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A voltage source inverter is normally employed when
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- source inductance is large and load inductance is small
- source inductance is small and load inductance is large
- both source and load inductances are small
- both source and load inductances are large
Correct Option: B
The current-source inverter (CSI) is a dual of a voltage-source inverter (VSI). The line-to-line voltage of a VSI is similar in shape to the line current of a CSI.
Advantages of the CSI.
(i) Since the input dc current is controlled and limited, misfiring of switching devices, or a short circuit, would not be serious problems.
(ii) Peak current of power devices is limited.
(iii) Commutation circuits for thyristors are simpler.
(iv) It has the ability to handle reactive or regenerative load without freewheeling diodes.
