Mitigation of torque oscillations caused by dc injection-based resistance estimation through resonant controllers

Stator on-line resistance estimation is often used, among others techniques, for thermal monitoring, flux and torque estimation in induction motor high performance drives. Dc current injection methods are some of the most well succeeded techniques found in literature for this purpose. In spite of this, the dc component added gives rise to oscillation in the electromagnetic torque, which can distur...