Equivalent Circuit Model with various conditions

[hokonkim]

Hello, PyBaMM communities

I start to use PyBaMM for my work.

Now I'm trying to model equivalent circuit model (ECM) from the scratch.

I would like to model some various conditions.
(e.g., 1 resistor + 0 RC (simplest)
1 resistor + 1 RC (simplest), etc..)

Based on the document related to Thevenin model, I changed the number of RC from 1 (default) to 0.

But the result from 0 RC looks the same with that from 1 RC.

If I would like to start from 1 resistor + 0 RC condition first, then what am I supposed to do?

Here is the code that I used.

import pybamm
pybamm.set_logging_level("INFO")
options = {'operating mode': 'current', 'number of rc elements': 0}
model = pybamm.equivalent_circuit.Thevenin(name='Thevenin Equivalent Circuit Model', options=options)
experiment = pybamm.Experiment(
[
    (
        "Discharge at C/10 for 10 hours or until 3.3 V at 25oC",
        "Rest for 30 minutes at 25oC",
        "Charge at 10 A until 4.1 V at 25oC",
        "Rest for 30 minutes at 25oC",
    ),
] * 6
)
sim = pybamm.Simulation(model, experiment=experiment)
sim.solve()
sim.plot(colors='blue')

In addition, when trying RC elements more than 1 (e.g., RC elements=2), then I got the error message like this:
"'R2 [Ohm]' not found. Best matches are ['R1 [Ohm]', 'R0 [Ohm]']"

I would like to see how the change will happens depending on the element of ECM.

[balaji3112]

I guess you need to define the new terms(R2) in the parameter file where R1, R0 were already defined.