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.

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 !

Answer 3

[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 4

[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 5

[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 6

[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 7

[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 8

[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.