MATLAB: Variable resistance in Simscape

Simscapesimulink

Hello, I am building a Simulink model where I need to add a variable resistance element whose resistance depends on some conditions. There is no variable resistor in SimPowerSystems and when I used the variable resistor in Simscape\Foundation LIbrary\Electrical\Electrical Elements it would not connect to it. Probably its because of the mismatch in SimPower and Electrical Element library I guess.

Is there way to be solve this issue or am I doing something wrong?

Thanks in advance.

Best Answer

You're right... However, you can make your own custom variable resistor in SimPowerSystems by measuring the voltage and applying a current.

Look at the power_VariableInductor shipping example, which shows how you could make a variable inductor. A resistor would be easier.

- Sebastian

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Hello, Adroit,

You can combine a current meter and a controlled voltage source to create a variable resistor. Please see attached model.

Regards,

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An example model has been created to show an example of a variable inductor block built using Simulink blocks and SimPowerSystems blocks. This model can be accessed by selecting Demos from the Help menu, or by executing the following command in MATLAB:

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