Feature Request – Non–Permanent-Magnet Motor Settings #1018
Description
At present, Falstad’s DC Motor element assumes a permanent-magnet field: the back-EMF constant (Ke) and torque constant (Kt) are independent of each other. This approach is fine for simple demonstrations, but it limits the simulator’s usefulness when studying more complex or realistic motor behaviour.
I recommend that an option be added to tie these two variables together — ideally through:
- A single linked slider or parameter to replicate their proportional relationship (so that changing one updates the other automatically); or
- A more advanced feature allowing one or more separate inductors or contactor coils to influence Ke and Kt dynamically, based on the effective magnetic field strength produced by those elements. For example, the equation Ke=KT=sqrt(sum(L * I^2))
This change would make it possible to model wound-field DC machines, field-weakening control, and regenerative braking systems far more realistically, while retaining backward compatibility for simple permanent-magnet use cases.