Special Machines Detailed Syllabus for Power Electronics/ Power and Industrial Drives/ Power Electronics and Electric Drives M.Tech first year first sem is covered here. This gives the details about credits, number of hours and other details along with reference books for the course.
The detailed syllabus for Special Machines M.Tech 2017-2018 (R17) first year first sem is as follows.
M.Tech. I Year I Sem.
Course objectives:
- To understand the working and construction of special machines
- To know the use of special machines in different feed-back systems
- To understand the use of digital controllers for different machines
Course Outcomes: Upon the completion of this subject, the student will be able
- To understand the operation of different special machines
- To select different special machines as part of control system components
- To use special machines as transducers for converting physical signals into electrical signals
- To design digital controllers for different machines
UNIT–I: Stepper Motors: Introduction-synchronous inductor (or hybrid stepper motor), Hybrid stepping motor, construction, principles of operation, energization with two phase at a time- essential conditions for the satisfactory operation of a 2-phase hybrid step motor – very slow – speed synchronous motor for servo control-different configurations for switching the phase windings-control circuits for stepping motors-an open-loop controller for a 2-phase stepping motor.
UNIT-II: Variable Reluctance Stepping Motors: Variable reluctance ( VR ) Stepping motors, single-stack VR step motors, Multiple stack VR motors-Open-loop control of 3-phase VR step motor-closed-Loop control of step motor, discriminator ( or rotor position sensor ) transilator, major loop-characteristics of step motor in open-loop drive – comparison between open-loop position control with step motor and a position control servo using a conventional ( dc or ac ) servo motor- Suitability and areas of application of stepping motors-5- phase hybrid stepping motor – single phase – stepping motor, the construction, operating principle torque developed in the motor. Switched Reluctance Motor: Introduction – improvements in the design of conventional reluctance motors- Some distinctive differences between SR and conventional reluctance motors-principle of operation of SRM- Some design aspects of stator and rotor pole arcs, design of stator and rotor and pole arcs in SR motor-determination of L(θ)-θ profile – power converter for SR motor-A numerical example –Rotor sensing mechanism and logic control, drive and power circuits, position sensing of rotor with Hall problems-derivation of torque expression, general linear case.
UNIT–III: Permanent Magnet Materials and PM DC Machines: Introduction, Hysteresis loops and recoil linestator frames (pole and yoke – part) of conventional PM dc Motors, Equivalent circuit of PM Generator and Motor-Development of Electronically commutated dc motor from conventional dc motor. Brushless DC Motor: Types of construction – principle of operation of BLDM- sensing and switching logic scheme, sensing logic controller, lockout pulses –drive and power circuits, Base drive circuits, power converter circuit-Theoretical analysis and performance prediction, modeling and magnet circuit d-q analysis of BLDM -transient analysis formulation in terms of flux linkages as state variables Approximate solution for current and torque under steady state –Theory of BLDM as variable speed synchronous motor ( assuming sinusoidal flux distribution )- Methods or reducing Torque Pulsations, 180 degrees pole arc and 120 degree current sheet.
UNIT-IV: Linear Induction Motor: Development of a double sided LIM from rotary type IM- A schematic of LIM drive for electric traction development of one sided LIM with back iron-field analysis of a DSLIM fundamental assumptions.
UNIT-V: Permanent Magnet Axial Flux (Pmaf) Machines: Construction, Armature windings – Toroidal Stator and Trapezoidal Stator Windings, Torque and EMF equations, Phasor diagram and output equation.
TEXT BOOKS:
- Special electrical machines, K. Venkataratnam, – University press.
- Special electrical machines, E. G. Janardanan, – PHI.
- R. K. Rajput, “Electrical machines”-5th edition.
- V. V. Athani, “Stepper motor: Fundamentals, Applications and Design”- New age International pub.
For all other M.Tech 1st Year 1st Sem syllabus go to JNTUH M.Tech Power Electronics/ Power and Industrial Drives/ Power Electronics and Electric Drives 1st Year 1st Sem Course Structure for (R17) Batch.
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