| Department Of Technical Education DIPLOMA IN ELECTRICAL & ELECTRONICS ENGINEERING Sixth Semester Subject: INDUSTRIAL DRIVES & CONTROL SUBJECT CODE: Contact Hrs / Week: 4 Hrs Contact Hrs / SEM: 64 Hrs CONTENTS Sl.no. Topics hours 1. Industrial drives 24 hrs 2. Electric Traction 13 hrs 3. Maintenance 03 hrs 4. Industrial motor control 10 hrs 5. Distributed digital control (DDC) or distributed control system (DCS]) 04 hrs 6. Environmental concerns and Industry innovations 06 hrs 7. TESTS 4 hrs TOTAL 64 hrs Subject: INDUSTRIAL DRIVES & CONTROL CONTENTS:- 1. INDUSTRIAL DRIVES 24 hrs Electric Motor Drives 4 Driven machine mechanism 9 Process flow diagram and process and selection of motors 10 Selection of control motors 1 2. ELECTRIC TRACTION 13 hrs Different systems of traction 1 Electric traction, advantages & disadvantages 1 System of electric traction 1 Speed time curve 2 Mechanism of train movement 1 Motor for electric traction 1 Control of motors 2 Braking 2 Current collection gear 1 Train lighting system 1 3. MAINTAINENCE & TROUBLESHOOTING 03 hrs 4. INDUSTRIAL MOTOR CONTROL 10 hrs Fundamental of control 2 Control components 2 Control circuit diagram 5 Motor control centre 1 5. DISTRIBUTED CONTRIL SYSTEM 04 hrs Distributed digital control 4 6.Environmental concerns and Industry innovations 06 hrs Visit any process industries like paper mill, cement mill steel mill , sugar mill or arrange guest lecture from experts from above industries INDUSTRIAL DRIVES & CONTROL Specific Instructional Objectives 1. INDUSTRIAL DRIVES 24 hrs 1.1 ELECTRIC MOTOR DRIVE 1.1.1 Define and explain concept of ELECTRIC DRIVE 1.1.2 a) Draw the block diagram of an Electric drive and state function of each Block. b) Describe briefly types of motor used c) State and explain the functions of various modulators d) Describe briefly the source employed in electric drives e) State the components of control units 1.1.3 State the advantages of electric drives 1.1.4 Compare AC drives with DC drives 1.1.5 State the advantages of variable speed drive 1.2 DRIVEN MACHINE MECHANISM 1.2.1 State the basic factors to be considered in selecting a electric motor for given Application 1.2.2 Analyze the type of load involved 1.2.3. Analyze the nature of operation desired 1.2.4. Analyze the nature of desired steady state operation of drive 1.2.5. Analyze the classes of motor duty, -continuous running duty[s 1], and short time Duty [s2] intermittent duty [s3] continuous operation periodic duty [s6] 1.2.6 Analyze the environmental conditions present 1.2.7. State and explain the classification of drives a) Group Drive b) Individual Drive c) Multi motor driver d) Multi drive – common DC bus with individual inverter 1.2.9 Explain Four – quadrant (MULTIQUADRANT) operation of electric drive 1.2.10 Draw the block diagram of three phases fully controlled rectifier fed DC drive And explain its operation- 1.2.11 Draw the block diagram of cycloconverter fed synchronous motor and explain its Operation 1.2.12 Draw the block diagram of slip recovery system – SLIP RING INDUCTION MOTOR (STATIC SCHERBIUS SYSTEM) and explain its operation 1.2.13 Draw the block diagram of voltage source inverter fed squirrel cage induction Motor and explain its operation 1.3 process flow diagram & process involved including selection of Suitable motors &drives [BLOCK DIAGRAMS OF PROCESS FLOW ONLY] 1.3.1.1 Draw the process flow diagram of pulp&paper mill & explain various Process involved such as making pulp [MECHANICAL AND CHEMICAL METHOD] - chipping, digester, BEATER [chemical] grinding [mechanical]& Making paper-head box-wire section [forming], pressing, drying calendar & reeling section 1.3.1.2 Select a suitable motor and drive for a] grinder, chipper, beaters in Pulpmanufacturingmill and justify the same. b] LINE SHAFT DRIVE §ional drive in paper Manufacturing and justify the same [using slow speed permanent magnet Synchronous motor-ref- -direct drive] (refer dte.kar.nic.in/student) 1.3.2.1 Draw the process flow diagram of reverse hot rolling steel mill and reverse cold rolling mill and Explain various process involved-only rolling mills 1.3.2.2 Select suitable motor and drive for reverse hot rolling mil and reverse cold rolling mill and justify the same [four quadrant operation] 1.3.3.1 Draw the process flow diagram of cement mill and explain various processes such as Quarry, crushing, raw grinding, rotary kiln, grinding etc. in the manufacture of Cement [dry process only] 1.3.3.2 select suitable motor and drive for a] crusher b] raw grinding-vertical roller mill And horizontal ball mill or tube mill. c] Rotary kiln drive-single pinion and twin pinion-pinion and girth gear drive or ring geared mill drive [speed time characteristic- (refer dte.kar.nic.in/student)] d] Finish grinding mill-cement mill-ring Motor or gearless mill drive [GMD] with cyclo converter controlled synchronous motor (Refer dte.kar.nic.in/student) in cement Manufacturing and justify the Selection 1.3.4.1 Draw the process flow diagram of sugar mill [sugar cane] and explain various processes involved In the manufacture of sugar such as cane cutting, cane crushing, vacuum pan, Evaporator, centrifuge etc. 1.3.4.2 select a suitable motor &drive for a] cane cutter b] cane crushing mill c] Centrifuge [duty cycle-pole changing and frequency control method of speed Control with regenerative braking-(refer dte.kar.nic.in/student)] in sugar manufacturing and justify theSelection 1.3.5 Select a suitable motor & drive for electric hoisting crane and justify the selection 1.3.6 Select a suitable motor and drive for large centrifugal pump and justify the selection (Variable speed drive-(refer –vedam subramanyam ...)-mega watt range] 1.3.7 Select a suitable motor and drive for large high speed compressor and justify the Selection (Variable speed drive) ref-vedam subramanyam)-megawatts range 1.3.8 Select a suitable motor and drive for large fan [..I.D&F.D FANS used in cement mill] and justify the selection[variable speed drive]-megawatts range 1.4 Selection of motor for control application 1.4.1 Select a suitable motor and drive system for floppy disc & hard disc drive Computer printer and justify. 1.4.2 Select a suitable motor and drive system for (a) Robot Arm (b) C. N.C. Machine And justify 2. ELECTRIC TRACTION 13 hrs 2.1.1 List the different system of traction 2.1.2 Mention the importance of electric traction 2.1.3 List advantages and disadvantages of Electric Traction 2.2.1 Explain the following electric traction with block diagram a) 25 KV, 50 Hz, AC single phase to 3 phase AC b) 25 KV, 50 Hz, AC single phase to DC c) Diesel electric traction .. d] DC traction at 750 v or 1500 v DC 2.2.2 Concept:- a) Electrical multiple unit (EMU), b) Diesel multiple unit (DMU), c) Magnetic levitation system d]trolly bus 2.3 Performance of an electric car-speed time curve 2.3.1 Define and explain speed time curve 2.3.2 Draw and compare speed time curve for a)City: Service or Urban service b) Sub Urban Service c) Main Line Service 2.4 Mechanics of train movement 2.4.1 Define tractive effort 2.4.2 Explain Total tractive effort with respect to acceleration, gradient, train resistance.[FT=FA+FR+-FG] 2.4.3 Define co-efficient of adhesion 2.4.4 State the factors affecting the value of co-efficient of adhesion 2.5 Motor for electric traction 2.5.1 Explain the nature of traction load 2.5.2 List the important requirements of traction drives 2.5.3 Discuss the various motor used in traction-d.c.series motor, 3phase sq cage Induction motor, permanent magnet synchronous motor- (refer dte.kar.nic.in/student) 2.6 Control of motors 2.6.1 Describe chopper controlled drive for D.C. motors with composite braking for D.C Traction system ref-GK.Dubey 2.6.2 Describe pwm voltage source inverter [VSI] induction motor drive for A.C. Traction system ref-g.k.dubey 2.7 braking 2.7.1 Compare electric braking with mechanical braking 2.7.2 Describe briefly with diagram how Rheostatic or dynamic braking is obtained with a) DC Series Motor b) 3 Phase squirrel cage /slip ring Induction Motor] 2.7.3 Describe briefly with diagram how regenerative braking is obtained with a) DC Series Motor b) 3 Phase Induction Motor [squirrel cage induction motor] 2.8 current collection gears 2.8.1 Explain with diagram current collection through single arm pantograph (Faively) ref-g.k.dubey 2.8.2 Explain with diagram current collection through 3rd rail or conductor’s rail sys 2.9 train lighting system 2.9.1 Describe briefly the train lighting –A) auxiliary converter system [electric trains] b) alternator[axle mounted]
3.maintenance 03 hrs 3.1.1 Describe the role and importance of maintenance & repair 3.1.2 Describe the technique and procedure adopted in maintenance and repair of Electrical equipment 3.1.3 a) Define preventive maintenance b) State the benefits obtained out of preventive maintenance c) Describe preventive maintenance schedule d) Describe predictive maintenance e) Describe breakdown maintenance 3.1.4 Describe briefly safety procedure and practice in electric work 3.2.5 Give the causes & remedy for various trouble in 3-Phase Induction Motor 4. Industrial motor control 10 hrs 4.1 fundamental of control system with example 4.1.1 Describe automatic control system with example 4.1.2 Draw the block diagram of open & closed loop control system 4.1.3 State the difference between open and closed loop control system 4.1.4 Describe closed loop speed control of induction motor with example 4.2 control circuit diagram 4.2.1 Identify the symbols used in motor control circuit- on and off Pushbutton, contactor, coil, overload relay, limit switch, time delay relay, &float Switch, flow switch etc 4.2.2 List the different diagram used in motor control circuit-ladder and wiring diagram 4.2.3 Explain ladder diagram and wiring diagram with an example of 3 phase induction motor starter 4.2 .4 Develop ladder diagram for three phase Squirrel cage induction motor for Following operations:- a) Develop direct online motor control circuit [D.O.L] i) Control from one location ii) Control from different location b) Develop forward and reverse motor control circuit c) Develop two speed control circuit d] Develop star delta starter [automatic] 4.3 motor control centre (mcc) 4.3.1 Define motor control centre 4.3.2 Show the layout of various components in MCC 5 distributed digital control (DDC) or distributed control system (DCS) 04hrs 5.1 Describe dedicated computer control concept ref-Krishna kanth-page no181 to page no 195 5.1.1 Describe centralized computer concept 5.1.2 Describe Decentralized computer concept 5.1.3 Name the advantages of distributed control system 5.1.4 Compare Distributed v/s Centralized control system 5.1.5 State the functional requirements of distributed process control system 5.1.6 State the five hierarchical levels of distributed control systems-level 1 to5 TEXT BOOKS SL NO BOOK NAME AUTHOR NAME PUBLICATIONS 1 Computer based industrial Krishna Kant Prentice hall - PHI Control 2 Fundamentals of Electrical G.K.Dubey Narosa Pub Drives 3 Electric Drives Vedam Subramanyam Tata-McGraw Hill 4 Control of Electrical Machine S.K.Bhattacharya New Age 5 A first course in electric drive s.k.pillai New- age REFERENCE BOOKS SL NO BOOK NAME AUTHOR NAME PUBLICATIONS 1 Electric motors applications m.v.deshpande PHI And control 2 Process control instrumentation C.Johnson PHI Technology 3 Computer Aided Process S.K.Singh PHI CONTROL 4 Electric Drives N.K. DE PHI 5 Electrical power S.L.UPPAL Khanna 6 Electrical motor drives Berde Khanna 7 Control of Electrical Drives W.Leonard Springer (3rd Edition) 8 Installation & Maintenance Kirloskar Co., NGEF-ABB, Siemens manuals Of Induction Motor 9 Standard Hand book for A.E.Knowlton TATA-McGrawHill Electrical Engineers 10 Dryden’s outline of Chemical M.Gopal Rao - Technology 11 Modern Power Electronics B.K.Bose Pearson India & AC Drives 12 Industrial Drives & Control TTTI Madras Oxford University Press 13 Power Electronics & W.Shepherd & Hulley Cambridge UniversityPRESS Motor Control USEFUL WEBSITES Refer: - dte.kar.nic.in/student 1. PROCESS INDUSTRIES www.siemens.com/paper 2. CEMENT MILL www.flsmidth.com www.krupp polysius.com www.khd humboldt.com 3. PAPER MILL www.metso.com 4. STEEL MILL www.sms -demag.com 5. DRIVES www.siemens.com/drives 6. ELECTRIC TRACTION www.siemens.com/mobility www.getransportation.com |
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INDUSTRIAL DRIVES & CONTROL DIPLOMA IN ELECTRICAL & ELECTRONICS ENGINEERING Sixth Semester
