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<p class="MsoNormal"><span lang="EN-US">Dear TRNSYS users,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I need help about problem of convergence in coupling an EES model, Type 56 and a controller. I apologize for that long mail.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I’m trying to simulate a kind of active wall (partition between two rooms) in order to heat one of the room of a building.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">This active wall has been modeled with EES software.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Here is a scheme of it:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:FR"><img width="450" height="291" id="Image_x0020_2" src="cid:image001.jpg@01CEEC51.AC188FC0"></span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">This model has been coupled with Type 56 through type 66 as it is shown below:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> </span><span style="mso-fareast-language:FR"><img width="358" height="260" id="Image_x0020_3" src="cid:image007.jpg@01CEEC51.AC188FC0"></span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Initially, the electric power supplied to the active wall was supposed to be constant and the simulation run very well !!! The coupling method is good.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Then, I tried to add a controller on electric power (iterative feedback controller Type 22 or PID controller Type 23), in order to heat the room1 at a given setpoint temperature, as shown below.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:FR"><img width="403" height="284" id="Image_x0020_1" src="cid:image008.jpg@01CEEC51.AC188FC0"></span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">Unfortunately, an error message appears (at the first timestep in the case of Type 22, after 10 timesteps in case of Type 23):<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">“TRNSYS Message 129 : The referenced Unit has tried to set an Output value higher than the number of Outputs that the Type reserved for itself.”<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">To be precise, the parameter “number of outputs” in type 66, is in accordance with the number of outputs given by the EES model.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:12.0pt">Could somebody help me? Is it a problem of convergence? Is there another way to simulate this ? How to debug it?<o:p></o:p></span></b></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Best regards.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-top:3.0pt;text-autospace:none"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana","sans-serif";mso-fareast-language:FR">Matthieu COSNIER</span></b><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif";color:#1F497D;mso-fareast-language:FR"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D;mso-fareast-language:FR"><o:p> </o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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