PX4101 Analysis of Electrical Machines Syllabus:
PX4101 Analysis of Electrical Machines Syllabus – Anna University PG Syllabus Regulation 2021
OBJECTIVES:
To understand the principles of electromechanical energy conversion in electrical machines and to know the dynamic characteristics of DC motors
To study the concepts related with AC machines, magnetic noise and harmonics in rotating electrical machines.
To interpret the principles of reference frame theory
To study the principles of three phase, doubly fed and ‘n’ phase induction machine in machine variables and reference variables.
To understand the principles of three phase, synchronous machine in machine variables and reference variables.
UNIT I ELECTROMECHANICAL ENERGY CONVERSION and DC MACHINES
Magnetic circuits, permanent magnet, Energy conservation – stored magnetic energy, co-energy – force and torque in singly and doubly excited systems – Elementary DC machine and analysis of steady state operation – Voltage and torque equations – dynamic characteristics – DC motors – Time domain block diagrams – solution of dynamic characteristic by Laplace transformation
UNIT II AC MACHINES -CONCEPTS
Distributed Windings – Winding Functions – Air-Gap Magnetomotive Force -Rotating MMF – Flux Linkage and Inductance -Resistance -Voltage and Flux Linkage Equations for Distributed Winding Machines–magnetic noise and harmonics in rotating electrical machines. Modeling of ‘n’ phase machine.
UNIT III REFERENCE FRAME THEORY
Historical background – phase transformation and commutator transformation – transformation of variables from stationary to arbitrary reference frame – transformation of balanced set-variables observed from several frames of reference.
UNIT IV INDUCTION MACHINES
Three phase induction machine and doubly fed induction machine- equivalent circuit and analysis of steady state operation – free acceleration characteristics – voltage and torque equations in machine variables and arbitrary reference frame variables – analysis of dynamic performance for load torque variations- Transformation theory for ‘n’ phase induction machine.
UNIT V SYNCHRONOUS MACHINES
Three phase synchronous machine and analysis of steady state operation – voltage and torque equations in machine variables and rotor reference frame variables (Park’s equations) – analysis of dynamic performance for load torque variations –Krons primitive machine
TOTAL : 60 PERIODS
OUTCOMES:
After completion of this course, student will be able to
CO1: Understand the principles of electromechanical energy conversion and characteristics of DC motors
CO2: Know the concepts related with AC machines and modeling of ‘n’ phase machines
CO3: Interpret the concepts of reference frame theory.
CO4: Apply procedures to develop induction machine model in both machine variable form and reference variable forms
CO5: Follow the procedures to develop synchronous machine model in machine variables form and reference variable form.
REFERENCES:
1 Stephen D. Umans, “Fitzgerald & Kingsley’s Electric Machinery”, Tata McGraw Hill, 7th Edition, 2020.
2 Bogdan M. Wilamowski, J. David Irwin, The Industrial Electronics Handbook, Second Edition, Power Electronics and Motor Drives, CRC Press, 2011
3 Paul C. Krause, Oleg Wasynczuk, Scott D. Sudhoff, Steven D. Pekarek, “Analysis of Electric Machinery and Drive Systems”, 3rd Edition, Wiley-IEEE Press, 2013.
4 R. Krishnan, Electric Motor & Drives: Modeling, Analysis and Control, Pearson Education, 1st Imprint, 2015.
5 R.Ramanujam, Modeling and Analysis of Electrical Machines,I.k. International Publishing House Pvt.Ltd,2018