Version 5.2 (R2009b) SimPowerSystems Software :: SimPowerSystems Release Notes (SimPowerSystems™)

Version 5.2 (R2009b) SimPowerSystems Software

This table summarizes what's new in Version 5.2 (R2009b):

New Features and Changes	Version Compatibility Considerations	Fixed Bugs and Known Problems	Related Documentation at Web Site
Yes Details below	Yes—Details labeled as Compatibility Considerations within descriptions of new features and changes, below. See also Summary.	Bug Reports Includes fixes	Printable Release Notes: PDF Current product documentation

New features and changes introduced in this version are

Enhanced `power_cableparam` Function

The power_cableparam function, introduced in Version 5.1 (R2009a) as part of the Computation of R L and C Cable Parameters (power_cable) demo, is now available as a standalone command-line function with associated graphical user interface. It lets you compute RLC parameters of radial copper cables with single screen, based on conductor and insulator characteristics. For more information, see the power_cableparam reference page.

Changes to the Fuel Cell Stack Block

The Fuel Cell Stack block has been improved to better represent the cell dynamics. The model parameters and the meaning of some detailed parameters have changed since the last release, as described in the following section.

Compatibility Considerations

The Fuel Cell Stack block parameters have been changed in Version 5.2 (R2009b). If you used the (No) User-Defined option for the Preset model parameter in previous releases and defined particular detailed parameters for your Fuel Cell Stack block, the software will automatically convert your old block parameters into new values corresponding to the block changes.

The following table compares the old parameter names to the new ones. It also provides details on how the new values are computed:

Old Parameters	New Parameters and Values
Open circuit voltage	Voltage at 0A and 1A [V_0(V), V_1(V)] `= [oldvalue, oldvalue*0.95]`

Old Parameters

New Parameters and Values

Open circuit voltage

Voltage at 0A and 1A [V_0(V), V_1(V)]

= [oldvalue, oldvalue*0.95]

New SimPowerSystems Demos

The following demos have been added in Version 5.2:

Demo Name	Description
Six-Pulse Cycloconverter (`power_cycloconverter`)	Illustrates a six-pulse cycloconverter driving a static load.
Speed Control of a DC Motor Using BJT H-Bridge (`power_Hbridge`)	Illustrates simulation of an H-bridge used to generate a chopped voltage and control speed of a DC motor, in open loop, in both directions.
Five-Cell Multi-Level Converter (`power_fivecells`)	Illustrates a five-cell multilevel converter driving a static load.
Multi-Level Modeling for Rapid Prototyping of Complex Systems (`power_HEV_MultiFidelity`)	Illustrates how to use different detail level in model simulation. For more information, see Multi-Level Modeling for Rapid Prototyping.