Three-Phase Inverter with Direct Torque Control for a Brushless DC Motor

This paper presents the implementation of a three-leg voltage source inverter fed by brushless DC motor. The open-loop speed control with direct torque is employed in this rotation motor controlled using an optimal vector which related to calculation stator flux and electromechanical torque. experimental results show that system has greater capability reduce spike ripple on voltage, current, flux, than conventional controller feeds from hall-effect sensors.