A Loss minimization controller can be cooperated with an adjustable speed motor drive in various ways, depending on
how the motor drive application is speed controlled. The different speed control implementations include scalar
voltage or scalar current technique (V/Hz control), field oriented current control (FOC), which is also known as
vector control technique and direct torque control (DTC).The FOC technique gets over the limitations of V/Hz technique by decoupling the torque and magnetizing flux, i.e. at low speeds the magnetization can be maintained at the
proper level, and the torque can be controlled to adjust the speed. In comparison with the FOC and V/Hz speed control
techniques, the DTC technique has good dynamic performance but shows quite poor performance in steady-