Q2: (a): For a fully-controlled three-phase bridge rectifier circuit that fed from (delta to star transformer), Derive an equation to calculate the mean voltage of highly inductive load, assuming that ignition (firing) angle of each thyristor is different that of others (i.e. a# az# a;t ast ast ɑ6#). (b): Use the obtained formula from (a) to evaluate the mean voltage of highly inductive load and draw VL, the current of each thyristor, the current of Primary and secondary side of the transformer, if: a =a3 =a5=45° a2 =a4 =a6=60° Finally, calculate the RMS of currents that flow in thyristors and transformer.
Q2: (a): For a fully-controlled three-phase bridge rectifier circuit that fed from (delta to star transformer), Derive an equation to calculate the mean voltage of highly inductive load, assuming that ignition (firing) angle of each thyristor is different that of others (i.e. a# az# a;t ast ast ɑ6#). (b): Use the obtained formula from (a) to evaluate the mean voltage of highly inductive load and draw VL, the current of each thyristor, the current of Primary and secondary side of the transformer, if: a =a3 =a5=45° a2 =a4 =a6=60° Finally, calculate the RMS of currents that flow in thyristors and transformer.
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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KVL and KCL
KVL stands for Kirchhoff voltage law. KVL states that the total voltage drops around the loop in any closed electric circuit is equal to the sum of total voltage drop in the same closed loop.
Sign Convention
Science and technology incorporate some ideas and techniques of their own to understand a system skilfully and easily. These techniques are called conventions. For example: Sign conventions of mirrors are used to understand the phenomenon of reflection and refraction in an easier way.
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