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calculating time of current flow
calculating time of current flow
Hello,
I'm trying to figure out the lost energy due to the current flow. OpenModelica calculates LossPower for me, I just need to multiply this with time in order to calculate the energy.
To calculate the time, I've defined 2 variables and trying to write an while loop, something like this:
while resistor1.i <> 0 loop
counter_h = counter_h + 1;
end while;
while resistor1.i == 0 loop
counter_c = counter_c + 1;
end while;
energyLoss = (resistor1.LossPower + resistorS.LossPower) * (counter_h - counter_c)
The program won't simulate.
Do you have any suggestions?
Many thanks in advance
Thank you
Re: calculating time of current flow
Hi,
I would say that you are thinking as if you were using a sequential language. In the equation section I do not see how to use a while loop. I think it is only for the algorithm section, but also there I do not see clearly how to program in this way. I would use something similar to this:
model Integration
Real power;
Real energy;
equation
power=sin(2*Modelica.Constants.pi*time) "just to have possitive and negative values for power";
if power>0 then
der(energy)=power "here we are integrating only possitive power";
else
der(energy)=0;
end if;
end Integration;
Carlos
Re: calculating time of current flow
Yes, I only posted the algorithm section, since the rest of my program is not that relevant to the question.
And yes I understand what I should be doing now. I am relatively new to OpenModelica and still trying to figure it out
Your answer helped me a lot, many thanks.
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