R12 Release Notes

Three-Phase Transformer Blocks Added

Two new Three-Phase Transformer blocks have been added for Release 12. These functions implement a three-phase transformer with a configurable phase connection.

• Three-Phase Transformer (Two Windings)
• Three-Phase Transformer (Three Windings)

Power Electronics Enhancements

The Power System Blockset 2.1 enhances power electronics modeling by:

• Adding a universal bridge that allows continuous or discrete simulation of the three-phase bridges of diodes, thyristors, IGBT diodes, GTO diodes, or MOSFET diodes
• Adding a new IGBT model

These enhancements are found in the powerlib Power Electronics library.

Three-Phase Library Enhancements

The Power System Blockset 2.1 adds a 3-Phase Fault block. Also, the 3-Phase Breaker block now includes internal and external control.

These enhancements are found in the powerlib Extras Three-Phase library.

Elements Library Enhancements

The Power System Blockset 2.1 enhances the powerlib Elements library by:

• Adding the option to specify two and three windings for the Universal Three-Phase Transformer block
• Adding the option to specify internal or external breaker timing for the Circuit Breaker block

Power System Blockset 2.1 Release Notes

New Control Blocks