Download GTU BE/B.Tech 2019 Winter 7th Sem New 2170906 Advanced Power Electronics Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 7th Sem New 2170906 Advanced Power Electronics Previous Question Paper

Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ? VII (New) EXAMINATION ? WINTER 2019
Subject Code: 2170906 Date: 23/11/2019

Subject Name: Advanced Power Electronics
Time: 10:30 AM TO 01:00 PM Total Marks: 70

Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.


Q.1 (a) With block diagram Compare Linear voltage regulator and Switch mode voltage regulator. 03
(b) Compare HVDC transmission over EHVAC transmission based on Economics of
Transmission, Technical Performance & Reliability
04
(c) With neat circuit diagram & waveform explain the operation of a BOOST converter in CCM
and Derive the equation of (1) Peak to Peak Inductor Current (2) Peak to Peak Capacitor
Voltage (3) Critical value of inductor & Capacitor.
07

Q.2 (a) What is the need of Resonant Converter? Compare Series Loaded Resonant (SLR) converter
with Parallel loaded resonant (PLR) Converter
03
(b) Explain the operation of FORWARD Converter in Continuous Current Mode. Derive the
Equation of Output Voltage.
04
(c) What do you mean by Zero Voltage Switching (ZVS). With neat circuit and waveform
explain the operation of ZVS Converter
07
OR
(c) Explain the operation of Series loaded resonant (SLR) converter in (1) Discontinuous
Current Mode (?s ?
?? ?? ?o) (2) Continuous Current Mode (
?? ?? ?o ? ?s ? ?o)
07
Q.3 (a) Explain the concept & need of Multi Level Inverter (MLI) 03
(b) Explain the operation of Class E converter 04
(c) Explain the operation of 5-Level DCMLI. Also discuss problems associated with DCMLI
and how it will overcome.
07
OR
Q.3 (a) Explain Concept and requirement of Multi Pulse Converter (MPC) 03
(b) Draw the one line diagram of HVDC & Discuss the equipments of HVDC systems. 04
(c) With neat circuit diagram and waveform, Explain the operation of 5-level cascade H-bridge
Inverter
07
Q.4 (a) Classification Of FACTS devices. 03
(b) Explain the operation of SEPIC converter. Derive the Equation of Output Voltage. 04
(c) Explain the how source current Harmonic Elimination using 12 Pulse Converter 07
OR
Q.4 (a) What is the need of Reactive Power Compensation? 03
(b) Explain the operation of CUK converter. Derive the Equation of Output Voltage 04
(c) Explain following transformer connection with phasor diagram used in multi pulse
converter. (a) Y-Z1 (b) ?-Z1
07
Q.5 (a) What is FACTS? Discuss the advantages of FACTS in brief. 03
(b) Explain working principal of SSSC. 04
(c) Explain TCR with circuit diagram. Draw current and voltage waveforms for different values
of ?.
07
OR
Q.5 (a) Comparison of SVC & STATCOM. 03
(b) Explain working principal of UPFC 04
(c) Explain the Operation of FC-TCR. 07

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