In a three phase semi converter bridge circuit feeding RL large inductor load- if firing angle -2- then the rms value of source current isA-Assume constant load current of 10 A

In three phase semi converter, the analysis differs with the firing angle. nbsp; i.e., α gt; 60^∘ or α≤ 60^∘ Here in this case, it is α gt;60^∘ which is π ...

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In a three phase semi converter bridge circuit feeding RL (large inductor) load, if firing angle $α = \frac{π}{2},$ then the rms value of source current is_____A.
(Assume constant load current of 10 A)

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Solution

In three phase semi converter, the analysis differs with the firing angle.
i.e., $α > 60^{\circ}$
or $α \leq 60^{\circ}$
Here in this case, it is $α > 60^{\circ}$ which is $\frac{π}{2} = 90^{\circ} = α$
$∴$ Rms value of source current,
$I_{s (r m s)} = I_{0} \sqrt{\frac{π - α}{π}}$
$I_{s (r m s)} = 10 \times \sqrt{\frac{180^{\circ} - 90^{\circ}}{180^{\circ}}} = 10 \sqrt{\frac{1}{2}}$
$I_{s (r m s)} = 7.07 A$

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In a three phase semi converter bridge circuit feeding RL (large inductor) load, if firing angle α=π2, then the rms value of source current is_____A. (Assume constant load current of 10 A)

In three phase semi converter, the analysis differs with the firing angle. i.e., α>60∘ or α≤60∘ Here in this case, it is α>60∘ which is π2=90∘=α ∴ Rms value of source current, Is(rms)=I0√π−απ Is(rms)=10×√180∘−90∘180∘=10√12 Is(rms)=7.07A

In a three phase semi converter bridge circuit feeding RL (large inductor) load, if firing angle $α = \frac{π}{2},$ then the rms value of source current is_____A.
(Assume constant load current of 10 A)