Documentation

Circulating Current Inductors

Implement circulating current inductors for four-quadrant thyristor bridge converter

Library

Electric Drives/Fundamental Drives

Description

Circulating current inductors, commonly referred as inter-group-reactors (IGR), in a four-quadrant thyristor bridge converter, limit the circulating current in dual thyristor converters when the latter operates in circulating current mode.

The Circulating Current Inductors block consists of two pairs of inductors connected to each converter output for the single-phase configuration and for the three-phase configuration, respectively.

The circulating current produced by the instantaneous voltage difference at the terminal of both converters is limited by these inductors.

Parameters

Inductance (H)

The inductance, in henry, of each circulating current inductor. The default value is 80e-3.

Inputs and Outputs

+A1, -A1

Connect these terminals to the positive and negative terminals on the DC side of the positive thyristor bridge converter.

+A2, -A2

Connect these terminals to the positive and negative terminals on the DC side of the negative thyristor bridge converter.

m

Vector containing four measurement signals: the output DC voltages Vdc1 and Vdc2 and the currents Idc1 and Idc2 of the thyristor bridge converters.

Examples

The Circulating Current Inductors block is used in the DC2 and DC4 blocks from the Electric Drives library.

References

[1] Bose, B. K. Modern Power Electronics and AC Drives, NJ: Prentice-Hall, 2002.

Introduced in R2015b

Was this topic helpful?