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txo 2. The single-phase controlled full-wave rectifier shown has a source of 220 Vr.m.s at 50 Hz, and is feeding a load R = 20 22 and L = 40 mH. The firing angle is a = 45° and the extinction angle is ß-230°. (a) Specify whether the current is continuous or discontinuous (b) Sketch the voltage and current waveforms across the load (c) Determine the average load voltage and current. (d) Determine therms load voltage and Vs in/ T3 VL R

txo 2. The single-phase controlled full-wave rectifier shown has a source of 220 Vr.m.s at 50 Hz, and is feeding a load R = 20 22 and L = 40 mH. The firing angle is a = 45° and the extinction angle is ß-230°. (a) Specify whether the current is continuous or discontinuous (b) Sketch the voltage and current waveforms across the load (c) Determine the average load voltage and current. (d) Determine therms load voltage and Vs in/ T3 VL R

Introductory Circuit Analysis (13th Edition)
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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EXO 1 What are DC Choppers? Explain what TRC (Time Ratio Control) is b. A Buck Converter is used with a 2mH inductor and a supply voltage of 15V. The load resistance is maintained at 1 22. The switching frequency is 100 kHz. i. Determine the duty cycle needed for an output voltage of 5V. ii. Calculate the output supply voltage ripple. iii. What are the consequences of decreasing the load resistance by 50% (to 0.5 ohms)? c. Identify the class of converter in the figure and describe the principle of operation of such a converter. d. State a possible application of such a converter. e. Draw the output waveforms of the current and voltage and the gate pulses of the choppers. Indicate on the current waveform the region of operation of the choppers and diodes. Exo 2. 2. The single-phase controlled full-wave rectifier shown has a source of 220 Vr.m.s at 50 Hz, and is feeding a load R = 20 22 and L = 40 mH. The firing angle is a = 45° and the extinction angle is ß= 230°. (a) Specify whether the current is continuous or discontinuous (b) Sketch the voltage and current waveforms across the load (c) Determine the average load voltage and current. (d) Determine the r.m.s load voltage and current. (e) Determine the a.c and d.c powers absorbed by the load. (f) Determine the efficiency of the converter. Vs CH, CH₂ Chopper ir/ TI T4 T2 D₂ T3 VL mooooo iL L Vo E L
Transcribed Image Text:EXO 1 What are DC Choppers? Explain what TRC (Time Ratio Control) is b. A Buck Converter is used with a 2mH inductor and a supply voltage of 15V. The load resistance is maintained at 1 22. The switching frequency is 100 kHz. i. Determine the duty cycle needed for an output voltage of 5V. ii. Calculate the output supply voltage ripple. iii. What are the consequences of decreasing the load resistance by 50% (to 0.5 ohms)? c. Identify the class of converter in the figure and describe the principle of operation of such a converter. d. State a possible application of such a converter. e. Draw the output waveforms of the current and voltage and the gate pulses of the choppers. Indicate on the current waveform the region of operation of the choppers and diodes. Exo 2. 2. The single-phase controlled full-wave rectifier shown has a source of 220 Vr.m.s at 50 Hz, and is feeding a load R = 20 22 and L = 40 mH. The firing angle is a = 45° and the extinction angle is ß= 230°. (a) Specify whether the current is continuous or discontinuous (b) Sketch the voltage and current waveforms across the load (c) Determine the average load voltage and current. (d) Determine the r.m.s load voltage and current. (e) Determine the a.c and d.c powers absorbed by the load. (f) Determine the efficiency of the converter. Vs CH, CH₂ Chopper ir/ TI T4 T2 D₂ T3 VL mooooo iL L Vo E L
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