Power Electronics (B.Tech)

Power semiconductor devices, rectifiers, choppers, inverters and AC voltage controllers.

6 MonthsDuration 5Chapters30Topics

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Syllabus · पाठ्यक्रम

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01Unit 1: Power Semiconductor Devices 7 topics

Power diode and power BJT
SCR: structure, V-I characteristics and two-transistor model
Turn-on methods and gate triggering circuits
Commutation techniques
Protection: snubber, dv/dt and di/dt
MOSFET, IGBT, GTO and TRIAC
Series and parallel operation of SCRs

02Unit 2: Phase-Controlled Rectifiers 7 topics

Single-phase half-wave controlled rectifier
Single-phase semi and full converters with R and RL loads
Freewheeling diode
Effect of source inductance
Three-phase half and full converters
Dual converter
Performance parameters

03Unit 3: DC-DC Converters (Choppers) 5 topics

Principle of step-down and step-up choppers
Control strategies: TRC and current limit
Classification: class A to E
Buck, boost and buck-boost converters
Voltage and current commutated choppers

04Unit 4: Inverters 6 topics

Single-phase half-bridge and full-bridge VSI
Three-phase VSI: 180 and 120 degree conduction
Single, multiple and sinusoidal PWM
Harmonic reduction
Current source inverter
Series and parallel inverters

05Unit 5: AC Voltage Controllers and Cycloconverters 5 topics

Single-phase AC voltage controller: phase and integral cycle control
AC voltage controller with R and RL loads
Three-phase AC voltage controllers (introduction)
Single-phase and three-phase cycloconverters
Applications

About

You will be able to

Explain the characteristics, triggering, commutation and protection of SCR and other power devices
Analyse single-phase and three-phase controlled rectifiers with R and RL loads
Design buck, boost and buck-boost DC-DC converters and classify choppers
Explain single-phase and three-phase voltage source inverters and PWM techniques
Analyse AC voltage controllers and cycloconverters
Select a suitable power converter for a given application

Who it is for

B.Tech Electrical Engineering students of Semester 6 under AKTU
Students preparing for AKTU sessional tests, the end-semester examination and GATE power electronics

What you need

Analog and Digital Electronics and Network Analysis

Questions

Which syllabus is followed?

The current AKTU (Dr. A.P.J. Abdul Kalam Technical University, Lucknow) B.Tech syllabus of Power Electronics (Electrical Engineering, Semester 6). If your university or college follows a different syllabus, the centre teaches from your own university syllabus.

How is the subject examined?

AKTU assesses it through sessional tests, assignments and attendance, and an end-semester university examination; the centre covers every unit with theory, derivations and numericals.

Are previous-year questions practised?

Yes. Unit-wise AKTU previous-year questions, short-answer questions and the test series are solved in class.