3.1 (a) Define inverter along with its various industrial applications. (b) Explain theoperation of line-commutated inverters. (c) What are the differences between line-commutated and force-commutated inverters?3.2 (a) Describe the working of a single-phase half-bridge inverter. What is its maindrawback? Explain how this drawback is overcome. (b) What is the purpose of connectingdiodes in antiparallel with thyristors in inverter circuits? Explain how these diodes comeinto play.3.3 Draw the load voltage and load current waveforms for single-phase full-bridgeinverter with (a) R (b) RL or RLC overdamped, and (c) RLC underdamped. Explain thenature of these waveforms.3.4 For a single-phase full-bridge inverter, V, = 220 V dc, T=1 ms. The load consists ofRLC in series with R 2 Q, OL = 8 2, 1/oC = 7 2. (a) Draw various waveforms. Also%3Dfind the RMS value of the fundamental component of load current. (b) Find the powerdelivered to load due to fundamental component. (c) Check whether forced commutationis required or not.3.5 Write Fourier series expression for the output voltages and currents of single-phasehalf-bridge and full-bridge inverters.3.6 (a) A single-phase full-bridge inverter is connected to a DC source of Vs. Resolve theoutput voltage wave shape into Fourier series. (b) A single-phase full-bridge inverterdelivers power to RLC load with R = 2 Q and XL = 10 N. The bridge operates with a%3Dperiodicity of 0.3 ms. Calculate the value of C so that load commutation is achieved bythe thyristors. Turn-off time for thyristors is 12 us. Factor of safety is 1.5. Assume theload current to contain only the fundamental component.

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3.1 (a) Define inverter along with its various industrial applications. (b) Explain the operation of line-commutated inverters. (c) What are the differences between line- commutated and force-commutated inverters? 3.2 (a) Describe the working of a single-phase half-bridge inverter. What is its main drawback? Explain how this drawback is overcome. (b) What is the purpose of connecting diodes in antiparallel with thyristors in inverter circuits? Explain how these diodes come into play. 3.3 Draw the load voltage and load current waveforms for single-phase full-bridge

3.1 (a) Define inverter along with its various industrial applications. (b) Explain the operation of line-commutated inverters. (c) What are the differences between line- commutated and force-commutated inverters? 3.2 (a) Describe the working of a single-phase half-bridge inverter. What is its main drawback? Explain how this drawback is overcome. (b) What is the purpose of connecting diodes in antiparallel with thyristors in inverter circuits? Explain how these diodes come into play. 3.3 Draw the load voltage and load current waveforms for single-phase full-bridge

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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