INDUSTRIAL DRIVES & CONTROL DIPLOMA IN ELECTRICAL & ELECTRONICS ENGINEERING Sixth Semester

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 &sectional 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

                                                                                    www.siemens.com/cement

                                                                                    www.siemens.com/metal

                                                                                    www.siemens.comn/sugar

                                                                                    www.abb.com/industries

 

 

2.         CEMENT MILL                                            www.flsmidth.com

                                                                                     www.krupp polysius.com

                                                                                     www.khd humboldt.com

 

3.         PAPER MILL                                                www.metso.com

                                                                                     www.voith.paper.com

 

4.         STEEL MILL                                                www.sms -demag.com

 

5.         DRIVES                                                          www.siemens.com/drives

                                                                                     www.abb.com/drives

 

6.          ELECTRIC TRACTION                             www.siemens.com/mobility

                                                                                      www.alstom.com

                                                www.bombardier.com

                                                                                      www.getransportation.com

 

 

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