PX4201 Analysis of Electrical Drives Syllabus:
PX4201 Analysis of Electrical Drives Syllabus – Anna University PG Syllabus Regulation 2021
OBJECTIVES:
To understand steady state operation and transient dynamics of a motor load system
To study and analyse the operation of the converter / chopper fed DC drive, both qualitatively and quantitatively
To analyse and design the current and speed controllers for a closed loop solid state DC motor drive.
To understand the drive characteristics for different load torque profiles and quadrants of operation
To understand the speed control of induction motor drive from stator and rotor sides.
To study and analyse the operation of VSI &CSI fed induction motor control and pulse width modulation techniques
UNIT I DC MOTORS FUNDAMENTALS AND MECHANICAL SYSTEMS
DC motor- Types, induced emf, speed-torque relations; Speed control – Armature and field speed control; Ward Leonard control – Constant torque and constant horse power operation Introduction to high speed drives and modern drives. Characteristics of mechanical system– dynamic equations, components of torque, types of load; Requirements of drives characteristics – stability of drives–multi-quadrant operation; Drive elements, types of motor duty and selection of motor rating.
UNIT II CONVERTER AND CHOPPER CONTROL
Principle of phase control – Fundamental relations; Analysis of series and separately excited DC motor with single-phase and three-phase converters –performance parameters, performance characteristics. Introduction to time ratio control and frequency modulation; chopper controlled DC motor – performance analysis, multi-quadrant control – Chopper based implementation of braking schemes; Related problems
UNIT III CLOSED LOOP CONTROL
Modeling of drive elements – Equivalent circuit, transfer function of self, separately excited DC motors; Linear Transfer function model of power converters; Sensing and feeds back elements – Closed loop speed control – current and speed loops, P, PI and PID controllers – response comparison. Simulation of converter and chopper fed DC drive
UNIT IV VSI AND CSI FED STATOR CONTROLLED INDUCTION MOTOR CONTROL
AC voltage controller – six step inverter voltage control-closed loop variable frequency PWM inverter fed induction motor (IM) with braking-CSI fed IM variable frequency motor drives – pulse width modulation techniques – simulation of closed loop operation of stator controlled induction motor drives
UNIT V ROTOR CONTROLLED INDUCTION MOTOR DRIVES
Static rotor resistance control – injection of voltage in the rotor circuit – static scherbius drives – static and modified Kramer drives – sub-synchronous and super-synchronous speed operation of induction machines – simulation of closed loop operation of rotor controlled induction motor drives
TOTAL : 60 PERIODS
OUTCOMES:
CO1: Ability to acquire and apply knowledge of mathematics and converter/machine dynamics in Electrical engineering.
CO2: Ability to formulate, design, simulate power supplies for generic load and for machine loads.
CO3: Ability to analyze, comprehend, design and simulate direct current motor based adjustable speed drives.
CO4: Ability to analyze, comprehend, design and simulate induction motor based adjustable speed drives.
CO5: Ability to design a closed loop motor drive system with controllers for the current and speed control operations.
TEXTBOOKS:
1.Gopal K Dubey, “Power Semiconductor controlled Drives”, Prentice Hall Inc., NewYersy, 1989
2. R.Krishnan, “Electric Motor Drives – Modeling, Analysis and Control”,Prentice-Hall of India Pvt. Ltd., New Delhi,2010
3. Bimal K Bose, “Modern Power Electronics and AC Drives”, Pearson Education Asia2002REFERENCES:
4.Gopal K.Dubey, “Fundamentals of Electrical Drives”, Narosal Publishing House, New Delhi, Second Edition, 2009.
5. Vedam Subramanyam, “Electric Drives – Concepts and Applications”, Tata McGraw- Hill publishing company Ltd., New Delhi, 2002.
6. P.C Sen “Thyristor DC Drives”, John wiely and sons, New York, 1981.
7. W.Leonhard, “Control of Electrical Drives”, Narosa Publishing House, 1992.
8. Murphy J.M.D and Turnbull, “Thyristor Control of AC Motors”, Pergamon Press, Oxford, 1988.