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POWER ELECTRONICS –
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2150903
Code: 2150903
Credits: 5
Semester 5
EEE
Power Electronics – I
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GTU Previous Year Papers
Power Electronics – I Syllabus — Unit-wise Content
The official GTU curriculum for Power Electronics – I (subject code 2150903) as prescribed for EEE · Semester 5 divides the course into 6 units, covering 70 listed topics. The unit-wise breakdown below is read from the GTU syllabus document for this subject code, so you can check what the course actually covers before deciding which papers to attempt.
Download the official syllabus PDF (2150903)Unit 1 Power Semiconductor Devices
- Construction and Characteristics of Power diodes
- Power Transistors
- Power MOSFET
- Insulated Gate Bipolar transistors (IGBTs) Introduction to Thyristor family : SCR, DIACs
- Light Activated SCRs (LASCRs)
- Reverse Conducting Thyristor
- Asymmetrical SCR (ASCR)
- Gate turn-off Thyristors (GTOs)
- Integrated Gate- Commutated Thyristors (IGCTs)
- MOS controlled Thyristors (MCTs) Power Integrated circuits (PICs)
- Intelligent Modules
Unit 2 Thyristor Fundamentals
- Construction of SCR, Operating modes
- Two transistor analogy
- Static & dynamic characteristics
- Gate characteristics
- Turn on & turn off methods (Commutation methods)
- Series and Parallel operations of SCRs : Need
- String efficiency
- Static and Dynamic Equalizing circuit and Means to minimize the effect of mis-match Isolation of gate and base drive using pulse transformer and Opto- couplers Gate Drive/Triggering circuits: R trigger
- RC trigger
- Cosine Triggering
- UJT and Programmable UJT as an oscillator and triggering circuit based on them Ratings
- Cooling and Heat sinks
- Thermal Modeling
- di/dt and dv/dt protection
- Design of Snubber Circuit
- Over Voltage and Over Current protections
- Gate protections
- Electro Magnetic Interference(EMI) and Shielding
Unit 3 Phase Controlled (AC to DC) Converters
- Review of half-wave and full-wave diode rectifier (with RL load)
- Principle of phase controlled converter operation
- Operation of 1-phase half wave converter with R, RL and RLE load
- Significance of free- wheeling diode
- 1- phase full wave converter : Center-tapped and Bridge Configuration
- Operation and analysis with R, RL, RLE load
- Gating Requirements
- Conversion (Rectification) and Inversion mode of operation
- Operation and analysis of 1-phase Semi-converter/ Half- controlled converter: Asymmetric and Symmetric Configurations
- 3-phase converters : Operation of half wave converter
- Full wave fully controlled converters: Analysis and operation with different type of loads
- Rectification and Inversion Mode
- Semi-controlled converter
- Dual Converter: Principle and operation
- 1-phase and 3-phase configurations
- Simultaneous and Non-simultaneous operation Effect of source and load inductances
- Power factor improvement techniques
- Applications of AC-DC converters
Unit 4 DC to DC Converters
- The chopper
- Basic principle of DC chopper
- Classification of DC choppers
- Control strategies Basic DC-DC converter (switch regulator) topologies : Principle
- operation and analysis for Step-down (Buck)
- Step-up (Boost)
- Step up/down (Buck-Boost)
- Continuous conduction and Discontinuous conduction operation Chopper configurations: Voltage Commutated
- Current Commutated
- Load Commutated Chopper Multi-phase chopper
- Application of DC to DC converters
Unit 5 DC Drives with phase controlled converters
- Basic characteristics of DC motors
- Two zone operation
- Four quadrant operation (Operating modes)
- Principles of DC motor speed control Single phase separately excited drives: Half Wave converter
- Semi- converter and Fully Controlled converter based drives
- Braking operation of separately excited drive Single phase Series DC motor drive: Semi-converter and Fully Controlled coverter based drives 3-phase separately excited drives: Half Wave converter
Unit 6 DC drives with dc-dc converters
- Principle of power control (motoring control) of separately excited and series motor with DC-DC Converter
- Steady- state analysis Principle of Regenerative Braking
- Chopper configuration for Regenerative braking
- Analysis for minimum and maximum speed for Regenerative Braking
- Combined regenerative and rheostatic brake control
- Two and four quadrant DC-DC converter drives
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