Principle of operation of Transformers Types Equivalent circuit Voltage regulation Efficiency Testing Open circuit

KARPAGA VINAYAGA COLLEGE OF ENGINEERING AND TECHNOLOGY

LESSON PLAN

Sub Code: ME 6351

Sub Name: ELECTRICAL DRIVES AND CONTROL

Branch: Mechanical Semester: III

OBJECTIVES

To understand the basic concepts of different types of electrical machines and their performance.

To study the different methods of starting D.C motors and induction motors.

To study the conventional and solid-state drives

Unit 1: INTRODUCTION Basic Elements Types of Electric Drives factors influencing the choice of electrical drives heating and cooling curves Loading conditions and classes of duty Selection of power rating for drive motors with regard to thermal overloading and Load variation factors

Session

NoTopics to be coveredRef. bookNo. of periodsCu. No of periodsTeaching Method

1Introduction T111BB

2Basic Elements Types of Electric DrivesT112BB

3Factors influencing the choice of electrical drivesR113BB

4Heating and cooling curvesT214BB

5Loading conditions T126BB

6Classes of dutyR317BB

7Selection of power rating for drive motors with regard to thermal overloading (short time duty)R218BB

8Selection of power rating for drive motors with regard to thermal overloading (continuous and intermittent duty) , SummaryT219BB

Unit II: DRIVE MOTOR CHARACTERISTICS Mechanical characteristics Speed-Torque characteristics of various types of load and drive motors Braking of Electrical motors DC motors: Shunt, series and compound - single phase and three phase induction motors.Session

NoTopics to be coveredRef. bookNo. of periodsCu. No of periodsTeaching Method

9Speed-Torque characteristics of various types of loadT1114BB

10Speed Torque Characteristics of DC motors T2115BB

11Braking of Electrical motors-TypesT1116BB

12Braking of DC shunt motorT1117BB

13Braking of DC series motorT1118BB

14Braking of DC compound motorR3119BB

15Speed Torque Characteristics of AC motorsR2120BB

16Braking of three phase induction motorsR1121BB

17Braking of single phase induction motorsR3122BB

18Problems related to N-T characteristics and braking for DC and AC motorsR3122BB

Unit III: STARTING METHODSTypes of D.C Motor starters Typical control circuits for shunt and series motors Three phase squirrel cage and slip ring induction motors.

Session

NoTopics to be coveredRef. bookNo. of periodsCu. No of periodsTeaching Method

20Need for starters, Two point startersR1123BB

21Three Point starters, T2124BB

22Four Point starters T2125BB

23Typical control circuits for shunt motorsT1126BB

24Typical control circuits for series motorsR2127BB

25DOL starter, primary resistor starter, Autotransformer starterT2228BB

26Star-Delta starter, Rotor resistance starterT2129BB

27Problems and SummaryT1130BB

Unit IV: CONVENTIONAL AND SOLID STATE SPEED CONTROL OF D.C. DRIVESSpeed control of DC series and shunt motors Armature and field control, Ward-Leonard control system - Using controlled rectifiers and DC choppers applications. Session

NoTopics to be coveredRef. bookNo. of periodsCu. No of periodsTeaching Method

28Speed control of DC series motorsT2132BB

29Speed control of DC shunt motorsR2133BB

30Ward-Leonard control system, ProblemsR1134BB

31Basics of controlled rectifiers, choppersT1135BB

32Converter fed DC motor controlT1136BB

33ProblemsT2137BB

34Chopper fed DC motor controlR3138BB

35ProblemsR2139BB

36Applications, SummaryR2140BB

Unit V: CONVENTIONAL AND SOLID STATE SPEED CONTROL OF A.C. DRIVESSpeed control of three phase induction motor Voltage control, voltage / frequency control, slip power recovery scheme Using inverters and AC voltage regulators applications.

Session

NoTopics to be coveredRef. bookNo. of periodsCu. No of periodsTeaching Method

38Speed control of three phase induction motor- Stator Voltage control, V/f controlT2141BB

39Pole changing method, Cascade control, Rotor resistance control, ProblemsT1142BB

40Slip power recovery scheme - conceptR2143BB

41Static Scherbius and Kramer methodR3144BB

42Basics of inverters and AC voltage regulatorR4145BB

43VSI fed Induction motor controlT2146BB

44CSI fed Induction motor controlT1147BB

45Supply Voltage control using AC Voltage regulatorT1148BB

46TutorialT2149BB

47Summary of all Units, Question paper discussionT2150BB

Text Book:

1. Vedam Subrahmaniam, Electric drives (concepts and applications), 2. Nagrath.i.j. & Kothari.d.p, Electrical machines, tata mcgraw-hill, 1998References:1. Pillai.S.K A first course on Electric drives, Wiley Eastern Limited, 1998

2. M.D.Singh, K.B.Khanchandani, Power Electronics, Tata McGraw-Hill, 1998

3. Dubey G K, Fundamentals of Electrical Drives, Narosa publishing house, Edition 24. Theraja, B.L; Theraja, A.K., Textbook Of Electrical Technology Volume II: Ac And Dc Machines, S. Chand publisher

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NameM.PURUSHOTHAMANProf A. BALAMANIDr. S M. KANNAN

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