How to design MATLAB Simulink model for easy real time simulation implementation?

Hello Everyone!

I am trying to simulate a three phase grid connected inverter for voltage and reactive power control purpose. After my simulation is done I want to implement it in OPAL-RT real time simulation and later do the experiment. My question is how should I design my model so that it is easily implementable in real time simulator and then later for experiment. To be specefic, what sample time I should choose? How much should be switching frequency, using discrete or continous powergui? Also, which solver should I choose? Because all of these parameters can effect the performance of my model especially when implementing on real time simulator.

Answer 1

[Atanda Raji]

You will find the answers to all your questions on the OPAL-RT website. You have to invest time in how to configure the real-time simulator hardware, how to prepare your model, how to detect and resolve overrun time, etc. Visit the site below for more information.

https://www.opal-rt.com/

[Akhtar Javed]

Thank you Atanda. I will check on Opal-rt website and I think there are youtube videos for it as well.

Answer 2

[Atanda Raji]

Yes,there are quite useful videos, technical presentation, peer-reviewed papers on their website.

[Nagulapati]

While building my model with MPC in OPAL-RT environment, I am getting the following error. Can anyone guide me as to why I am getting this error and possible solution.

??? Error using opInitFunction>DisplaySimulinkError (line 466)

??? Simulink error :

Update diagram of Simulink model failed. Please check that the model can run offline in Simulink.

Error using opInitFunction>CompileModel (line 482)

Error evaluating 'InitFcn' callback of MPC block (mask) 'sap_LOsfb_new/SM_LO/MPC Controller'.

Callback string is 'impcblock_InitFcn'

Error in opInitFunction>GenerateModel (line 347)

CompileModel(model);

Error in opInitFunction (line 101)

GenerateModel(action, model, platform, preBuildCmd, postBuildCmd, listSub, StandAloneModel, SlxFormat, compilerVersionName); - Show complete stack trace

Caused by:

Error using opInitFunction>CompileModel (line 482)

Cannot resolve: mpc1. - Show complete stack trace

Error in opInitFunction>CompileModel (line 509)

DisplaySimulinkError(simulink_err);

Error in opInitFunction>GenerateModel (line 347)

CompileModel(model);

Error in opInitFunction (line 101)

GenerateModel(action, model, platform, preBuildCmd, postBuildCmd, listSub, StandAloneModel, SlxFormat, compilerVersionName);

??? Error preparing original model for code separation.