COURSE STRUCTURE AND SYALLABUSM. TECH. (POWER ELECTRONICS)

I SEMESTERCode Group Subject L P Credits

Machine Modeling & Analysis 3 0 3Analysis of Power Electronic Converters 3 0 3Modern Control Theory 3 0 3Power electronic Control of DC Drives 3 0 3

Elective –I 1. HVDC Transmission 3 0 3Operations ResearchModern Power electronics

Elective -II Programmable logic controllers and theirapplications

3 0 3

Energy Conservation SystemsDynamics of Electrical Machines

Lab Power Converters Lab 0 3 2Seminar - - 2

Total Credits (6 Theory + 1 Lab.) 22

I- Semester

MACHINE MODELLING AND ANALYSIS

Unit 1: Basic Two-pole DC machine - primitive 2-axis machine - Voltage and Currentrelationship - Torque equation

Unit 2: Mathematical model of separately excited DC motor and DC Series motor in statevariable form - Transfer function of the motor - Numerical problems.

Unit 3: Mathematical model of D.C. shunt motor and D.C. Compound motor in statevariable form - Transfer function of the motor - Numerical Problems.

Unit 4: Linear transformation-Phase transformation (a,b,c to a,p,o)-Activetransformation(a,p,o to d,q).

Unit 5: Circuit model of a 3 pahse Induction motor - Linear transformation - PhaseTransformation - Transformation to a Reference frame - Two axis models for Inductionmotor.

Unit 6: Voltage and current Equations in stator reference frame - Equation in Rotorreference frame - Equations in a synchronously rotating frame - Torque equation-Equations in state-space form.

Unit 7: Circuit model of a 3ph Synchronous motor - Two axis representation of Syn.Motor.

Unit 8: Voltage and current Equations in state - space variable form - Torque equation.

BOOKS :1. Thyristor control of Electric Drives - Vedam Subramanyam.2. Analysis of electric machinery and Drive systems - Paul C.Krause , Oleg

wasynezuk, Scott D.Sudhoff

ANALYSIS OF POWER ELECTRONIC CONVERTERS

Unit I Single Phase AC Voltage Controllers.Single phase AC voltage controllers with Resistive, Resistive-inductive and Resistive-inductive-induced e.m.f. loads - ac voltage controllers with PW Control - Effects ofsource and load inductances - Synchronous tap changers-Applications - numericalproblems.

Unit IIThree Phase AC Voltage Controllers.Three phase AC voltage controllers - Analysis of controllers with star and deltaConnected Resistive, Resistive-inductive loads - Effects of source and load Inductances -applications - numerical problems.

Unit III Cycloconverters.Single phase to single phase cycloconverters - analysis of midpoint and bridgeConfigurations - Three phase to three phase cycloconverters - analysis of Midpoint andbridge configurations - Limitations - Advantages - Applications- numerical problems.

Unit IV Single Phase Converters.Single phase converters - Half controlled and Fully controlled converters -Evaluation of input power factor and harmonic factor - continuous and Discontinuousload current - single phase dual converters - power factor Improvements - Extinctionangle control - symmetrical angle control - PWM -single phase sinusoidal PWM - singlephase series converters - Applications -Numerical problems.

Unit V Three Phase Converters.Three phase converters - Half controlled and fully controlled converters -Evaluation ofinput power factor and harmonic factor - continuous and Discontinuous load current -three phase dual converters - power factor Improvements - three phase PWM - twelvepulse converters - applications -Numerical problems.

Unit VI D.C. to D.C. ConvertersAnalysis of step-down and step-up dc to dc converters with resistive and Resistive-inductive loads - Switched mode regulators - Analysis of Buck Regulators - Boostregulators - buck and boost regulators - Cuk regulators - Condition for continuousinductor current and capacitor voltage - comparison of regulators -Multiouput boostconverters - advantages - applications - Numerical problems.

Unit VII Pulse Width Modulated Inverters(single phase).Principle of operation - performance parameters - single phase bridge inverter -evaluationof output voltage and current with resistive, inductive and Capacitive loads - Voltagecontrol of single phase inverters - single PWM - Multiple PWM - sinusoidal PWM -modified PWM - phase displacement Control - Advanced modulation techniques forimproved performance - Trapezoidal, staircase, stepped, harmonic injection and deltamodulation - Advantage - application - numerical problems.

Unit VIII Pulse Width Modulated Inverters(three phase).Three phase inverters - analysis of 180 degree condition for output voltage And currentwith resistive, inductive loads - analysis of 120 degree Conduction - voltage control of

three phase inverters - sinusoidal PWM - Third Harmonic PWM – 60 degree PWM -space vector modulation - Comparison of PWM techniques- harmonic reductions - Current Source Inverter - variable d.c. link inverter - boostinverter - buck and boost inverter - inverter circuit design - advantages -applications - numerical problems.

Text books:1. Power Electronics - Mohammed H. Rashid - Pearson Education -Third

Edition - First Indian reprint 2004.2. Power Electronics - Ned Mohan, Tore M. Undeland and William P. Robbins -John Wiley and Sons - Second Edition

MODERN CONTROL THEORY

UNIT –I MATHEMATICAL PRELIMINARIESFields, Vectors and Vector Spaces – Linear combinations and Bases – LinearTransformations and Matrices – Scalar Product and Norms – Eigenvalues, Eigen Vectorsand a Canonical form representation of Linear operators – The concept of state – StateEquations for Dynamic systems – Time invariance and Linearity – Nonuniqueness ofstate model – State diagrams for Continuous-Time State models .

UNIT- II STATE VARIABLE ANALYSISLinear Continuous time models for Physical systems– Existence and Uniqueness ofSolutions to Continuous-Time State Equations – Solutions of Linear Time InvariantContinuous-Time State Equations – State transition matrix and it’s properties.

UNIT-III CONTROLLABILITY AND OBSERVABILITYGeneral concept of controllability – General concept of Observability – Controllabilitytests for Continuous-Time Invariant Systems – Observability tests for Continuous-TimeInvariant Systems – Controllability and Observability of State Model in Jordan Canonicalform – Controllability and Observability Canonical forms of State model.

UNIT- IV NON LINEAR SYSTEMS -IIntroduction – Non Linear Systems - Types of Non-Linearities – Saturation – Dead-Zone- Backlash – Jump Phenomenon etc;– Singular Points – Introduction to Linearization ofnonlinear systems, Properties of Non-Linear systems – Describing function–describingfunction analysis of nonlinear systems – Stability analysis of Non-Linear systems throughdescribing functions

UNIT-V NON LINEAR SYSTEMS -IIIntroduction to phase-plane analysis, Method of Isoclines for Constructing Trajectories,singular points, phase-plane analysis of nonlinear control systems.

UNIT-VI STABILITY ANALYSISStability in the sense of Lyapunov, Lyapunov’s stability and Lypanov’s instability

theorems - Stability Analysis of the Linear continuous time invariant systems byLyapunov second method – Generation of Lyapunov functions – Variable gradientmethod – Krasooviski’s method.

UNIT- VII STATE FEEDBACK CONTROLLERS AND OBSERVERSState feedback controller design through Pole Assignment – State observers: Full orderand Reduced order

UNIT – VIIIIntroduction to optimal control - Formulation of optimal control problems – calculus ofvariations – fundamental concepts, functionals, variation of functionals – fundamentaltheorem of theorem of Calculus of variations – boundary conditions – constrainedminimization – formulation using Hamiltonian method – Linear Quadratic regulator

TEXT BOOKS: 1. Modern Control System Theory by M.Gopal – New AgeInternational -1984

1. Modern Control Engineering by Ogata.K – Prentice Hall - 1997

REFERENCES:Optimal control by Kircks

POWER ELECTRONIC CONTROL OF DC DRIVES

Unit-I : controlled Bridge Rectifier (1-Ф) with DC Motor Load:Separately exited DC motors with rectified single-phase supply – single phase semiconverter and single phase full converter for continuous and discontinuous modes ofoperation – power and power factor.

Unit-II : controlled Bridge Rectifier (3-Ф) with DC Motor Load:Three-phase semi converter and three phase full converter for continuous anddiscontinuous modes of operation – power and power factor – Addition of free wheelingdiode- Three-phase double converter.

Unit-III : Three phase naturally commutated bridge circuit as a rectifier or as aninverter: Three phase controlled bridge rectifier with passive load impedance, resistive load andideal supply – Highly inductive load and ideal supply for load side and supply sidequantities, shunt capacitor compensation, three phase controlled bridge rectifier inverter.

Unit-IV: Phase controlled DC Motor drives:Three phase controlled converter, control circuit, control modeling of three phaseconverter – Steady state analysis of three phase converter control DC motor drive – Twoquadrant, three phase converter controlled DC motor dive – DC motor and loadconverter.

Unit-V: Current and Speed Controlled DC Motor drives:Current and speed controllers – current and speed feedback – Design of controllers –current and speed controllers – Motor equations – filter in the speed feed back loop speedcontroller – current reference generator – current controller and flow chart for simulation– Harmonics and associated problems – sixth harmonics torque.

Unit-VI: Chopper controlled DC Motor drivesPrinciples of operation of the chopper – four-quadrant chopper circuit – chopper forinversion – Chopper with other power devices – model of the chopper –input to thechopper steady state analysis of chopper controlled DC motor drives – rating of thedevices – Pulsating torque.

Unit-VII: Closed loop operation of DC Motor drivesSpeed controlled drive system – current control loop – pulse width modulated currentcontroller – hysterisis current controller – modeling of current controller – design ofcurrent controller.

Unit-III: Simulation of DC motor drivesDynamic simulations of the speed controlled DC motor drives – Speed feedback speedcontroller – command current generator – current controller.

References:1. Power Electronic and motor control – Shepherd, Hulley, Liang – II Edition,

Cambridge University Press.2. Electric Motor drives modeling, Analysis and control – R. Krishnan – I Edition,

Prentice Hall India.3. Power Electronic circuits, Drives and Applications – M. H. Rashid – PHI – I

Edition – 19954. Fundamentals of Electric Drives – G.K. Dubey – Narosa Publications – 19955. Power Semiconductor drives – S.B. Dewan and A. Straughen

HIGH VOLTAGE DC TRANSMISSION(Elective-I)

Unit IHV'.D.C. Transmission: General considerations, Power Handling CapabiJities ofHVDC Lines,Basic Conversion principles, static converter configuration.Unit IIStatic Power Converters: 3-pulse, 6-pu!se and 12-pulse converters, converter station andTerminal equipment, commutation process, Rectifier and inverter operation, equivalentcircuit for converter -special features of converter transformers.Unit IIIHarmonics in HVDC Systems, Harmonic elimination, AC and DC filters.Unit IVControl of HVDC Converters and systems: constant current, constant extinction angleand constani Ignition angle control- Individual phase control and equidistant firing anglecontrol, DC power flow control.1!nrt VInteraction between MV AC and DC systems - Voltage interaction, Harmonicinstability problems and DC power modulation.Unit VIMulti-terminal DC links and systems; series, paral lei and series parallel systems,their operation and control.Unit VIITransient over voltages in HVDC systems: Over voltages due to disturbances on DCside, ovsr voltages due to DC and AC side line faultsUnit VIIIConverter faults and protection in HVDC Systems: Converter faults, over currentprotection - valve group, and DC Jine protection. Over voltage protection of converters,surge arresters.Reference Books:1. E.W. Kimbark : Direct current Transmission, Wiely Inter Science New York.J.AriMaga : H/V.D.C.Transmission Peter Peregrinus ltd., London UK 19832.K_.R.Padiyar: High Voltage Direct current Transmission, Wiely Eastern Ltd,, NewDelhi - 1992.3.E.Uhlman : Power Transmission by Direct Current, Springer Verlag, Berlin Helberg -1985

OPERATIONS RESEARCH(Elective – I)

Unit 1:Linear Programming Problem: Formulation – Graphical method - Simplex method –Artificial variable techniques – Big-M tune –phase methods.

Unit 2:Duality theorem – Dual simplex method – Sensitivity analysis - effect of changes in costcoefficients, Constraint constants, Addition/Deletion of variables and constraints

Unit 3:Transportation problem – formulation – Initial basic feasible solution methods –Northwest, Least cost and Vogels methods, MODI optimization - Unbalanced anddegeneracy treatment

Unit 4:Assignment problem – Formulation – Hungarian method – Variants of assignmentproblems, Sequencing problems – Flow shop sequencing – n jobs2 machinessequencing - n jobs3 machines sequencing – Job-shop sequencing – 2 jobsmmachines sequencing – Graphical methods

Unit 5:Game Theory - Introduction - Terminology – Saddle point games - with out Saddle pointgames - 22 games, analytical method - 2n and m2 games– graphical method –dominance principle

Unit 6:Dynamic programming – Bellman’s principle of optimality – short route – capitalinvestment – inventory allocation

Unit 7:Non linear optimization – Single variable optimization problem – Unimodal function -Elimination methods – Fibinocci and Golden reaction methods – Interpolation methods -Quadratic and cubic interpotation method.Multi variable optimization problem – Direct research methods – Univariant method –Pattern search methods – Powell’s , Hook-Jeaves and Rosen-brock’s search method.

Unit 8:Geometric programming – Polynomial – Arithmetic – Seametric inequality –Unconstrained G.P – Constraint G.P with type constraint.Simulation: Definition – Types- steps- Simulation of simple electrical systems –Advantages and Disadvantages

TEXT BOOKS:1. Optimization theory and Applications – S.S.Rao, New Age Internationals2. Operations Research - S.D.Sharma, Galgotia publishers

3. Operations Research – Kausur and Kumar, Spinger PublishersREFERENCES:1. Optimization techniques: Theory and Practice – M.C.Joshi and K.M. More Ugalya,

Narosa Publications2. Optimization : Theory and Practice – Beweridze, Mc Graw Hill3. Simulation Modelling and Analysis – Law and Kelton –TMH4. Optimization Concepts and Applications in Engineering- A.D. Belegundu, J.R.

Chandrupata, Pearson Education, Asia

PROGRAMMABLE LOGIC CONTROLLERS AND THEIR APPLICATIONS(Elective – IIV)

Unit 1:PLC Basics: PLC system, I/O modules and interfacing, CPU processor, programmingequipment, programming formats, construction of PLC ladder diagrams, devices connectedto I/O modules.

Unit 2:PLC Programming: Input instructions, outputs, operational procedures, programmingexamples using contacts and coils. Drill press operation.

Unit 3:Digital logic gates, programming in the Boolean algebra system, conversion examples.Ladder diagrams for process control: Ladder diagrams and sequence listings, ladder diagramconstruction and flow chart for spray process system.

Unit 4:PLC Registers: Characteristics of Registers, module addressing, holding registers, inputregisters, output registers.

Unit 5:PLC Functions: Timer functions and Industrial applications, counters, counter functionindustrial applications, Arithmetic functions, Number comparison functions, numberconversion functions.

Unit 6:Data Handling functions: SKIP, Master control Relay, Jump, Move, FIFO, FAL, ONS, CLRand Sweep functions and their applications.

Unit 7:Bit Pattern and changing a bit shift register, sequence functions and applications, controllingof two axis and three axis Robots with PLC, Matrix functions.

Unit 8:Analog PLC operation: Analog modules and systems, Analog signal processing, multi bitdata processing, analog output application examples, PID principles, position indicator withPID control, PID modules, PID tuning, PID functions.

REFERENCE BOOKS:1. Programmable Logic Controllers – Principle and Applications by John W. Webb and

Ronald A. Reiss, Fifth Edition, PHI2. Programmable Logic Controllers – Programming Method and Applications by JR.

Hackworth and F.D Hackworth Jr. – Pearson, 2004.

ENERGY CONSERVATION SYSTEMS(Elective – II)

1. Photo voltaic power generation ,spectral distribution of energy in solar radiation, solarcell configurations, voltage developed by solar cell, photo current and load current,practical solar cell performance, commercial photo voltaic systems, test specifications forpv systems, applications of super conducting materials in electrical equipment systems.

2. Principles of MHD power generation, ideal MHD generator performance, practicalMHD generator, MHD technology.

3. Wind Energy conversion: Power from wind, properties of air and wind, types of windTurbines, operating characteristics. Tides and tidal power stations, Modes of operation ,tidal project examples, turbines and generators for Tidal power generation. Wave energyconversion: properties of waves and Power content, vertex motion of Waves, deviceapplications. Types of Ocean thermal energy conversion systems Application of OTECsystems Examples, micro hydel developments.

4. Miscellaneous energy conversion systems: coal gasification and liquefaction, biomassconversion, geothermal energy, thermo electric energy conversion, fuel cells andbatteries, principles of EMF generation, description of fuel cells, description of batteries,battery application for large powers.

5. Co-generation and energy storage, combined cycle co-generation, energy storage.Global energy position and environmental effects: energy units, global energy position..Environmental effects of energy conversion systems, pollution from coal and preventivemeasures steam stations and pollution, pollution free energy systems.

TEXT BOOK“Energy conversion systems” by Rakosh das Begamudre, New age internationalpublishers, New Delhi - 2000.

POWER CONVERTERS LAB

1. Speed Measurement and closed loop control using PMDC motor

2. Thyristorised drive for PMDC Motor with speed measurement and closed loopcontrol.

3. IGBT used single 4 quadrant chopper drive for PMDC motor with speedmeasurement and closed loop control.

4. Thyristorised drive for 1Hp DC motor with closed loop control.

5. 3 Phase input, thyristorised drive, 3 Hp DC motor with closed loop

6. 3 Phase input IGBT, 4 quadrant chopper drive for DC motor with closed loopcontrol equipment.

7. Cycloconverter based AC Induction motor control equipment.

8. Speed control of 3 phase wound rotor Induction motor.

9. Single phase fully controlled converter with inductive load

10. Single phase half wave controlled converter with inductive load.