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Version 4.2 (R2006a) SimPowerSystems Software

This table summarizes what's new in Version 4.2 (R2006a):

New Features and Changes	Version Compatibility Considerations	Fixed Bugs and Known Problems	Related Documentation at Web Site
Yes Details below	No	Bug Reports Includes fixes	No

New features and changes introduced in this version are described here:

Average Values of electricdrivelib Blocks

Two more AC drives blocks, AC3 and AC5, in the electricdrivelib library now have a new parameter that allows you to specify average-value models, as opposed to detailed models, for the converters. This parameter was first introduced for some of the electricdrivelib library blocks in V4.1 (R14SP2+).

As of V4.2 (R2006a), average-value models are available for the following blocks:

• Space Vector PWM VSI Induction Motor Drive (AC2)

• Field-Oriented Control Induction Motor Drive (AC3)

• Self-Controlled Synchronous Motor Drive (AC5)

• PM Synchronous Motor Drive (AC6)

• Two-Quadrant Single-Phase Rectifier DC Drive (DC1)

• Four-Quadrant Single-Phase Rectifier DC Drive (DC2)

• Two-Quadrant Three-Phase Rectifier DC Drive (DC3)

• Four-Quadrant Three-Phase Rectifier DC Drive (DC4)

• One-Quadrant Chopper DC Drive (DC5)

• Two-Quadrant Chopper DC Drive (DC6)

• Four-Quadrant Chopper DC Drive (DC7)

To switch to the average-value representation, open the block dialog box and set the Model detail level option in the bottom portion of the dialog box to Average.

Transformer Blocks with SI Units Are Available

The Transformer blocks now have a parameter named Units, which allows you to specify the SI units or the pu units. In addition, this parameter can be used to automatically convert pu units into SI units, or the reverse.

Open Circuit Option Is Added for the RLC Blocks

The RLC branch blocks how have an extra option under the Branch Type parameter that allows you to specify an Open Circuit branch. This is particularly useful if you want to temporarily get rid of an RLC element in the circuit without deleting the block.

New Demos and Enhancements to Existing Demos

The following demos have been added.

Demo Name	Description
power_tcsc_phasor.mdl power_tcsc.mdl	Thyristor Controlled Series Capacitor (TCSC) test systems from Dr. Dragan Jovcic from University of Aberdeen, UK
power_asm1ph_auxcontrol power_asm1ph_vectorcontrol	The single-phase Asynchronous Machine block using the Main & auxiliary windings configuration

In the Wind Farm DFIG demos of the Distributed Resources library, control systems have been enhanced.

Version 4.3 (R2006b) SimPowerSystems Software

Version 4.1.1 (R14SP3) SimPowerSystems Software

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