Q5- A three-phase controlled rectifier is supplied from a 415V, 50Hz line and supplying an RLE load with 62, 25.5mH and 200V. The firing angle, af, is set to 60°. (i)- Determine the conduction mode. (ii) Determine the numerical expression of the output current (i,(wt)). (iii) On the same (ot) scale, draw the waveforms of the output voltage (vo) and sketch output current (io) and input current (iA). Mark the amplitudes at the peaks and the switching instants. (iv) Consider 50% safety margins for voltage and current select the voltage and current ratings of the switching devices

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Q5- A three-phase controlled rectifier is supplied from a 415V, 50HZ line and
supplying an RLE load with 62, 25.5mH and 200V. The firing angle, af, is set to
60°.
(i)- Determine the conduction mode.
(ii) Determine the numerical expression of the output current (i,(wt)).
(iii) On the same (@t) scale, draw the waveforms of the output voltage (vo) and
sketch output current (io) and input current (iA). Mark the amplitudes at the
peaks and the switching instants.
(iv) Consider 50% safety margins for voltage and current select the voltage and
current ratings of the switching devices
Transcribed Image Text:Q5- A three-phase controlled rectifier is supplied from a 415V, 50HZ line and supplying an RLE load with 62, 25.5mH and 200V. The firing angle, af, is set to 60°. (i)- Determine the conduction mode. (ii) Determine the numerical expression of the output current (i,(wt)). (iii) On the same (@t) scale, draw the waveforms of the output voltage (vo) and sketch output current (io) and input current (iA). Mark the amplitudes at the peaks and the switching instants. (iv) Consider 50% safety margins for voltage and current select the voltage and current ratings of the switching devices
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