Q17: A fully-controlled three-phase bridge rectifier circuit commutating diode across the highly inductive load (lo level). Draw the waveform of the output voltage and cal output voltage for a-90° and 380 V L-L three phase A.
Q17: A fully-controlled three-phase bridge rectifier circuit commutating diode across the highly inductive load (lo level). Draw the waveform of the output voltage and cal output voltage for a-90° and 380 V L-L three phase A.
Chapter59: Motor Startup And Troubleshooting Basics
Section: Chapter Questions
Problem 12SQ: How is a solid-state diode tested? Explain.
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Transcribed Image Text:Q17: A fully-controlled three-phase bridge rectifier circuit is modified by placing a
commutating diode across the highly inductive load (load current is continuous and
level). Draw the waveform of the output voltage and calculate the mean value of the
output voltage for a=90° and 380 V L-L three phase AC supply voltages.
e torq
Q18: For single-phase half- wave controlled rectifier circuit with inductive load (L-0.1 H
and R=102) and the AC supply is 240V ,50Hz. Let the firing angle of the thyristor
is a=90°. Find the value of the load current at the time (t=0. 005 s). Assume t-0 at
the instant of firing.
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