Hi, I'm trying to create a model of a lithium battery that will run with a discrete solver. The last hurdle I've come across seems to be the Thermal Mass block which I am using to simulate heat loss in the battery. The Thermal Mass block contains this line : Q == mass * sp_heat * T.der;. The T.der part seems to be what is preventing my model from running with a discrete solver as it is a continuous time derivative function. I have the following questions:
- Is there a discrete alternative to the Thermal Mass block?
- If not, is it possible to replace T.der by a discrete counterpart?
- Is is possible to incorporate the Discrete Differentiator block from the Simulink library into the Thermal Mass source code?
Thanks in advance.