Torque control of a DC commutator machine

Torque control of an independently excited DC commutator machine with a compensating (C) and commutating (B) winding. The armature (A) winding and the field (F) winding are both fed by a controlled current. This controlled current may be provided by a DC chopper (or controlled thyristor rectifier) with a current control (feedback) loop.
In a DC machine, the (stationary) armature current vector (in the animation ) is orthogonal to the flux vector () in the absence of armature reaction (i.e. a compensated machine). This condition, called field orientation, creates an ideal dynamic behaviour.
Please download the .ggb file and open with the Geogebra Classic 5 application (see https://www.geogebra.org/download) if the animation is too slow in your browser. The animation is designed to be opened on a 1080p screen and with "Make everything bigger" setting of Windows set to 100% (Change the size of text in Windows - Microsoft Support).
Any and all feedback is welcome and can be sent to timon.dewispelaere@kuleuven.be.