Syllabus of Diploma (RGPV) Semester-IV, Electrical Engineering
FUNDAMENTALS OF POWER ELECTRONICS, PAPER CODE : 7436, SUBJECT CODE : 401
Unit – I : Power Electronic Devices
- Power electronic devices
- Power transistor: construction, working principle, V-I characteristics and uses.
- IGBT: Construction, working principle, V-I characteristics and uses.
- Concept of single electron transistor (SET) – aspects of Nano- technology.
Unit – II : Thyristor Family Devices
- SCR: construction, two transistor analogy, types, working and characteristics.
- SCR mounting and cooling.
- Types of Thyristors: SCR, LASCR, SCS, GTO, UJT, PUT, DIAC and TRIAC
- Thyristor family devices: symbol, construction, operating principle and V-I characteristics.
- Protection circuits: over-voltage, over-current, Snubber, Crowbar.
Unit– III : Turn-on and Turn-off Methods of Thyristors
- SCR Turn-On methods: High Voltage thermal triggering, Illumination triggering, dv/dt triggering, Gate triggering.
- Gate trigger circuits – Resistance and Resistance-Capacitance circuits.
- SCR triggering using UJT, PUT: Relaxation Oscillator and Synchronized UJT circuit.
- Pulse transformer and opto-coupler based triggering.
- SCR Turn-Off methods: Class A- Series resonant commutation circuit,
- Class B-Shunt Resonant commutation circuit,
- Class C-Complimentary Symmetry commutation circuit,
- Class D –Auxiliary commutation,
- Class E- External pulse commutation, Class F- Line or natural commutation.
Unit– IV : Phase Controlled Rectifiers
- Phase control: firing angle, conduction angle.
- Single phase half controlled, full controlled and midpoint controlled rectifier with R,
- RL load: Circuit diagram, working, input- output waveforms, equations for DC output and effect of freewheeling diode.
- Different configurations of bridge controlled rectifiers: Full bridge, half bridge with common anode, common cathode,
- SCRs in one arm and diodes in another arm.
Unit– V : Industrial Control Circuits
- Applications: Burglar’s alarm system, Battery charger using SCR, Emergency light system,
- Temperature controller using SCR and; Illumination control / fan speed control TRIAC.
- UPS: Offline and Online SCR based AC and DC circuit breakers.
ELECTRIC POWER TRANSMISSION AND DISTRIBUTION, PAPER CODE : 7437, SUBJECT CODE : 402
Unit – I : Basics of Transmission and Distribution
- Single line diagrams with components of the electric supply transmission and distribution systems.
- Classification of transmission lines: Primary and secondary transmission; standard voltage level used in India.
- Classification of transmission lines: based on type of voltage, voltage level, length and others
- Characteristics of high voltage for power transmission.
- Method of construction of electric supply transmission system – 110 kV, 220 kV, 400 kV.
- Method of construction of electric supply distribution systems – 220 V, 400V, 11 kV, 33 kV
Unit – II : Transmission Line Parameters and Performance
- Line Parameters: Concepts of R, L and C of line parameters and types of lines.
- Performance of short line: Efficiency, regulation and its derivation, effect of power factor, vector diagram for different power factor.
- Performance of medium line: representation, nominal ‘T’, nominal ‘π’ and end condenser methods.
- Transposition of conductors and its necessity.
- Skin effect and proximity effect.
Unit– III : Extra High Voltage Transmission
- Extra High Voltage AC (EHVAC) transmission line: Necessity, high voltage substation components such as transformers and other switchgears, advantages, limitations and applications and lines in India.
- Ferranti and Corona effect.
- High Voltage DC (HVDC) Transmission Line: Necessity, components, advantages, limitations and applications.
- Layout of monopolar, bi-Polar and homo-polar transmission lines. Lines in India.
- Features of EHVAC and HVDC transmission line.
- Flexible AC Transmission line: Features, d types of FACTS controller.
- New trends in wireless transmission of electrical power.
Unit– IV : A.C Distribution System
- AC distribution: Components classification, requirements of an ideal distribution system, primary and secondary distribution system.
- Feeder and distributor, factors to be considered in design of feeder and distributor.
- Types of different distribution schemes: radial, ring, and grid, layout, advantages, disadvantages and applications.
- Voltage drop, sending end and receiving end voltage.
- Distribution Sub-Station: Classification, site selection, advantages, disadvantages and applications.
- Single Line diagram (layout) of 33/11KV Sub-Station, 11KV/400V sub-station,
- Symbols and functions of their components.
Unit– V : Components of Transmission and Distribution Line
- Overhead Conductors: Properties of material, types of conductor with trade names, significance of sag.
- Line supports: Requirements, types of line structures and their specifications, methods of erection.
- Line Insulators: Properties of insulating material, selection of material, types of insulators and their applications, causes of insulator failure,
- derivation of equation of string efficiency for string of three suspension insulator, methods of improving string efficiency.
- Underground Cables: Requirements, classification, construction, comparison with overhead lines, cable laying and cable jointing
INDUCTION, SYNCHRONOUS AND SPECIAL ELECTRIC MACHINES, PAPER CODE : 7438, SUBJECT CODE : 403
Unit – I : Three Phase Induction Motor
- Working principle: production of rotating magnetic field, Synchronous speed, rotor speed and slip.
- Constructional details of 3 phase induction motors: Squirrel cage induction motor and Slip ring induction motor.
- Rotor quantities: frequency, induced emf, power factor at starting and running condition.
- Characteristics of torque versus slip (speed), Torques: starting, full load and maximum with relations among them.
- Induction motor as a generalized transformer with phasor diagram.
- Four quadrant operation, Power flow diagram
- Starters: need and types; stator resistance, auto transformer, star delta, rotor resistance and soft starters.
- Speed control methods: stator voltage, pole changing, rotor resistance and VVVF.
- Motor selection for different applications as per the load torque-speed requirements.
- Maintenance of three phase induction motors
Unit – II : Single phase induction motors
- Double field revolving theory, principle of making these motors self-start.
- Construction and working: Resistance start induction run, capacitor start induction run, capacitor start capacitor run, shaded pole, repulsion type, series motor, universal motor, hysteresis motor.
- Torque-speed characteristics for all of the above motors.
- Motor selection for different applications as per the load torque-speed requirements.
- Maintenance of single phase induction motors
Unit– III : Three phase Alternators
- Principle of working, moving and stationary armatures.
- Constructional details: parts and their functions, rotor constructions. Windings: Single and Double layer.
- M.F. equation of an Alternator with numerical by considering short pitch factor and distribution factor.
- Alternator loading: Factors affecting the terminal voltage of alternator;
- Armature resistance and leakage reactance drops. Armature reaction at various power factors and synchronous impedance.
- Voltage regulation: direct loading and synchronous impedance methods.
- Maintenance of alternators
Unit– IV : Synchronous motors
- Principle of working /operation, significance of load angle.
- Torques: starting torque, running torque, pull in torque, pull out torque.
- Synchronous motor on load with constant excitation (numerical), effect of excitation at constant load (numerical).
- V-Curves and Inverted V-Curves.
- Hunting and Phase swinging.
- Methods of Starting of Synchronous Motor.
- Losses in synchronous motors and efficiency (no numerical).
- Applications areas
Unit– V : Fractional horse power (FHP) Motors
- Construction and working: Synchronous Reluctance Motor, Switched Reluctance Motor,
- BLDC, Permanent Magnet Synchronous Motors, stepper motors, AC and DC servomotors.
- Torque speed characteristics of above motors.
- Applications of above motors.
INDUSTRIAL DRIVES, PAPER CODE : 7439, SUBJECT CODE : 411
Unit – I : Electric Drives
- Need of Electric Drives, Functional Block diagrams of an electric drives. DC Motors, Motor Rating
- Series, Shunt and compound DC motors.
- Universal motor
- Permanent magnet motor
- DC servo motor
- Moving coil motor
- Torque motor.
- Starting and Braking of DC Motors
- Brushless DC Motors for servo applications.
- Maintenance procedure.
Unit – II : AC Motors
- Single phase AC Motors
- a) Resistance split phase motors
- b) Capacitor run motors
- c) Capacitor start motors
- d) Shaded pole motors
- Three phase Induction Motors
- a) Squirrel cage Induction motor
- b) Slip ring Induction Motor
- c) Starting methods of Induction Motor
- d) Braking methods of Induction Motor
- Determination of Motor Rating
- Maintenance procedure.
Unit– III : DC Drives
- Single phase SCR Drives
- a) Half wave converter
- b) Full wave converter
- c) Semi converter
- d) Dual converter
- Three Phase SCR Drives
- a) Half wave converter
- b) Full wave converter
- c) Semi converter
- d) Dual converter
- Reversible SCR Drives.
- Speed control methods of DC series Motor
- Chopper Controlled DC Drives
- Solar and battery powered vehicles
- Maintenance procedure.
Unit– IV : AC Drives
- Starting and Braking of Induction motors.
- Stator voltage control
- Variable Frequency Control
- Voltage Source Inverter Control
- Current Source Inverter Control
- Rotor Resistance Control
- Slip Power Recovery
- Solar powered pump drives
- Maintenance procedure for AC drives
- Sequences of stages & drives required in each stage for following applications:
- a) Textile mills
- b) Steel rolling mills
- c) Paper mills
- d) Sugar mills
Unit– V : Advanced Techniques of Motor Control
- Microcontroller/ Microprocessor based control for drives
- Phase locked loop control of DC motor.
- AC/DC motor drive using Microcomputer control
- AC/DC motor drive using Microcontroller control.
- Synchronous Motor drives.
- Ratings & specifications of stepper motor.
- Stepper motor drives employing microcontroller (No programming)
INDUSTRIAL AUTOMATION AND CONTROL, PAPER CODE : 7440, SUBJECT CODE : 412
Unit – I : Introduction to Industrial Automation
- Automation: Need and benefits.
- Types of automation system: Fixed, Programmable, Flexible
- Different systems used for Industrial automation: PLC, HMI, SCADA, DCS, Drives.
- Evolution of PLC.
Unit – II : PLC Fundamentals
- Building blocks of PLC: CPU, Memory organization, Input- output modules (discrete and analog), Specialty I/O Modules, Power supply
- Fixed and Modular PLC and their types, Redundancy in PLC module
- I/O module selection criteria
- Interfacing different I/O devices with appropriate I/O modules
Unit– III : PLC Programming and Applications
- PLC I/O addressing
- PLC programming Instructions: Relay type instructions, Timer instructions: On delay, off delay, retentive, Counter instructions: Up, Down, High speed, Logical instructions, Comparison Instructions, Data handling Instructions, Arithmetic instructions.
- PLC programming language: Functional Block Diagram (FBD), Instruction List. Structured text, Sequential Function Chart (SFC), Ladder Programming.
- Simple Programming examples using ladder logic: Language based on relay, timer counter, logical, comparison, arithmetic and data handling instructions.
- PLC Based Applications: Motor sequence control, Traffic light control, Elevator control, Tank Level control, Conveyor system, Stepper motor control, Reactor Control Gate trigger circuits – Resistance and Resistance-Capacitance circuits.
Unit– IV : Electric Drives and special machines
- Electric drives: Types, functions, characteristics, four quadrant operation.
- DC and AC drive controls: V/F control, Parameters, direct torque control.
- Drives: Specifications, Applications- Speed control of AC motor /DC Motor.
Unit– V : Supervisory Control and Data Acquisition System (SCADA)
- Introduction to SCADA: Typical SCADA architecture/block diagram, Benefits of SCADA
- Various editors of SCADA
- Interfacing SCADA system with PLC: Typical connection diagram, Object Linking & embedding for Process Control(OPC) architecture,
- Steps in Creating SCADA Screen for simple object, Steps for Linking SCADA object (defining Tags and Items) with PLC ladder program using OPC.
- Applications of SCADA: Traffic light control, water distribution, pipeline control.
ELECTRICAL TESTING AND COMMISSIONING, PAPER CODE : 7441, SUBJECT CODE : 421
Unit – I : Electrical Safety and Insulation
- Do’s and don’ts regarding safety in domestic electrical appliances as well for substation/ power station operators
- Electrical safety in industry/power stations/ substations at the time of operation/ control/ maintenance. Fire detection alarm, fire-fighting equipments
- Factors affecting life of insulating materials, classifications of insulating materials as per IS:1271-1958
- Measuring insulation resistance by different methods such as
- i) Polarization,
- ii) Dielectric absorption,
iii) Megger and to predict the condition of insulation
- Reconditioning of insulation,
- Insulating oil – properties of insulating oil, causes of deterioration of oil, testing of transformer oil as per IS 1866-1961
Unit – II : Installation and Erection
- Concept of foundation for installation of machinery. Requirements of foundation for static and rotating electrical machinery.
- Concept of leveling and aligning Procedure for leveling and aligning alignment of direct coupled drive, effects of mis-alignment
- Installation of transformer as per I.S.-1886-1967 and procedure of installation of transformer, Requirements of installation of pole mounted transformer
- Requirements of installation of rotating electrical machines as per I.S. 900 – 1965
- Devices and tools required for loading, unloading, lifting, and carrying heavy equipment and precautions to be taken while handling them.
Unit– III : Testing and Commissioning
- Concept of testing, Objectives of testing. Roles of I.S.S. in testing of electrical equipment, Types of tests and concepts,
- Routine tests, type tests, supplementary test, special tests, Methods of testing – Direct/Indirect/Regenerative testing.
- Tolerances for the various items for equipment –transformer, induction motor, dc motor, synchronous machines
- Commissioning, Tests before Commissioning for transformer, induction motor, alternator
- Testing of transformer as per I.S.1886- 1967 and I.S.2026- 1962
- Testing of three-phase Induction motor as per I.S.325 – 1970.
- Testing of single-phase induction motor as per I.S.990-1965.
- Testing of synchronous machines as per ISS Testing of D.C. machines
Unit– IV : Troubleshooting Plans
- Internal and external causes for failure / abnormal operation of equipment.
- List of mechanical faults, electrical faults and magnetic faults in the electrical equipment remedies, applications
- Use of tools like bearing puller filler gauges, dial indicator, spirit level, megger, earth tester, and growler.
- Common troubles in electrical equipments and machines.
- Preparation of trouble shooting charts for D.C. Machines, AC Machines and transformers.
Unit– V : Maintenance
- Concept of maintenance, types of maintenance, Routine, preventive and breakdown maintenance.
- Causes of failure of electrical machines
- Preventive maintenance-procedure or developing maintenance schedules for electrical machines.
- Factors affecting preventive maintenance schedules, Concept of TPM, Pillars of TPM
- Identification of different types of faults developed such as mechanical/ electrical/ magnetic faults
- Maintenance schedules of the following as per I.S.S.
- a) Distribution transformer as per I.S.1886-1967
- b) Single phase and three phase Induction motors as per I.S.900-1965.
- c) Batteries
ELECTRICAL ESTIMATION AND CONTRACTING, PAPER CODE : 7442, SUBJECT CODE : 422
Unit – I : Electric Installation and Safety
- Scope and features of National electric code 2011
- Types of electrical installation
- Fundamental principles for electrical installation
- Permit to work, safety instructions and safety practices
- Purpose of estimating and costing.
Unit – II : Estimation and Costing
- Meaning and purpose of- Rough estimate, detailed estimate, supplementary estimate, annual maintenance estimate and revised estimate
- Factors to be considered while preparation of detailed estimate and economical execution of work
- Contracts- Concepts of contracts, types of contracts, contractor, role of contractor
- Tenders and Quotations- Type of tender, tender notice, preparation of tender document, and method of opening of tender
- Quotation, quotation format, comparison between tender and quotation
- Comparative statement, format comparative statement. Order format, placing of purchasing order.
- Principles of execution of works, planning, organizing and completion of work, Billing of work
Unit– III : Non-Industrial Installations
- Types of Non-industrial installations– Office buildings, shopping and commercial centre, residential installation, Electric service and supply
- Design consideration of electrical installation in commercial buildings.
- Design procedure of installation- steps involved in detail, Estimating and costing of unit
- Earthing of commercial installation.
- Design electrical installation scheme of commercial complex.
- Erection, Inspection and testing of installation as per NEC
Unit– IV : Industrial Installation
- Classification of industrial buildings Classification based on power consumption,
- Drawing of wiring diagram and singleline diagram for single phase and three phase Motors.
- Design consideration in industrial installations Design procedure of installation-detailed steps
- Design electrical installation scheme of factory/ small industrial unit, Preparation of material schedule and detailed estimation
- Installation and estimation of agricultural pump and flourmill
Unit– V : Public Lighting Installation
- Classification of outdoor installations streetlight/ public lighting installation
- Street light pole structures. Selection of equipments, sources used in street light installations.
- Cables, recommended types and sizes of cable. Control of street light installation.
- Design, estimation and costing of streetlight
- Preparation of tenders and abstracts.
Unit– VI : Distribution Lines and LT Substation
- Introduction to overhead and underground distribution line.
- Materials used for distribution line HT and LV
- Cables used for distribution line, factors determining selection of LT/ HT power Cables, cable laying and cable termination method according to IS
- Design, estimation and costing of HT LT overhead line and underground cabling.
- Types of 11 KV Distribution substations their line diagram, Estimation of load, Load factor, diversity factor and determination of rating of distribution.
- Design, estimation and costing of outdoor and indoor 11 KV substation.
ESSENCE OF INDIAN KNOWLEDGE AND TRADITION, PAPER CODE : –, COURSE CODE : –
- Basic Structure of Indian Knowledge System:
- Modern Science and Indian Knowledge System
- Yoga and Holistic Health care
- Case Studies.
==End of Syllabus==
