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A 3-phase converter feeds a pure resistive load at a firing angle of α = 60°. The average value of current flowing in the load is 10 A. If a very large inductance is connected in the load circuit, then
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- average value of current will remain as 10 A
- average value of current will become greater than 10 A
- average value of current will become less than 10 A
- trend of variation of current cannot be predicted unless the exact value of the inductance connected is known
Correct Option: A
Current flowing in the load may be expressed as
| i (t) = 10 + |  |
When a very large inductance is connected in the load circuit, the flow of alternating current components will be blocked and the direct current of 10 A will flow. Thus average value of current will not be affected and since the inductance is very large, all the ripples are eliminated.
