Version 3.0 (R13SP1) SimPowerSystems™ Software Release Notes

Version 3.0 (R13SP1) SimPowerSystems™ Software

This table summarizes what's new in Version 3.0 (R13SP1):

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

Terminal Ports and Connection Lines

Version 3.0 introduces the terminal port, specific to the electrical domain of Physical Modeling and different from the Simulink^® input and output ports. It is represented on blocks by a small white square . You can branch the electrical connection lines connecting such terminal ports. The electrical connection lines of the Physical Modeling domain, unlike Simulink signal lines, are intrinsically nondirectional.

Separating SimPowerSystems™ and Simulink^® Lines and Ports

In the previous versions of SimPowerSystems™ and Power System Blockset™ software, the electrical block ports were modeled by Simulink input and output ports. The distinction between Simulink ports and electrical terminal ports is now clearly defined. You cannot connect terminal ports to Simulink input and output ports. For example, you cannot by mistake connect a Simulink Scope block directly to the phase terminals of a Synchronous Machine block.

You must also keep Simulink signal lines and SimPowerSystems electrical connection lines separate. You cannot connect one type of line to the other by branching.

Blocks That Interface Between Simulink^® and SimPowerSystems™ Domains

In Version 3.0, SimPowerSystems blocks can have only terminal ports or only Simulink ports, or both types. Blocks such the Synchronous Machine block and the Thyristor block feature both port types. Such blocks serve as interfaces between the part of your model connected by Simulink signal lines and the part connected by electrical connection lines.

Compatibility Considerations

Converting Version 2 Models to Version 3.   Version 3.0 provides the psbupdate command to convert your old Version 2 models to the new block library and interface of Version 3. See the HTML or PDF forms of the special documentation for model conversion. If you are viewing these Release Notes in PDF form, note that the HTML form of the Release Notes provides links to both forms of the conversion guide.

Keeping Version 2 and Version 3 Blocks Separate.   The Version 3 powerlib and Version 2 powerlib2 block libraries form separate, parallel resources for creating power system models. These two block libraries and their interfaces are not compatible.

Building and Running Models with the Version 2 Library.   For your convenience, you can open and simulate your old Version 2 models in Version 3.0 and obtain the same simulation results you would get with previous releases. You can also build new models with the old Version 2 block library, powerlib2.

You can access the Version 2 block library by entering powerlib2 at the command line. It is strongly recommended, however, that you use the powerlib block library to take the full advantage of Version 3.0.

Note   You cannot put Version 2 and Version 3 blocks in the same model file.

Accessing the Version 2 Documentation.   For your convenience, SimPowerSystems documentation for Version 3.0 includes links to the old documentation of Version 2.3. This documentation is available in PDF format. If you are viewing these Release Notes in PDF form, note that the HTML form of the Release Notes provides a link to the old documentation.

Renamed SimPowerSystems™ Commands

In Version 3.0, the analysis commands of earlier versions have been renamed.

power_analyze

power_analyze is the new name for the old power2sys command. With it, you can analyze models built with the new block library of Version 3.0.

power_init

power_init is the new name for the old powerinit command. You use it exactly the same way you would use the powerinit command.

power_statespace

power_statespace is the new name for the old circ2ss command. You use it exactly the same way you would use the circ2ss command.

Compatibility Considerations

You can still use the analysis commands of earlier versions with old models.

The powerinit and circ2ss commands are compatible with either Version 2 or Version 3 models.

You should use the power2sys command only for old models built with previous versions of software. If you want to analyze Version 3 models, you must use the new power_analyze command.

Version 3.1 (R14) SimPowerSystems™ Software

Compatibility Summary for SimPowerSystems™ Software