Comparison of Circulating and Non Circulating Current Modes in Converter

Comparison of Circulating Current and Non-circulating Current Modes

Sr. No

With
circulating Current

Without
circulating Current

1.

Reactors are required to limit the circulating current. These
reactors may be costly and bulky and consume lot of power.

Reactors are not required for normal operation but sometimes may have
to be used to make the load current continuous.

2.

Losses increase due to circulating current and hence efficiency
decreases.

Efficiency is higher.

3.

The converter current is due to presence of circulating current.

Converter current can be discontinuous.

4.

Less response time, therefore fast response.

Response time is more so slow response.

5.

Transfer characteristics are linear.

Transfer characteristics is nonlinear due to discontinuous current.

6.

The fault circulating current, due to undesired firing of converters
is limited by the current reactor.

Simultaneous firing of both the converter due to faulty signals will
create a short circuit condition.

7.

The converter current is higher than the load current, due to circulating
current.

The converter current is the same as output current.

Comparison of Circulating and Non-circulating Current Modes

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