Dual converter operating mode “In a dual converter operating in non-circulating current mode, a reactor (inter-connecting inductor) is used.” Is this statement correct?

Introduction / Context:Dual converters provide reversible DC voltage/power using two controlled bridges (converter groups) connected to the same DC load. They can operate in circulating-current mode or non-circulating-current mode, with different hardware requirements.

Given Data / Assumptions:

• Two full converters share the same DC terminals.
• Non-circulating mode means only one bridge conducts at a time.
• A reactor between bridges is used when both bridges may conduct simultaneously.

Concept / Approach:In circulating-current mode, both bridges are biased to produce nearly equal and opposite voltages; an inter-bridge reactor limits the circulating current. In non-circulating-current mode, gating ensures only one bridge conducts at any time; therefore no steady circulating current flows and no interconnecting reactor is required.

Step-by-Step Solution:Identify the mode: non-circulating.Consequence: only one converter is active at a time.Conclusion: no reactor is needed to limit inter-bridge current because bridges are not simultaneously on.

Verification / Alternative check:Standard DC drive schematics show the reactor explicitly in circulating-current mode diagrams; it is absent for non-circulating implementations.

Why Other Options Are Wrong:

• “True” or conditional variants contradict the definition of non-circulating mode.
• Load inductance does not create inter-bridge circulating current when one bridge is disabled.

Common Pitfalls:

• Assuming the reactor is universal to all dual converters.
• Confusing smoothing reactor on the DC side with inter-bridge reactor between converters.

Final Answer:False