Exam Details
| Subject | Advanced Power Electronics | |
| Paper | ||
| Exam / Course | B.Tech. VIEP- Electrical Engineering III (BTCSVI/BTECVI/BTELVI) | |
| Department | School of Engineering & Technology (SOET) | |
| Organization | indira gandhi national open university | |
| Position | ||
| Exam Date | June, 2016 | |
| City, State | new delhi, |
Question Paper
Describe the switching performance of a GTO with relevant voltage and current waveforms.
Give the merits and demerits of GTOs as compared to conventional thyristors.
2. Derive the approximate and exact equivalent circuits of an IGBT from its structural details. Also describe its output and transfer characteristics.
3. A 3-phase full converter is connected to a resistive load. Show that the average output voltage is given by <img src='./qimages/10934-3.jpg'> <br><br>
4. Describe the working of a single-phase full converter in the inverter mode with RLE load. Illustrate your answer with waveforms for source voltage, back emf, load voltage, load current, source current, current through and voltage across one SCR. Assume continuous conduction. Also find the circuit turn off time. Should the average output voltage be more than E during inverter operation? Discuss.
5. Sketch the output voltage waveform for a 3-phase semi-converter for a firing angle delay of 75°. Indicate the conduction of various elements and discuss whether freewheeling diode comes into play on the assumption of continuous load and current. Hence obtain an expression for the average output voltage by using both sine and cosine functions for the supply voltage.
6. Explain the square wave operation in a 3-phase inverter.
7. Describe a single-phase capacitor-commutated CSI connected to load R with the help of its power circuit diagram and waveforms for gating signals, load current, capacitor voltage, capacitor current, input voltage and voltage across one thyristor.
8. Explain clearly the current regulated PWM voltage source inverter along with its applications.
9. Explain the operation of Thyristor Controlled Reactors (TCRs) with the help of voltage and current waveforms.
10. Clearly explain Static VAR Compensator. Explain its advantages.
Give the merits and demerits of GTOs as compared to conventional thyristors.
2. Derive the approximate and exact equivalent circuits of an IGBT from its structural details. Also describe its output and transfer characteristics.
3. A 3-phase full converter is connected to a resistive load. Show that the average output voltage is given by <img src='./qimages/10934-3.jpg'> <br><br>
4. Describe the working of a single-phase full converter in the inverter mode with RLE load. Illustrate your answer with waveforms for source voltage, back emf, load voltage, load current, source current, current through and voltage across one SCR. Assume continuous conduction. Also find the circuit turn off time. Should the average output voltage be more than E during inverter operation? Discuss.
5. Sketch the output voltage waveform for a 3-phase semi-converter for a firing angle delay of 75°. Indicate the conduction of various elements and discuss whether freewheeling diode comes into play on the assumption of continuous load and current. Hence obtain an expression for the average output voltage by using both sine and cosine functions for the supply voltage.
6. Explain the square wave operation in a 3-phase inverter.
7. Describe a single-phase capacitor-commutated CSI connected to load R with the help of its power circuit diagram and waveforms for gating signals, load current, capacitor voltage, capacitor current, input voltage and voltage across one thyristor.
8. Explain clearly the current regulated PWM voltage source inverter along with its applications.
9. Explain the operation of Thyristor Controlled Reactors (TCRs) with the help of voltage and current waveforms.
10. Clearly explain Static VAR Compensator. Explain its advantages.
Other Question Papers
Departments
- Centre for Corporate Education, Training & Consultancy (CCETC)
- Centre for Corporate Education, Training & Consultancy (CCETC)
- National Centre for Disability Studies (NCDS)
- School of Agriculture (SOA)
- School of Computer and Information Sciences (SOCIS)
- School of Continuing Education (SOCE)
- School of Education (SOE)
- School of Engineering & Technology (SOET)
- School of Extension and Development Studies (SOEDS)
- School of Foreign Languages (SOFL)
- School of Gender Development Studies(SOGDS)
- School of Health Science (SOHS)
- School of Humanities (SOH)
- School of Interdisciplinary and Trans-Disciplinary Studies (SOITDS)
- School of Journalism and New Media Studies (SOJNMS)
- School of Law (SOL)
- School of Management Studies (SOMS)
- School of Performing Arts and Visual Arts (SOPVA)
- School of Performing Arts and Visual Arts(SOPVA)
- School of Sciences (SOS)
- School of Social Sciences (SOSS)
- School of Social Work (SOSW)
- School of Tourism & Hospitality Service Sectoral SOMS (SOTHSM)
- School of Tourism &Hospitality Service Sectoral SOMS (SOTHSSM)
- School of Translation Studies and Training (SOTST)
- School of Vocational Education and Training (SOVET)
- Staff Training & Research in Distance Education (STRIDE)
Subjects
- Active Filter Design
- Advanced Control System
- Advanced Power Electronics
- Applied Electromagnetics
- Basics Of Electrical Engineering
- Computer Process Control
- Control System
- Digital Electronics
- Electric Energy Utilization
- Electrical And Electronics Engineering Materials
- Electrical Instrumentation
- Electrical Machine - I
- Electrical Machines - Ii
- Electrical Machines And Electronics
- Electrical Measurements And Measuring Instruments
- Electro Mechanical Energy Conversion - I
- Electro-Mechanical Energy Conversion - Ii
- Electro-Mechanical Energy Conversion-Iii
- Electromagnetic Theory
- Energy Auditing And Analysis
- High Voltage Engineering
- Industrial Drives
- Micro Controllers
- Microprocessor And Applications
- Network Theory
- Power Quality Issues And Remedial Measures
- Power System
- Power System - I
- Stochastic Control Systems
- Switchgear And Protection