MATLAB: SimScape Solver Block Configuration Error

Simscape

I am receiving a solver block error. Specifically:

['modelName/Solver Configuration1', 'modelName/Solver Configuration2']: Multiple Solver Configuration blocks connected to Physical Network. Each physical network must be connected to exactly one Solver Configuration block.

Why does this error occur?

Best Answer

In Simscape, a single system of equations, which is equivalent to a set of connected blocks, needs exactly one solver block. You may find more information on Solver Configuration block this at the link below:

https://www.mathworks.com/help/physmod/simscape/ref/solverconfiguration.html

Deleting one of the solver blocks in the model allows it to run without an error message.

Related Solutions

MATLAB: Negative thermal resistance in SimScape

When you check the source code of the Thermal Resistance block, it is indeed hard-coded that the thermal resistance is larger or equal than zero.

component resistance < foundation.thermal.branch
% Thermal Resistance
% This block represents a generic resistance in a thermal network. The heat
% flow rate is proportional to the temperature difference and inversely
% proportional to the resistance.
% Copyright 2016 The MathWorks, Inc.
parameters
    resistance = {1, 'K/W'}; % Thermal resistance
end
equations
    assert(resistance >= 0)
    if isfinite(resistance)
        T == resistance * Q;
    else
        Q == 0;
    end
end
end

Unfortunately, you cannot simply change that line of code in the standard Simscape library block.

You may want to investigate creating a custom Simscape block/library.

https://nl.mathworks.com/help/physmod/simscape/lang/create-a-custom-block-library.html

https://nl.mathworks.com/help/physmod/simscape/lang/creating-custom-components.html

I have not done this myself but I believe this is your only possibility of solving the issue.

Best Answer

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MATLAB: Negative thermal resistance in SimScape

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