POWER ELECTRONICS(Core Course)
AS PERCHOICE BASED CREDIT SYSTEM (CBCS)
SEMESTER–V
Subject Code 15EE53
IA Marks 20
Number of Lecture Hours/Week 04
Exam Hours 03
Total Number of Lecture Hours 50
Exam Marks 80
Credits – 04
Course objectives:
- To give an overview of applications power electronics, different types of power semiconductor devices, their switching characteristics.
- To explain power diode characteristics, types, their operation and the effects of power diodes on RL circuits.
- To explain the techniques for design and analysis of single phase diode rectifier circuits.
- To explain different power transistors, their steady state and switching characteristics and limitations.
- To explain different types of Thyristors, their gate characteristics and gate control requirements.
- To explain the design, analysis techniques, performance parameters and characteristics of controlled rectifiers, DC- DC, DC -AC converters and Voltage controllers.
Module-1
Introduction: Applications of Power Electronics, Types of Power Electronic Circuits, Peripheral Effects, Characteristics and Specifications of Switches. Power Diodes: Introduction, Diode Characteristics, Reverse Recovery Characteristics, Power Diode Types, Silicon Carbide Diodes, Silicon Carbide Schottky Diodes, Diode Switched RL Load, Freewheeling Diodes with Switched RL Load.
Diode Rectifiers:Introduction, Single-Phase Full-Wave Rectifiers, Single-Phase Full-Wave Rectifier with RL Load, Single-Phase Full-Wave Rectifier with a Highly Inductive Load. 10 HOURS
Revised Bloom’s Taxonomy Level
L1 – Remembering,L2 – Understanding,L3 – Applying,L4 – Analysing
Module-2
Power Transistors: Introduction, Power MOSFETs – Steady State Characteristics, Switching Characteristics Bipolar Junction Transistors – Steady State Characteristics, Switching Characteristics, Switching Limits, IGBTs, MOSFET Gate Drive, BJT Base Drive, Isolation of Gate and Base Drives, Pulse transformers and Opto-couplers. 10 HOURSRevised Bloom’s Taxonomy Level
L1 – Remembering,L2 – Understanding,L3 – Applying,L4 – Analysing
Module-3
Thyristors: Introduction, Thyristor Characteristics, Two-Transistor Model of Thyristor, Thyristor Turn- On, Thyristor Turn-Off, A brief study on Thyristor Types, Series Operation of Thyristors, Parallel Operation of Thyristors, di/dtProtection, dv/dtProtection, DIACs, Thyristor Firing Circuits, Unijunction Transistor.10 HOURSRevised Bloom’s Taxonomy Level
L1 – Remembering,L2 – Understanding,L3 – Applying,L4 – Analysing
Module-4
Controlled Rectifiers: Introduction, Single-Phase Full Converters, Single-Phase Dual Converters, Three- Phase Full Converters, Three-Phase Dual Converters, AC Voltage Controllers: Introduction, Single-Phase Full-Wave Controllers with Resistive Loads, Single- Phase Full-Wave Controllers with Inductive Loads, Three-Phase Full-Wave Controllers. 10 HOURS
Revised Bloom’s Taxonomy Level
L1 – Remembering, L2 – Understanding, L3 – Applying, L4 – Analysing.
Module-5
Teaching Hours DC-DC Converters: Introduction, principle of step down and step up chopper with RL load, performance parameters, DC-DC converter classification. DC-AC converters: Introduction, principle of operation single phase bridge inverters, three phase bridge inverters, voltage control of single phase inverters, Harmonic reductions,Current source inverters. 10 HOURS
Revised Bloom’s Taxonomy Level
L1 – Remembering, L2 – Understanding, L3 – Applying, L4 – Analysing.
Course outcomes:
At the end of the course the student will be able to:
- Explain application area of power electronics, types of power electronic circuits and switches their characteristics and specifications.
- Explain types of power diodes, their characteristics, and the effects of power diodes on RL circuits. Explain the techniques for design, operation and analysis of single phase diode rectifier circuits.
- Explain steady state, switching characteristics and gate control requirements of different power transistors and their limitations.
- Discuss different types of Thyristors, their operation, gate characteristics and gate control requirements.
- Explain designing, analysis techniques and characteristics of thyristor controlled rectifiers.
- Discuss the principle of operation of single phase and three phase DC - DC, DC –AC converters and AC voltage controllers
Engineering Knowledge, Problem analysis.
Question paper pattern:
- The question paper will have ten questions.
- Each full question is for 16 marks.
- There will be 2full questions (with a maximum of four sub questions in one full question) from each module.
- Each full question with sub questions will cover the contents under a module.
- Students will have to answer 5 full questions, selecting one full question from each module.
1 Power Electronics: Circuits Devices and Applications Mohammad H Rashid, Pearson 4th Edition, 2014
Reference Books
1 Power Electronics: Converters, Applications and Design Ned Mohan et al Wiley 3rd Edition, 2014
2 Power Electronics Daniel W Hart McGraw Hill 1st Edition, 2011
3 Elements of Power Electronics Philip T Krein Oxford Indian Edition, 2008
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