Course Details
Subject {L-T-P / C} : EE6444 : SPECIAL ELECTRICAL MACHINES { 3-0-0 / 3}
Subject Nature : Theory
Coordinator : Prof. Venkata Ramana Naik N.
Syllabus
Syllabus:
Module1: Review and Constructional Features of Special Motor Drives
Review of adjustable speed drives and motor requirement for drives, Permanent- magnet materials, characteristics, energy density, and equivalent circuits, losses, and efficiency of permanent magnet motors.
5 Hours
Module2: PMBLDC and PMS Motors
Principle and construction of permanent magnet brushless direct current motor (PMBLDCM) drive operation with sinusoidal, square, and trapezoidal waves, and vector control of PM synchronous motor Control strategies Flux weakening operation. Modelling of the drive Converter topologies for a PMBDCM drive. Sensor-less control of AC drives, parameter identification in PMBLDCM, speed and position estimation, parameter sensitivity, and Robust motion control.
8 Hours
Module3: Synchronous and Switched Reluctance Motors
Principle and construction of synchronous reluctance-based drive, operating condition and power factor of synchronous reluctance motors, constant power operation, permanent magnet reluctance motors. The principle, construction, and operation of switched reluctance motors, the torque developed, losses, and efficiency Design and application considerations.
8 Hours
Module4: Linear Induction Motors
The principle, construction, and operation of linear induction motors, Goodness factor, short stator, and short rotor affect, High-speed and low-speed applications.
6 Hours
Module5: Stepper Motors
The principle, construction, and operation of stepper motors, variable reluctance and permanent magnet stepping motors, hybrid stepping motors, and driver circuits. Energy-efficient motors.
8 Hours
Course Objectives
- To understand the concepts behind the principle operation of PM motor drive performance.
- Complete fundamentals and essential features of PMBLDCM, PMSM, SRM, LIM, VRM, SRM, and HSM
- Understand the speed control concepts along with the converter design of all motors along with appropriate power electronic circuits.
Course Outcomes
CO1: To study the fundamentals of various permanent magnet materials and characteristics of PM motors. <br /> <br />CO2: Modelling and design of all types of Motors <br /> <br />CO3: Study the dynamic behaviour and of Principle and construction of synchronous reluctance and PM reluctance motors. <br /> <br />CO4: The converter topology and driver based circuit design for controlling supply of the PM. <br /> <br />CO5: Performance and analysis of various types of speed control techniques in both open-loop and Closed-loop speed control <br /> <br />CO6: Various control techniques to further improve the current or flux ripple performance of the motor drives.
Essential Reading
- R. Krishnan, Switched Reluctance Motor Drives – Modeling, Simulation, Analysis, Design and application, CRC Press, New York , 2001
- T. Kenjo, Stepping Motors and Their Microprocessor Controls, Clarendon Press, London, 1984rmanent Magnet and Reluctance Motor Drives, Clarendon Press, Oxford , 1989
Supplementary Reading
- Miller T.J.E.,, Brushless Permanent Magnet and Reluctance Motor Drives, Oxford Clarender Press , 1982
- Nasar S.A, Linear Motion Electric Machines, Wiley , 1976
Journal and Conferences
- E. G. Janardanan, Special Electrical Machines, PHI, New Delhi