A Study on an Optimal Torque for Power Regeneration of an Induction Motor

This paper proposes a design methodology of a regenerating braking torque for an induction motor in order to regenerate power as much as possible. At first, models of dissipation power in rotation and the copper losses in both a stator and a rotor are given. Then, a function of a regenerative power is derived from these losses, regenerating torque for the function of the regenerative power. A vector control method is employed in order to control the torque instantaneously in the case of acceleration and regeneration. The effectiveness of the proposed design method of the regenerative torque is illustrated by simulations.