOTORS (PMSM) 


SYLLABUS:

UNIT I 
SYNCHRONOUS RELUCTANCE MOTORS 
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 
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)
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 
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)  
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.


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