[Scilab-Dev] demande

[Simone Mannori]

Dear Raymundo,

There is a recurring problem using Scilab/Scicos for engineering
applications: the identification of systems parameters.

One of the difficulties of the models used in SimPower is the
mathematical/physical modeling used in the block. The Italian electrical
engineers (and the industries that make motors and generators) use
slightly different model from the Simulink one.

Unfortunately there is not 1:1 correspondence between them. Usually, we
prefer build the model from scratch using elementary blocks.

If you are interested to develop a power system toolbox for Scicos you
are very welcome :) Scicos-PST ? 

We are working in close contact with Microchip for Scicos-FLEX.
Microchip have several product lines for power system applications and
they have expressed their interest to extend FLEX to motor control.

Another interesting point is the modeling of the power section (MOSFET
or IGBT bridge) using Modelica. This kind of simulation could be
extremely useful because you can study the behavior of the power section
under stress (e.g. when you have a short circuits between phases or very
long connection cables).

I suppose that you are aware of the interaction between the control
strategy and the EMC issues. In Europe the EMC is a pass/fail strict
law.

If you are interested in this field - as I am - we can start a
productive collaboration. 

Thanks again for using Scilab/Scicos :) 

Simone Mannori - Scilab/Scicos Embedded Applications Eng.

P.S. May I join - of just see - your video conference ?



On Tue, 2008-01-29 at 16:34 -0500, Cordero R. wrote:
> Dear Simone,
>  
> Firstly, I want to apologize for my error. I want to answer a email
> from Anissa Raheme (that is why I use madame). I made a model of a
> squirel cage induction motor for my thesis and because I work in a
> research center in my country, Perú: CIEEP,  
>  
> I compared my model with the model in the SimPower system of MATLAB,
> with the same results. 
> In my model, I enter the values of resistors, inductances, pair of
> poles, friction, moment of inertia, etc. in the Diagram->context of
> SCICOS. There is a variable, Lx, which is automatically calculated and
> its part of the model. 
>  
> In the future, I would like to make a library like the SimPower System
> of MATLAB. Now, I am making libraries of field oriented control (FOC)
> and direct torque control (DTC) and SV-PWM inverter, and make lots of
> publications in the IEEE using SCILAB, because nobody in my country
> has made something like that.
>  
> I send you my model.
>  
> Raymundo Cordero 
> CIEEP-Perú
>  
> PD: On 30th January, I will give a videoconference in two
> universities of Perú about SCILAB as an open-source tool in electronic
> engineering. The objective is to promote the use of SCILAB in
> universities.
> 
> 
> 2008/1/29, Simone Mannori <Simone.Mannori at inria.fr>: 
>         Dear Raymundo,
>         
>         my name is Simone Mannori. I'm Italian, so this means that I'm
>         just a
>         man and not a woman. Now that we have fixed this little
>         detail,
>         we can pass to our real core business :)
>         
>         With Scilab/Scicos you can model and simulate the full electro
>         mechanical system: mechanical load, motor, power drive, PWM
>         generation
>         and control circuits.
>         
>         Several years ago I made a full simulation using "the other"
>         non open
>         source simulator ad I manually coding the control algorithm
>         for a TI DSP
>         (TMS 320F240) using C and assembly language.
>         
>         If you ask if we have a ready made Scicos model for this kind
>         of
>         application the answer is, unfortunately, no.
>         
>         If you have developed a model and you are looking for help or
>         suggestions to optimize your simulation, please send us your
>         files.
>         
>         After that we will be very pleased to discuss your specific
>         requirements.
>         
>         Simone Mannori - Scilab/Scicos Embedded Applications Eng.
>         
>         
>         On Mon, 2008-01-28 at 21:54 -0500, Cordero R. wrote:
>         > Dear Madame
>         > I have made  a model of a squirel-cage induction motor, a
>         SV-
>         > PWM inverter and the algorithm of direct torque control
>         (DTC) in
>         > SCICOS. Now, I am investigating a better control algorithm
>         based on a
>         > synchronous reference of a stator current and voltage.
>         > I hope someone can translate it in french.
>         > Regards
>         > Raymundo Cordero G.
>         > CIEEP-Perú
>         >
>         > 2008/1/28, Anissa Raheme <anissa16 at yahoo.fr>:
>         >         bonjour
>         >         je te demande de m'envoyer les bloc de simumlation
>         en matlab
>         >         simulink de la regulation de la vitesse d'un moteur
>         asynchrone
>         >         en utilisnt logique flou adaptatif au sein de la
>         commande
>         >         vectorielle
>         >         merci
>         >
>         >
>         >
>         >
>         >
>         >
>         >
>         >
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>