Unable to find the Specialized Power Systems group in simscape electrical in newer version r2025b

Is it relocated to other sub folder? I was particularly looking for universal bridge for simulating converters but I cant find the specific folder.

[BENYAHIA]

نفس السؤال

هل تم نقله إلى مجلد فرعي آخر؟ كنت أبحث تحديدًا عن جسر عالمي لمحاكاة المحولات، لكنني لم أجد المجلد المحدد.

[KIAHAU]

happened the same to me, and I am rushing for my project

Hows your day going

[Walter Roberson]

@BENYAHIA

No, it was not moved to a different sub-folder; it was removed.

[Sriya]

so what is the solution?

[Walter Roberson]

@Sriya

You can attempt to use spsConversionAssistant to convert models to Simscape Electric.

You can re-implement models using Simscape Electric.

You can deal with OPAL-RT Technologies to obtain their Simscape Power Systems replacement technology.

You can keep MATLAB R2025a around indefinitely to run SPS models.

[Luc-Andre]

@Sriya

As mentionned by @Pierre-Francois Allaire below, the toolbox formely known as SPS will now be fully supported by OPAL-RT.

First release is planned in the coming weeks.

[Muhammad Waqar]

This issue is explained in detail in this video link: https://youtu.be/e545_Qt5HuA

[Muhammad Waqar]

In MATLAB R2025b, MathWorks officially removed the Specialized Power Systems library — the one that included familiar blocks like Powergui, Universal Bridge, Voltage Measurement, and Three-Phase Source. These were part of the Simscape Electrical Specialized Power Systems (formerly SimPowerSystems) toolbox, used for power electronics, grid modeling, and electrical machines.

This issue is briefly explained in this video:

https://youtu.be/e545_Qt5HuA

[arman ghaderi]

This change is deeply misguided, it discards extensive work and thousands of hours, and it demotivates continued use of MATLAB or any related products. It breaks trust in the toolchain and pushes users to stop upgrading and reconsider their commitment to the ecosystem.

[Muhammad Waqar]

You are right. MATLAB is a trusted and useful software for engineers. It should avoid this suddent transition from SIMSCAPE SPS library to SIMSCAPE ELECTRICAL (Physical modelling).

Answer 1

[Pierre-Francois Allaire]

OPAL-RT Technologies has acquired the commercialization and development rights of SimPowerSystems (SPS).

We are committed to supporting all loyal SPS users to continue their experience with this essential tool.

A dedicated SPS website will be launched within the next 1–2 weeks, where you will be able to download the latest version of SPS, fully compatible with the most recent releases of MATLAB/Simulink.

👉 If you would like quicker access, please fill out OPAL-RT’s contact form with your request: https://www.opal-rt.com/contact-us/.

We are doing our utmost to ensure you a smooth transition — and to provide even more features in the future.

More info in the press room : https://www.opal-rt.com/news/a-new-era-for-simpowersystems/

Thank you all ! we got you !!

Answer 2

[P]

Please read this public press release :

https://www.opal-rt.com/news/a-new-era-for-simpowersystems/

[Walter Roberson]

Interesting.

They did not manage to achieve "uninterrupted support" though.

[P]

You are right, the way SPS availability was suddenly interrupted with no advice is quite unusal from the ones who commercialize it the past 25 years or so ...

However, what I understand from the OPAL RT press release is that you should be able to open and run your SPS models in the fall version of MATLAB (read R2025b) with no need of any conversion process.

[Kory]

Thanks for the info. I was trying to find information on which library is supported by OPAL-RT systems just yesterday. Converting my models to simscape has been a headache so it is good to know there will be alternatives available.

[Luc-Andre]

Hi @Kory,

My team was in charge of taking over SPS. We have tested all 200 examples model that were present in SPS from Matlab R2025a with the new OPAL SPS and they all run seamlessly. Simply install the new add-on, open the model, and it runs as before.

We will try to release an alpha version in the next few days for the early adopters. Let me know if you would be interested.

[Youwei]

Hi, @Luc-Andre , have you release the alpha version yet? when yes, which add-on should i choose ? Thanks !

[Paul Serna-Torre]

Where is the add-on? Is it compatible with Mac computers?

[Luc-Andre]

Hi @Youwei

Our team is working diligently to finalize the new SPS software release and set up the servers needed for its deployment. We’ll share an update here as soon as additional information is available. Thank you for your patience and understanding.

[Luc-Andre]

Hi @PAUL SERNA TORRE,

macOS support is planned, but it won’t be fully tested for the early release scheduled next week. It should function as expected, and if you experience any issues, please reach out to us — we’ll be happy to assist.

[Paul Serna-Torre]

Hi @Luc-Andre, I am little confused. I saw that ARTEMIS is only supported in Windows. But, you are saying that it will be supported in Mac, too. Can you explain this? Can I also access to an early version of the add-on for Mac? Please let me know how! Thank you

[Paul Serna-Torre]

I just filled out the form posted above to get an early version of the add-on.

[Luc-Andre]

Hi @Paul Serna-Torre,

We’d like to clarify that SPS Software functions as a standalone solution. The joint priority for OPAL-RT and Hydro-Québec has been to ensure a smooth and uninterrupted transition for all users.

You can expect the same workflows, license management, and performance as with the MathWorks version of SPS.

Our next goal is to continue advancing the product. Later this year, we plan to introduce additional IBR-related models, data center–style load representations, and new features improving load flow analysis.

[Paul Serna-Torre]

@Luc-Andre, thank you for your answer. I filled out a few contact forms and sent to OPAL-RT via its website, but unfortunately none of them were replied. Is the add-on already released? I saw that MATLAB 2025b still has SPS, so the plan is to keep the SPS tool there?

[Muhammad Waqar]

Please watch this video as well to understand the easy ways to transform your Simulink models to newer version:

https://www.youtube.com/watch?v=e545_Qt5HuA

Answer 3

[Graham Dudgeon]

The Specialized Power Systems Library will be available in the R2025b Update release expected in the next few weeks. Please contact MathWorks Support if you have additional questions.

[Paul Serna-Torre]

@Graham Dudgeon, so OPAL-RT won't take any action on the toolbox?

Answer 4

[Walter Roberson]

It was removed. This fact does not appear in the release notes.

I only know this because I happened to load a model that used specialized power system, and it told me that it had been removed and recommended a conversion script.

[Dave]

I have encountered this as well; all the Simscape Electrical Specialized Power System functionality has either been removed or replaced.

Have you been able to find a replacement for the PowerGui and all its functions?

[Pankit]

was it there in r2025a?

[Dave]

I'm reasonably sure they were all present in 2025a.

[Pankit]

is there a way to switch back to the older versions? i am using a trial

[Steven Lord]

I just checked the Simscape Electrical Release Notes and it now indicates that "Specialized Power Systems has been removed" in the release R2025b section.

[Walter Roberson]

@Pankit

You would have to ask Mathworks Sales to generate a trial license for an older version. Trial licenses cannot be used to access older releases.

Answer 5

[Kory]

I contacted support for more information on whether SPS would be supported in future releases and recieved this response:

"The SPS Library will be removed from Simscape Electrical in R2026a. However, in the older releases, you will be able to use the SPS Library. But it is recommended to plan a transition to Simscape native technology to take advantage of its superior modeling and simulation environment and for compatibility with future MathWorks releases."

Now I need to figure out how to rebuilt my system because the spsConversionAssistant only managed to convert less than half of my blocks :(

[Peter]

Thanks for the hint. Actually, I have just found PLECS Blockset (https://plexim.com/trial/blockset). It seems to be better targeted to power electronics than Simscape Electrical. It also integrates directly in Simulink and provides many library blocks dedicated for power electronics, including electrical, thermal, mechanical, magnetic and control domains.

[P]

No need to convert or transition your SPS model with OPAL-RT solution. Strong algorithms already in place to model and simulate Power Electronics in R2025b release, both off line and in real-time

Answer 6

[Götz]

The removal of SPS without notice is IMHO very bad business conduct. Such a decision should be announced in good advance to give users a chance to prepare for the transition. A simple statement hidden in the release notes ("SPS was removed") is far from being enough information. The proposed solution ("use Simscape Electrical instead") is in fact no practical solution as Simscape Electrical does not cover the full functionality of SPS and the documentation of Simscape Electrical is sometimes poor. The whole process is very intransparent. Not really good marketing for Mathworks.

Goetz

Answer 7

[Dave]

I sent an e-mail asking about SPS being removed, and got the following response:

Unfortunately, the Specialized Power Systems library is not available in the R2025b.

You can refer to the release notes below for more details: https://in.mathworks.com/help/sps/release-notes.html

The development team is aware of this, and it will be available in the future release. I apologize for not being able to provide a workaround currently.

[P]

This is not an acceptable answer, to my point of view, from such a compagny

Answer 8

[Ali Ramezani]

I have the same issue, and it seems they just decided to abandon it entirely and left us in this situation.

[Sam Chak]

Hi @Ali Ramezani

The removal of the Specialized Power Systems library is likely unintended. The library is still listed under Simscape Electrical in the Add-On Explorer menu. Furthermore, blocks such as powergui and Universal Bridge for the Specialized Power Systems models remain available in the documentation. The information in the Version History indicates that they were "Introduced before R2006a."

If a block is officially removed, as in the case of the Lookup Table block, the documentation will indicate the "(Obsolete)" status, accompanied by a note suggesting that users use the recommended alternative block(s).

If the older versions R2025a and R2024b are still available (i.e., not yet uninstalled) in your machine, you can load the Simulink file in those versions or potentially update the block links to the SPS library from the older versions in R2025b. However, I have not tested the latter approach.

I am unfamiliar with how to use the conversion script mentioned by @Walter Roberson. Perhaps, it may be related to these class files:

which powergui_class

/MATLAB/toolbox/physmod/elec/assistant/m/convclass/conv/powergui_class.p  % powergui_class constructor

which UniversalBridge_class

/MATLAB/toolbox/physmod/elec/assistant/m/convclass/conv/UniversalBridge_class.p  % UniversalBridge_class constructor

which DCVoltageSource_class

/MATLAB/toolbox/physmod/elec/assistant/m/convclass/conv/DCVoltageSource_class.p  % DCVoltageSource_class constructor

which AsynchronousMachineSIUni_class

/MATLAB/toolbox/physmod/elec/assistant/m/convclass/conv/AsynchronousMachineSIUni_class.p  % AsynchronousMachineSIUni_class constructor

[Walter Roberson]

This does not look like an accident to me. It looks planned.

The script name mentioned is spsConversionAssistant

[Sam Chak]

Hi @Walter Roberson

It is possible that the SPS library was planned for removal in a future release. However, users are usually notified in advance so that they can familiarize themselves with the alternative new blocks before the old blocks become completely obsolete.

https://www.mathworks.com/help/simulink/slref/interpretedmatlabfunction.html

Currently, this practice appears inconsistent with past removals. While the SPS library has been removed, the Version History in the documentation remains unchanged. Furthermore, there are no replacements for the removed SPS blocks. It does not seem that MathWorks intentionally caused difficulties for SPS users.

[P]

This is not an acceptable and fair way to treat loyal SPS customers....

Answer 9

[James]

I have used the Specialized Power System, Universal Bridge for many years. At least for me, it is not too difficult to change most of the simulations I have since I was using mostly 3-phase Converters. Most of the same features and some added features are in the individual Simscape models that need selected.

At the moment I have 2025a installed so I can show the differences between the Universal Bridge on the left and the 3-phase converter from Simscape on the right.

[Götz]

I agree that a conversion from SPS to Simscape Electrical is possible, esp. when only three-phase systems are considered. However, I personally find the documentation of the Simscape Electrical models incomplete and poor. As far as I know (there might be more documentation available that I do not know of) the names of the internal components and available measurements of a three-phase converter block in Simscape Electrical are not documented. In addition there seems to be no possibility to route internal measurement signals of a Simscape Electrical converter block on a scope.

[James]

True, but I use this type of model so the simulation does not take too long. If I want details of the IGBT, Diodes and Snubbers, I design a seperate model and then do a different type of simulation because of the complexity. I have always done it that way so my simulations do not take too long.

[Klein Bottle]

Simscape has rich functionality for modeling and simulating. For example, you can use Simscape logging to record all or a subset of the variables during a simulation and review later without re-running. To convert internal variables to Simulink signals to pass to a scope, for example, you can use the Simscape Probe block. Another tool to look at the internal variables of a component after logging is the Simscape Results Explorer.

Answer 10

[Ibrahim]

Hello,

Did anyone solve the problem ? it is realy urgent. i should work on my project.

[Walter Roberson]

The easiest fix for the moment is to go back to R2025a.

The longer term fix is to try using the spsConversionAssistant script

[Ibrahim]

please can you explain how can i go back to R202a, i tried but i couldnot do it.

i need to go because i need to get the values of the elements, like the RLC and the Voltage souce.

it is urgent please.

[Walter Roberson]

@Ibrahim

Visit https://www.mathworks.com/downloads/ . On the left-hand side near the top, select the MATLAB release you are interested in. Click the blue "Download for" button.

It is possible that the downloads site might only permit you to download R2025b. If so then you need to use a MATLAB Central account that has been activated for a MATLAB license.

It is possible that the downloads site might not permit you to download any version of MATLAB. If so then your institution has blocked MATLAB downloads, and you would need to contact your IT department to obtain MATLAB.

Answer 11

[Jason]

If you have an existing slx file, spsConversionAssistant does a relatively good job at replacing blocks with equivalent subsytems, but there isn't much support for devising SimScape alternatives on your own if you're starting from square one.

[Ali Ramezani]

Thank you, could you tell me where to locate "spsConversionAssistant"?

[Jason]

Simply type it in the command window with the relevant simulink model open.