Error "Initial conditions solve failed to converge" when connecting two Simscape Fluid examples

Question

Fabian 2023-11-23

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2051362-error-initial-conditions-solve-failed-to-converge-when-connecting-two-simscape-fluid-examples

回答： Rishi 2023-12-7

I am trying to connect two Simscape Fluid examples called "Residential Air Source Heat Pump" and "Stratified Hot Water Tank". The simulation works when both models are not connected. However, connecting the control signal of a circulation pump from Residential Air Source Heat Pump to Stratifiend Hot Water Tank (as shown in the screenshot below), I get the following error message:

I would really appreciate some help

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Rishi 2023-12-7

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2051362-error-initial-conditions-solve-failed-to-converge-when-connecting-two-simscape-fluid-examples#answer_1367434

Hi Fabian,

I understand that the Simscape solver is not able to solve the initial conditions target in your model.

You can try the following steps to fix your issue:

If you have set the initial conditions of different blocks, ensure the “Start from steady state’ check box in the Solver Configuration block is unchecked. To learn more about Initial Conditions Computation, you can refer the following documentation: https://www.mathworks.com/help/simscape/ug/how-simscape-simulation-works.html#:~:text=Statistics%20Viewer.-,Initial%20Conditions%20Computation,-The%20Simscape%20solver
Prior to simulating the model, you can use the Variable Viewer (Debug > Simscape > Variable Viewer) to check the results of the initial condition computation for the model and to see which of the block-level variable initialization targets have been satisfied. You can find more information about Variable Viewer in the following documentation: https://www.mathworks.com/help/simscape/ug/variable-viewer.html

A similar issue has been addressed in this MATLAB Answer:

https://www.mathworks.com/matlabcentral/answers/526648-why-does-my-simscape-fail-to-solve-initial-conditions-when-i-enable-the-start-from-steady-state-op

Hope this helps.