Semester – IV

ELECTRICAL MACHINES - I

Sr.No Course Content Hrs01 D.C.   Machines:   

Construction,   field    magnet,   armature,    communtator, brushgear,   Armature winding (Lap and wave), Principle of operation,   EMF equation,    elementary   concept,   armature   reaction    and    commutation,  interlopes and compensating winding, Types of D.C. Generator and characteristics, Efficiency of D.C machines.

06

02 D.C   Motor   :  Type of motors, torque equation, characteristics, losses and efficiency,starters : Necessity of starter, Three point & four point starter. Introduction to soft starter. Torque-speed characteristics of shunt, series & compound motors, Speed control :, Basic concept of Static speed control of DC machines, Ward Leonard method. Losses & efficiency in d.c. machines by direct load test and swinburne test.

06

03 TRANSFORMERS :Construction   and principle of   single-phase   transformer, operation on-load and No-load vector diagrams, equivalent circuit, OC and SC test, efficiency and regulation. Construction of 3-phase transformers, Basic connections such as star-star, delta-delta, star-delta and delta-star connection.autotransformer. Polarity test, Back to back Sumpner’s test.

12

04 AUTO TRANSFORMERS Construction, voltage and current ratios, phasor diagram and equivalent circuit

05

05 ALTERNATOR     Construction and principle of operation, EMF equation, synchronous impedance, methods of voltage regulation.

07

06 THREE PHASE INDUCTION MOTOR :Introduction working principle, Classification of AC motors, SynchronousSpeed, speed of rotor field, slip, Various methods of measurement of slip,starting & running torque, torque-slip characteristics, maximum torque,effect of change in voltage & frequency on torque, speed & slip.

02

L T P C4 1 2 6

BOOKS RECOMMENDED:

1 Say M. G., “The performance and design of alternating current machines”, CBS Publishers

and Distributors , Delhi, 1983.

2 Fitzgerald, Kingsley and Umans, “Electric Machinery”:, TMH, New Delhi, 2003

3 Mukherjee and chakravorty, “Electrical Machines”, Dhanpat Rai Pub., New Delhi, 2005.

4 Nagrath and Kothari, “Electric Machines”, TMH, New Delhi, 2005.

5 Bimbhra P. S., “Electrical Machinery”, Khanna Pub., Delhi, 1998

6 Taylor E. O., “Performance and Design of A.C. Commutator motor”, A. H. Wheeler,

Allahabad, 1990.

7 B. L. Theraja, Vol II.  “Electrical Technology” S .Chand Publications.

8 J. B. Gupta, “Electt'ical Machines” ,Kataria Pub

9 Samarjit Singh “Electrical Machines ” Pearson Education

Semester – IV

ELECTRICAL MACHINES – II

Sr.No Course Content Hrs01 POLYPHASE TRANSFORMER:

Polarity, Star/star, Star/delta, Delta/delta, delta/zigzag, terminal marking, Nomenclature, Vector diagram, Phase groups, Parallel operation, Scott connection, V-V connections tertiary winding, Testing of transformers, Polarity test, Back to back Sumpner’s test - efficiency - transients in transformers - voltage regulation - off load and on load tap changers. Concept of Welding transformer, Rectifier transformer & High frequency transformer. autotransformer.

06

02 SYNCHRONOUS MOTOR: Principle of reversibility, Voltage equation, Phasor diagram,  Electrical and mechanical power equation, `V' curves   and  `O' curves, Power flow equation, Synchronous Condensers, 3-Phase  Synchronous Induction Motor, Starting and Circle diagram.

06

03 SERVO MOTORSSymmetrical components applied to two - phase servo motors - equivalent circuit and performance based on symmetrical components - servo motor torque - speed curves

07

04 STEPPER MOTORS Construction features - method of operation - drive - amplifiers and transistor logic - half stepping and the required switching sequence - the reluctance type stepper motor - ratings and other characteristics..

05

05 RELUCTANCE MOTORS General - types of synchronous motors - reluctance - motors - definitions - construction - polyphase and split phase reluctance motors - capacitor type reluctance motors.

08

06 PMDC MOTORS General construction, working and applications,Performance analysis

08 BRUSHLESS DC MOTORS Construction, principle of operation, phasor diagram, characteristics, performance analysis.

04

09 Switched Reluctance Motor General construction, working and applications of SRM

02

L T P C4 1 2 6

REFERENCES:

1. Toro. V. D, “Electric machines and power systems”, Prentice Hall of India, 1985.

2. Veinott, “Fractional horse power electric motors”, Mc Graw Hill, 1948

3. Nasar. S. A, Boldeal, “Linear Motion Electric machine”, John Wiley,1976

4. Athani, “Stepper Motors”, New Age International Pub., 1997

5. Fitzgerald, Kingsley & Umans, “Electric Machinery”, TMH, 2003

6. Kothari & Nagrath, “Electric Machines”, TMH, 2004

Semester – IV

ELECTRICAL MACHINE DESIGN-I  L T P C4 0 2 6

Sr.No Course Content Hrs01 FUNDAMENTAL OF MAGNETIC CIRCUIT:

Basic principles of magnetic circuits – use of B-H curves in magnetic circuits – Calculations of MMF for air gap and teeth – Real and apparent flux density – Effect of saturation – flux density distribution – calculation of magnetizing current – Field Form – Introduction –carter’s fringe curves – flux plotting – air gap flux distribution factor (field form factor) –actual flux distribution factor, Magnetising current calculation, Leakage Reactance calculation for various types of slots, Iron loss calculation concepts.

06

02 DESIGN OF ELECTROMAGNETS:Introduction – Types of Electromagnets – Design of Magnet coils – Problems on above topics – Design of small Flat-faced armature type circular magnet – Design of large-faced armature type circular magnet – Design of Horse shoe type magnet – Design of plunger type magnet – Design of magnetic clutches

06

03 DESIGN OF STARTERS,FIELD REGULATOR &CONTROL PANELS:A.C. and D.C. starters, field regulator and general purpose control panels

07

04 DESIGN OF SMALL TRANSFORMER & CHOKE COILS:Design of Small single-phase transformers – Design of welding transformers –Design of variable air gap single-phase choke coilDesign of variable air gap three-phase choke coilDesign of ballast

05

05 ESTIMATING COSTING FOR RESIDENTIAL,COMMERCIAL & SERVICE CONNECTIONS (1- & 3-):Tenaments , Row houses , Bungalows , Flats , Multi – Storied Buildings ,Internal Wiring Estimation ( Length of wire ) Commercial Complexes like Offices , Hospitals , Hotels ,Theatres . Internal Wiring Estimation ( Length of wire ) , Lighting Series & Hoardings.

08

06 HEATING ELEMENTS :  Characteristic of metal used  for   heating  elements, Design  of Heating elements.

07

08 ARMATURE WINDINGS:DC windings :Simplex & Duplex windings, Lap & Wave windings, Applications, Basic terms related to armature windings, Dummy Coils, Equalizer connections, split coils.AC windings :Introduction, No. of phases, Phase spread, concentric winding, Hemitropic winding, Whole coil winding, Mush winding, Double layer windings, Integral slot lap and wave winding.Fractional slot lap & wave windings. Performance analysis of various windings.

04

# Term work and drawing sheets and sketches shall be based on the above.

Reference Books:1. Electrical Estimating & Costing by N. Alagappan & S. Ekambaram(TTTI, Madras) - (Tata mcgrawhill Ltd).2. Electrical Estimating & Costing by Surjit Singh ( Dhanpat Rai & sons ).3. Electrical Machine Design by A. K. Shawney,Dhanpatrai & sons. Pub.4. Electrical Design, Estimating & Costing By K.B.Raina & S.K.Bhattacharya(TTTI, Chandigarh) – (Wiley Eastern Ltd. ).5. Electrical Installation, Estimating & Costing By J.B. Gupta ( S.K.Kataria & Sons ).6. Electrical Machine Design by R. K. Agrawal.7. Electrical Machine Design by V. N. Mittle, TMH publications.8. Electrical Machine Design by S. K. Sen, Oxferd Publications.9. Electrical Machine Design by Gray A. Macgraw Hill publications.10. Modern armature construction By Phillot  11. Electromagnetic device By Harbert Roters   INDIA

Semester – VII L T P C4 0 0 6

POWER QUALITY

Sr.No Course Content Hrs1 POWER QUALITY

Understanding power quality, types of power quality disturbance, power quality indices, causes and effects of power quality disturbances.

04

2 TRIGGERING & SEGMENTATIONBasic concepts, Overview of existing method, triggering method: changes in RMS waveforms, detecting singular point form wavelet transforms, segmentation.

06

3 HARMONICS: SOURCES & ITS EFFECT Causes and effect of harmonics, converter configuration and their contribution to supply harmonics and other sources of harmonics, standards-IEEE guides, standards and recommended practices, effect of power system harmonics on power system equipment and loads.

07

4 POWER FACTOR CORRECTION & MITIGATION OF HARMONICS Modeling of networks and components under non-sinusoidal conditions: transmission and distribution systems, power quality problems created by drives and its impact on drives, Power factor improvement, Passive Compensation, Active Power Factor Correction -Single Phase APFC, Three Phase APFC and Control Techniques, static VAR compensators-SVC and STATCOM - Active Harmonic Filtering, Dynamic Voltage Restorers for sag ,swell and flicker problems. Grounding and bonding-introduction.: Location, Duration, Instrument set-up and its guide lines.

13

5 ELECTROMAGNETIC INTERFERENCEElectromagnetic Interference: frequency classification, electric and magnetic field, EMI terminology, EMT Mitigation, Health concern of EMI.

06

6 POWER QUALITY MEASUREMENTMeasuring and solving power quality problems, Power Quality measurement device and its measurement, test

06

REFERENCES:

1. Bollen Math H.J, “Understanding Power quality Problems: Voltage Sags and Interruptions”, IEEE Press (Standard Publishers Distributors), Edition First 2001.

2. Sankaran C., “Power Quality”, CRC Press, Edition 2001.

3. Padiyar K.R. “FACTS controller in power transmission and Distribution” ,New Age international, 1st Ed., 2007.

4. Bollen math H.J.,GU Irene Y.H.,“ signal processing of power quality Disturbances”, wilely inter-science publication (copyright IEEE Inc-2006).

5. Recent Publications on power system and Power Delivery.

6. Power Quality - R.C. Duggan

7. Power system harmonics –A.J. Arrillga

8. Power electronic converter harmonics –Derek A. Paice

Semester – VII L T P C4 0 2 6

ELECTRICAL DRIVES AND TRACTION

Sr.No Course Content Hrs1 FUNDAMENTALS OF ELECTRIC DRIVES

Electrical drives and introduction: Electric drives, advantages of electrical drives, parts of electrical drives, choice of electrical drives, status of ac and dc drives. types of load, load with translational motion, load with rotational motion, load torque that vary with time, Speed Sensing , and current Sensing

2 DYNAMICS OF ELECTRICAL DRIVES Fundamental torque equation, speed-torque convention and multi quadrant operation, , dynamics of motor load combination, nature and classification of load torque, measurement of moment of inertia, calculation of acceleration time in transient operation, acceleration time for specific nature of motor and load torque, load equalization, stability of electrical drives. Selection of Motor Power Rating,

3 POWER ELECTRONICS CONTROL OF DC DRIVES Review of DC Motors and its performance, starting, braking, controlled rectifier fed DC drives with continuous and discontinuous mode of operation, Supply Harmonics, Power Factor and ripple in motor current, Chopper Controlled DC Drives, Sources current harmonics in chopper, Converter Ratings and closed loop control.

05

4 POWER ELECTRONICS CONTROL OF AC DRIVES Review of Three phase Induction Motor and its performance, starting, braking, Static Voltage control , Variable Frequency Control (VSI, CSI, Cyclo-converter based), static rotor resistance control and slip power recovery control schemes.

13

5 SYNCHRONOUS MOTORS DRIVES Review of Three phase Synchronous Motor and its performance, Self controlled schemes, Variable frequency control of multiple synchronous motor, Permanent magnet AC motor drives, Brushless DC Motor Drives

12

6 Electric Traction : System in India, Comparison of Different system and their  merits  and demerits, Speed Time curves  and   analysis, Specific energy consumption, Mechanics of train motion, Power supply for traction motors,  Traction  motor and their characteristics, Control  of   traction motor  and control equipments, Transmission system,   Traction  equipment and accessories.

05

REFERENCES:

1. Dubey G.K, “Fundamentals of Electrical Drives”, Narosa Publishing House, Second Edition, 2001.

2. Pillai S.K., “A First Course on Electrical Drives”, New Age International , Second Edition, 2006.

3. De N.K., Sen P.K. “Electric Drives”, Prentice Hall of India, Second Edition , 2001.

4. Krishnan, R, “Electric Motor Drives: Modeling, Analysis and Control ” ,Prentice Hall of India, Second Edition , 2001.

5. Ned Mohan et al, “Power Electronics: Converters, Applications, and Design”, John Wiley & Sons. Inc., 2nd Edition, 1995.

6. Werner Leonhard, “Control of electrical drives”, Springer, 1995.

7. Electrical Power by S.L.Uppal.

8. Utilisation of Electric energy by Garg and Girdhar

9. Electrical Power by Soni, Gupta and Bhatnagar.

Semester – III L T P C3 1 0 5

Engineering Economics & Business Organization

Sr.No Course Content Hrs1 Introduction to Economics

Introduction to economics, its Importance, Principals, Approaches, and use of study, Engineering and economics, Economic problems, economic good and wealth, Demand and supply, Competition, Monopoly, theory of firm, Money and its function, theory of money and choice, the bank and its functions, employment and income, Gross National Product, Net National Product Consumption, Savings and investment

2 Features of Indian Economy-I Broad features of Indian Economy, Natural resources and economic development, Infrastructure in the Indian Economy, Agriculture development, Green revolution, Population, Population theories, Unemployment, Poverty, and Balance Regional Development. Economic Growth and Economic Development, Indian Industries, Industrial Policy, Industrialization in India, role, plan and pattern of Industrialization, Public vs Private Sectors, Economic reforms in India, India’s Five Year Plans.

3 Features of Indian Economy-II The indigenous and modern banking system in India, Reserve Bank of India, Monetary and Fiscal Policies, Financial Institutions and SEBI, Free trade and protection, India’s Foreign Trade and WTO, Balance of Payments, Indian Currency System and Foreign exchange, Foreign Capital Investment, Foreign Aid, and FEMA

4 Introduction to Business Organization-I Concept, nature and scope of business, business and its environment, Profit maximization vs social responsibility of business, business ethics, business enterprise, entrepreneurship, Promoters, types and functions, stages in company formation, concept of business growth, rationale and types of growth strategies, joint venture-definition, scope, role and problems of small business, concepts and features of public enterprise, multinationals

5 Introduction to Business Organization-II Time value for money, Simple and compound interest, annuity, Depreciation, definitions, characteristics, Life and Salvage value, Method of providing for depreciation, relationship between depreciation, repairs, renewals, Depletion cost, Replacement, amortization, and Present worth.

References:

Indian Economy Dutt & Sundaram

Engineering Economics Tarachand

A text book of economic theory Stonner & Hague

Business Organization M C Shukla