Abstract: A torque feedback signal for the control system of a motor-generator set is generated by a torque feedback circuit which includes a differentiator and a current sensing circuit. The differentiator is connected to sense generator output voltage and provide an acceleration torque signal which is proportional to the first derivative of generator voltage. The current sensing circuit provides an induced torque signal proportional to motor armature current, and this is summed with the acceleration torque signal to provide a feedback signal proportional to the torque at the motor rotor. A second embodiment is shown which separates the induced torque into steady-state and transient components. The transient component is summed with the acceleration torque signal to provide a transient torque feedback signal, and the steady-state induced torque component is fed back to establish a torque limit.