power electronics & instrumentation
| VTU | |
|---|---|
|
Subject code |
18EC36 |
|
Semester |
3rd Sem |
POWER ELECTRONICS AND INSTRUMENTATION
18EC36
SYLLABUS
Module-1
Introduction: History, Power Electronic Systems, Power Electronic Converters and Applications.
Thyristors: Static Anode-Cathode characteristics and Gate characteristics of SCR, Turn-ON methods, Turn-OFF mechanisms, Turn-OFF Methods: Natural and Forced Commutation – Class A and Class B types, Gate Trigger Circuit: Resistance Firing Circuit, Resistance capacitance firing circuit, Unijunction Transistor: Basic operation and UJT Firing Circuit. (Text 1)
Module-2
Phase Controlled Converter: Control techniques, Single phase half wave and full wave controlled rectifier with resistive and inductive loads, the effect of the freewheeling diode.
Choppers: Chopper Classification, Basic Chopper operation: step-down, step-up and step-up/down choppers. (Text 1)
Module-3
Inverters: Classification, Single phase Half-bridge and full-bridge inverters with RL load.
Switched Mode Power Supplies: Isolated Flyback Converter, Isolated Forward Converter.(Text 1) Principles of Measurement: Static Characteristics, Error in Measurement, Types of Static Error. (Text 2: 1.2-1.6) Multirange Ammeters, Multirange voltmeter. (Text 2: 3.2, 4.4 )
Module-4
Digital Voltmeter: Ramp Technique, Dual slope integrating Type DVM, Direct Compensation type and Successive Approximations type DVM (Text 2: 5.1-5.3, 5.5, 5.6)
Digital Multimeter: Digital Frequency Meter and Digital Measurement of Time, Function Generator. Bridges: Measurement of resistance: Wheatstone’s Bridge, AC Bridges-Capacitance and Inductance Comparison bridge, Wien’s bridge. (Text 2: refer 6.2, 6.3 up to 6.3.2, 6.4 up to 6.4.2, 8.8, 11.2, 11.8-11.10, 11.14).
Module-5
Transducers: Introduction, Electrical Transducer, Resistive Transducer, Resistive position Transducer, Resistance Wire Strain Gauges, Resistance Thermometer, Thermistor, LVDT. (Text 2: 13.1-13.3, 13.5, 13.6 up to 13.6.1, 13.7, 13.8, 13.11). Instrumentation Amplifier using Transducer Bridge, Temperature indicators using Thermometer, Analog Weight Scale (Text 2: 14.3.3, 14.4.1, 14.4.3).
Programmable Logic Controller: Structure, Operation, Relays and Registers (Text 2: 21.15, 21.15.2, 21.15.3, 21.15.5, 21.15.6).